1.20.6 RB 2

https://forums.minecraftforge.net/topic/154389-forge-502-minecraft-1206/

.gitattributes

@@ -3,7 +3,6 @@
 *.patch text eol=lf
 *.java text eol=lf
 *.gradle text eol=crlf
-**/MANIFEST.MF text eol=crlf
 *.png binary
 *.gif binary
 *.exe binary

.gitignore

@@ -26,6 +26,7 @@
 /projects/mcp/
 /projects/clean/
 /projects/forge/
+#/patches/*
 
 #occupational hazards
 /projects/**/build/
@@ -34,15 +35,20 @@
 /projects/**/*.launch
 /repo/
 src/*/generated/**/.cache/
-
 # Generated by gradle every import
 **/src/main/resources/META-INF/MANIFEST.MF
 /fmlloader/src/main/resources/forge_version.json
 
+#Patch rejects
+#/patches-/
+#*.patch.rej
+#/projects/*/rejects/
+
+# FML changelog
+changelog.txt
+*.py
+*.7z
+/logs/
+
 /ForgeRoot.ipr
 /ForgeRoot.iws
-
-# APT stuff
-/*/.gitignore
-/*/.factorypath
-/*/.apt_generated/

build.gradle

@@ -4,7 +4,7 @@ import net.minecraftforge.gradleutils.PomUtils
 plugins {
     id 'net.minecraftforge.licenser' version '1.0.1'
     id 'com.github.ben-manes.versions' version '0.46.0'
-    id 'net.minecraftforge.gradleutils' version '[2.6.4,2.7)'
+    id 'net.minecraftforge.gradleutils' version '[2.3.0,2.4.0)'
     id 'eclipse'
     id 'de.undercouch.download' version '5.4.0'
     id 'net.minecraftforge.gradle.patcher' version '[6.0.22,6.2)' apply false
@@ -16,7 +16,8 @@ plugins {
 Util.init() //Init all our extension methods!
 
 ext {
-    VERSION = gitversion.getMCTagOffsetBranch(MC_VERSION)
+    GIT_INFO = gradleutils.gitInfo
+    VERSION = gradleutils.getFilteredMCTagOffsetBranchVersion(true, '[0-9]', MC_VERSION)
     FORGE_VERSION = VERSION.substring(MC_VERSION.length() + 1)
 }
 

buildSrc/build.gradle

@@ -4,10 +4,10 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.ow2.asm:asm:9.8'
-    implementation 'org.ow2.asm:asm-tree:9.8'
+    implementation 'org.ow2.asm:asm:9.7'
+    implementation 'org.ow2.asm:asm-tree:9.7'
     implementation 'net.minecraftforge:srgutils:0.5.10'
     implementation 'commons-io:commons-io:2.13.0'
     implementation 'com.google.code.gson:gson:2.10.1'
-    implementation 'org.eclipse.jgit:org.eclipse.jgit:6.7.0.202309050840-r'
+    implementation 'org.eclipse.jgit:org.eclipse.jgit:6.5.0.202303070854-r'
 }

buildSrc/src/main/groovy/net/minecraftforge/forge/tasks/BytecodePredicateFinder.groovy

@@ -3,7 +3,6 @@ package net.minecraftforge.forge.tasks
 import groovy.transform.CompileStatic
 import org.gradle.api.provider.Property
 import org.gradle.api.tasks.Internal
-import org.objectweb.asm.Opcodes
 import org.objectweb.asm.tree.ClassNode
 import org.objectweb.asm.tree.MethodNode
 
@@ -13,19 +12,13 @@ abstract class BytecodePredicateFinder extends BytecodeFinder {
     @Internal
     abstract Property<Closure<Boolean>> getPredicate()
 
-    private final Map<String, List<String>> matches = new TreeMap<>(Comparator.naturalOrder())
+    private final Set<String> matches = new HashSet<>()
 
     @Override
     protected process(ClassNode parent, MethodNode node) {
         for (final current : node.instructions) {
             if (predicate.get().call(parent, node, current)) {
-                var methods = matches.compute(parent.name, { k, v -> v ?: new ArrayList<>() })
-
-                // only add non-synthetic methods
-                if ((node.access & Opcodes.ACC_SYNTHETIC) == 0) {
-                    methods.add(node.name + node.desc)
-                }
-
+                matches.add(parent.name)
                 return
             }
         }
@@ -34,15 +27,6 @@ abstract class BytecodePredicateFinder extends BytecodeFinder {
     @Internal
     @Override
     protected Object getData() {
-        var array = new ArrayList<Object>()
-        matches.forEach { c, m ->
-            {
-                array.add(
-                        'class': c,
-                        'methods': m
-                )
-            }
-        }
-        return array ?: { throw new RuntimeException('Failed to find any targets, please ensure that method names and descriptors are correct.') }()
+        return matches.toSorted(Comparator.<String>naturalOrder()) ?: {throw new RuntimeException('Failed to find any targets, please ensure that method names and descriptors are correct.')}()
     }
 }

build_forge.gradle

@@ -47,7 +47,6 @@ jarSigner.autoDetect('forge')
 applyPatches {
     level 'WARNING'
     failOnError = UPDATING != 'true'
-    rejects = rootProject.layout.projectDirectory.dir('rejects').asFile
 }
 
 sourceSets {
@@ -71,7 +70,7 @@ sourceSets {
     }
 }
 
-final String SPEC_VERSION = gitversion.info.tag
+final String SPEC_VERSION = gradleutils.gitInfo.tag
 
 // The new versioning sceme is <MCVersion>-<ForgeMC>.<RB>.<CommitsSinceRB>
 // ForgeMC is a unique identifier for every MC version we have supported.
@@ -92,18 +91,18 @@ final String MAVEN_PATH = ext.MAVEN_PATH
 final String BINPATCH_TOOL = 'net.minecraftforge:binarypatcher:1.2.0:fatjar'
 final String INSTALLER_TOOLS = 'net.minecraftforge:installertools:1.4.3'
 final String FART = 'net.minecraftforge:ForgeAutoRenamingTool:1.0.6'
-final String S2S_TOOL = 'net.minecraftforge:Srg2Source:8.1.1:fatjar'
+final String S2S_TOOL = 'net.minecraftforge:Srg2Source:8.1.0:fatjar'
 
 configurations {
     // Don't pull all libraries, if we're missing something, add it to the installer list so the installer knows to download it.
     bootstrap  { transitive = false }
-    installer {
+    installer { 
         extendsFrom(bootstrap)
-        transitive = false
+        transitive = false 
     }
-    installerextra {
+    installerextra { 
         extendsFrom(bootstrap)
-        transitive = false
+        transitive = false 
     }
     api.extendsFrom(installer)
 }
@@ -117,14 +116,14 @@ dependencies {
     bootstrap(libs.securemodules) // Has Union file system in it
     bootstrap(libs.unsafe)        // Needed by securemodules
     bootstrap(libs.bundles.asm)   // Needed by securemodules
-
+    
     implementation(libs.jopt.simple)
-
+    
     installer(libs.bootstrap)
     installer(libs.bootstrap.api) // Needed by securemodules
     installer(libs.accesstransformers)
     installer(libs.eventbus)
-    installer(libs.jspecify) // Dep of EventBus
+    installer(libs.typetools) // Dep of EventBus
     installer(libs.forgespi)
     installer(libs.coremods)
     installer(libs.nashorn) // Dep of Coremods
@@ -142,14 +141,11 @@ dependencies {
     installer(project(':javafmllanguage'))
     installer(project(':lowcodelanguage'))
     installer(project(':mclanguage'))
-    installer(project(':forge-transformers'))
 
     installerextra("${MCP_ARTIFACT.group}:${MCP_ARTIFACT.name}:${MCP_ARTIFACT.version}:srg2off")
 
     runtimeOnly(libs.bootstrap)
     runtimeOnly(libs.bootstrap.dev)
-
-    annotationProcessor(libs.eventbus.validator)
 }
 
 tasks.named('extractRangeMap').configure {
@@ -169,7 +165,7 @@ patcher {
 
     runs {
         forge_client {
-            property 'eventbus.api.strictRuntimeChecks', 'true'
+            property 'eventbus.checkTypesOnDispatch', 'true'
             property 'org.lwjgl.system.SharedLibraryExtractDirectory', 'lwjgl_dll'
 
             args '--launchTarget', 'forge_dev_client',
@@ -198,7 +194,6 @@ patcher {
 
         forge_server_gametest {
             args '--launchTarget', 'forge_dev_server_gametest'
-            args '--uniqueWorld' // Unique world is used so that the world regenerates, as well as the world config isn't influenced by other runs
         }
 
         forge_server_gametest_test {
@@ -212,6 +207,7 @@ patcher {
                  '--all',
                  '--validate',
                  '--output', rootProject.file('src/main/generated/'),
+                 '--validate',
                  '--existing', sourceSets.main.resources.srcDirs[0],
                  '--assetsDir', downloadAssets.output,
                  '--assetIndex', "{asset_index}"
@@ -229,30 +225,6 @@ patcher {
                  '--assetsDir', downloadAssets.output,
                  '--assetIndex', "{asset_index}"
         }
-
-        forge_client_data {
-            args '--launchTarget', 'forge_dev_client_data',
-                 '--mod', 'forge',
-                 '--all',
-                 '--output', rootProject.file('src/main/generated/'),
-                 '--existing', sourceSets.main.resources.srcDirs[0],
-                 '--assetsDir', downloadAssets.output,
-                 '--assetIndex', "{asset_index}"
-        }
-
-        forge_client_data_test {
-            source sourceSets.test
-            args '--launchTarget', 'forge_dev',
-                 '--launchEntry', 'minecraft/net.minecraft.client.data.Main',
-                 '--launchData',
-                 '--mod', '.+',
-                 '--all',
-                 '--output', rootProject.file('src/test/generated/'),
-                 '--existing', sourceSets.main.resources.srcDirs[0],
-                 '--existing', sourceSets.test.resources.srcDirs[0],
-                 '--assetsDir', downloadAssets.output,
-                 '--assetIndex', "{asset_index}"
-        }
     }
 }
 
@@ -294,11 +266,11 @@ tasks.register('downloadCrowdin', Download) {
 tasks.userdevConfig.configure {
     configurations.installer.allDependencies.forEach {
         def dep = it.toString()
-        if (it instanceof ProjectDependency)
+        if (it instanceof ProjectDependency) 
             dep = "net.minecraftforge:$it.dependencyProject.name:$it.dependencyProject.version"
         libraries.add(dep)
     }
-
+    
     inject = '' // We don't have a userdev sourceset anymore. Empty as a gradle workaround...
     runs {
         client {
@@ -310,13 +282,6 @@ tasks.userdevConfig.configure {
             args '--assetsDir', '{assets_root}'
         }
 
-        clientData {
-            environment 'MCP_MAPPINGS', '{mcp_mappings}'
-            args '--launchTarget', "forge_userdev_client_data"
-            args '--assetIndex', '{asset_index}'
-            args '--assetsDir', '{assets_root}'
-        }
-
         server {
             environment 'MCP_MAPPINGS', '{mcp_mappings}'
             property 'forge.enableGameTest', 'true'
@@ -414,14 +379,14 @@ tasks.register('extractInheritance', ExtractInheritance) {
     }
 }
 tasks.register("findFinalizeSpawnTargets", BytecodePredicateFinder) {
-    jar = createClientOfficial.output
-    output = rootProject.file('forge-transformers/src/main/resources/coremods/finalize_spawn_targets.json')
+    jar = createJoinedSRG.output
+    output = rootProject.file('src/main/resources/coremods/finalize_spawn_targets.json')
     predicate = {
         parent, node, insn ->
             return 'net/minecraft/world/level/BaseSpawner' != parent.name // Ignore this class as we special case it.
             && insn.getOpcode().equals(Opcodes.INVOKEVIRTUAL)
-            && insn.name == 'finalizeSpawn'
-            && insn.desc == '(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;';
+            && insn.name == 'm_6518_'
+            && insn.desc == '(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/MobSpawnType;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;';
     }
 }
 tasks.register('validateDeprecations', ValidateDeprecations) {
@@ -439,6 +404,16 @@ tasks.register("downloadServerShim", DownloadMavenArtifact) {
     artifact = libs.bootstrap.shim.get().toString()
     changing = true
 }
+tasks.register("downloadMCPConfig", DownloadMavenArtifact) {
+    artifact = MCP_ARTIFACT
+}
+tasks.register('extractMCPConfigMappings', net.minecraftforge.gradle.common.tasks.JarExec) {
+    ext.output = file('build/mcp_mappings.tsrg')
+    tool = INSTALLER_TOOLS + ':fatjar'
+    args = ['--task', 'MCP_DATA', '--key', 'mappings', '--input', downloadMCPConfig.output.get().asFile.absolutePath, '--output', output.absolutePath]
+    outputs.file(output)
+    inputs.file(downloadMCPConfig.output)
+}
 tasks.register('downloadClientMappings', net.minecraftforge.gradle.common.tasks.JarExec) {
     ext.output = file('build/client_mappings.tsrg')
     tool = INSTALLER_TOOLS + ':fatjar'
@@ -526,7 +501,7 @@ tasks.register('serverShimJar', Jar) {
         from {
             zipTree(downloadServerShim.output).find { it.name == 'MANIFEST.MF' }
         }
-
+        
         attributes('Class-Path': configurations.bootstrap.resolvedConfiguration.resolvedArtifacts.collect { "libraries/${Util.getMavenInfoFromDep(it).path}" }.join(' '))
     }
     archiveClassifier = 'shim'
@@ -619,7 +594,7 @@ tasks.register('checkJarCompatibility', CheckJarCompatibility) {
     baseLibraries.from(project.tasks.named('createJoinedSRG').flatMap { it.output })
 
     inputJar = project.tasks.named('reobfJar').flatMap { it.output }
-
+    
     commonLibraries.from(project.configurations.minecraftImplementation)
     commonLibraries.from(project.configurations.installer)
 }
@@ -640,11 +615,14 @@ tasks.register('launcherJson', LauncherJson).configure {
 
 tasks.register('installerJson', InstallerJson) {
     icon = rootProject.file('icon.ico')
-
+    
     // Json to install into the client's launcher
     dependsOn(launcherJson)
     input.from(launcherJson.output)
-
+    
+    // Extract MCP Mappings
+    dependsOn(extractMCPConfigMappings)
+    input.from(extractMCPConfigMappings.output)
     // Download Official Mappings
     dependsOn(downloadClientMappings, downloadServerMappings)
     input.from(downloadClientMappings.output, downloadServerMappings.output)
@@ -671,6 +649,14 @@ tasks.register('installerJson', InstallerJson) {
             minecraft: MC_VERSION,
             serverJarPath: '{LIBRARY_DIR}/net/minecraft/server/{MINECRAFT_VERSION}/server-{MINECRAFT_VERSION}-bundled.jar',
             data: [
+                MAPPINGS: [
+                    client: "[${MCP_ARTIFACT.group}:${MCP_ARTIFACT.name}:${MCP_ARTIFACT.version}:mappings@tsrg]",
+                    server: "[${MCP_ARTIFACT.group}:${MCP_ARTIFACT.name}:${MCP_ARTIFACT.version}:mappings@tsrg]"
+                ],
+                MAPPINGS_SHA: [
+                    client: "'${extractMCPConfigMappings.output.sha1}'",
+                    server: "'${extractMCPConfigMappings.output.sha1}'"
+                ],
                 MOJMAPS: [
                     client: "[net.minecraft:client:${MC_VERSION}:mappings@tsrg]",
                     server: "[net.minecraft:server:${MC_VERSION}:mappings@tsrg]"
@@ -760,6 +746,18 @@ tasks.register('installerJson', InstallerJson) {
                     outputs: [
                         '{MC_UNPACKED}': '{MC_UNPACKED_SHA}'
                     ]
+                ], [
+                    jar: INSTALLER_TOOLS,
+                    classpath: INSTALLER_TOOLS_CLASSPATH,
+                    args: [
+                        '--task', 'MCP_DATA',
+                        '--input', "[${MCP_ARTIFACT.descriptor}]",
+                        '--output', '{MAPPINGS}',
+                        '--key', 'mappings'
+                    ],
+                    outputs: [
+                        '{MAPPINGS}': '{MAPPINGS_SHA}'
+                    ]
                 ], [
                     jar: INSTALLER_TOOLS,
                     classpath: INSTALLER_TOOLS_CLASSPATH,
@@ -850,9 +848,6 @@ tasks.named('universalJar').configure {
     exclude '.cache'
 
     manifest {
-        attributes([
-            'Automatic-Module-Name': 'net.minecraftforge.forge'
-        ] as LinkedHashMap)
         attributes([
             'Specification-Title':   'Forge',
             'Specification-Vendor':  'Forge Development LLC',
@@ -956,9 +951,6 @@ tasks.register('mdkZip', Zip) {
         rename 'gitignore\\.txt', '.gitignore'
         rename 'gitattributes\\.txt', '.gitattributes'
     }
-    from(rootProject.file('src/test/java/com/example/examplemod/')) {
-        into('src/main/java/com/example/examplemod/')
-    }
     from(rootProject.file('src/test/generated/mdk_datagen/')) {
         into('src/main/resources/')
         exclude '**/.cache/'
@@ -998,7 +990,7 @@ if (project.hasProperty('UPDATE_MAPPINGS')) {
 
 tasks.named('javadoc', Javadoc).configure {
     description 'Generates the combined javadocs for the FML projects and the main Forge project'
-    var includedProjects = [ ':fmlcore', ':fmlloader', ':javafmllanguage', ':mclanguage', ':forge-transformers' ]
+    var includedProjects = [ ':fmlcore', ':fmlloader', ':javafmllanguage', ':mclanguage' ]
     source includedProjects.collect { project(it).sourceSets.main.allJava }
     classpath = classpath + files(includedProjects.collect { project(it).sourceSets.main.compileClasspath })
 
@@ -1092,7 +1084,7 @@ publishing {
             license gradleutils.pom.Licenses.LGPLv2_1
         }
     }
-
+    
     repositories {
         maven gradleutils.publishingForgeMaven
     }

build_shared.gradle

@@ -44,7 +44,6 @@ tasks.withType(JavaCompile).configureEach {
     dependsOn 'processResources' // Needed because we merge the output of this with the output of the compile task. And gradle detects downstream tasks using the output without a hard dep
     options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
     options.warnings = false // Shutup deprecated for removal warnings
-    options.forkOptions.jvmArgs += '-Xmx6G' // Needed to make compiling faster, and not run out of heap space in some cases.
 }
 
 // Merge the resources and classes into the same directory. We'll need to split them at runtime because

docs/README.md

@@ -2,8 +2,8 @@
 
 MinecraftForge
 =============
-[![Stable Release](https://img.shields.io/badge/dynamic/json?url=https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json&label=Stable&prefix=1.21.8-&query=$.promos["1.21.8-recommended"]&color=brightgreen&logo=data:image/svg+xml;base64,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)][Download]
-[![Latest Release](https://img.shields.io/badge/dynamic/json?url=https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json&label=Latest&prefix=1.21.8-&query=$.promos["1.21.8-latest"]&color=blue&logo=data:image/svg+xml;base64,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
+[![Stable Release](https://img.shields.io/badge/dynamic/json?url=https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json&label=Stable&prefix=1.20.6-&query=$.promos["1.20.6-recommended"]&color=brightgreen&logo=data:image/svg+xml;base64,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)][Download]
+[![Latest Release](https://img.shields.io/badge/dynamic/json?url=https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json&label=Latest&prefix=1.20.6-&query=$.promos["1.20.6-latest"]&color=blue&logo=data:image/svg+xml;base64,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
 )][Download] [![Discord](https://img.shields.io/discord/313125603924639766.svg?color=%237289da&label=Discord&logo=discord&logoColor=%237289da)][Discord] [![Support](https://img.shields.io/badge/Patreon-Support-orange.svg?logo=Patreon)][Patreon]
 
 Forge is a free, open-source modding API all of your favourite mods use!
@@ -70,11 +70,6 @@ Please ensure you have a valid email address associated with your GitHub account
  to use and modify. However, it costs money to run such a large project as this, so please consider 
  [becoming a patron][Patreon].*
 
-### Thanks
-[![YourKit](https://www.yourkit.com/images/yklogo.png)](https://www.yourkit.com/)
-
-YourKit for providing us accesss to their [YourKit Java Profiler] which helps identify bottlenecks and places for improvment.
-
 [Contributing]: ./CONTRIBUTING.md
 [CLA]: https://cla-assistant.io/MinecraftForge/MinecraftForge
 
@@ -98,4 +93,3 @@ YourKit for providing us accesss to their [YourKit Java Profiler] which helps id
 [Pull-Requests]: https://docs.minecraftforge.net/en/latest/forgedev/#making-changes-and-pull-requests
 
 [Patreon]: https://www.patreon.com/LexManos
-[YourKit Java Profiler]: https://www.yourkit.com/java/profiler/

fmlcore/build.gradle

@@ -10,10 +10,9 @@ plugins {
 apply from: rootProject.file('build_shared.gradle')
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
 
     api(libs.eventbus)
-    annotationProcessor(libs.eventbus.validator)
 
     implementation(project(':fmlloader'))
     implementation(libs.commons.io)

fmlcore/src/main/java/net/minecraftforge/fml/Bindings.java

@@ -5,7 +5,7 @@
 
 package net.minecraftforge.fml;
 
-import net.minecraftforge.eventbus.api.bus.BusGroup;
+import net.minecraftforge.eventbus.api.IEventBus;
 import net.minecraftforge.fml.config.IConfigEvent;
 import net.minecraftforge.fml.loading.FMLLoader;
 
@@ -29,7 +29,7 @@ public class Bindings {
     /**
      * @return A supplier of net.minecraftforge.common.MinecraftForge#EVENT_BUS
      */
-    public static Supplier<BusGroup> getForgeBus() {
+    public static Supplier<IEventBus> getForgeBus() {
         return PROVIDER.getForgeBusSupplier();
     }
 

fmlcore/src/main/java/net/minecraftforge/fml/DeferredWorkQueue.java

@@ -57,9 +57,7 @@ public class DeferredWorkQueue
         LOGGER.debug(LOADING, "Dispatching synchronous work for work queue {}: {} jobs", modLoadingStage, tasks.size());
         RuntimeException aggregate = new RuntimeException();
         Stopwatch timer = Stopwatch.createStarted();
-        for (TaskInfo t : tasks) {
-            makeRunnable(t, Runnable::run, aggregate);
-        }
+        tasks.forEach(t -> makeRunnable(t, Runnable::run, aggregate));
         timer.stop();
         if (aggregate.getSuppressed().length > 0) {
             LOGGER.fatal(
@@ -116,7 +114,7 @@ public class DeferredWorkQueue
         return future;
     }
 
-    private static final class TaskInfo {
+    private static class TaskInfo {
         private final ModContainer owner;
         private Runnable task;
         private CompletableFuture<?> future;

fmlcore/src/main/java/net/minecraftforge/fml/DistExecutor.java

@@ -25,18 +25,7 @@ import java.util.function.Supplier;
  * <li>When you want to call one thing on one side, another thing on the other and return a result {@link #safeRunForDist(Supplier, Supplier)}</li>
  * <li>When you want to run something on one side {@link #safeRunWhenOn(Dist, Supplier)}</li>
  * </ul>
- *
- * @deprecated Historically, this allowed for safe execution of code on the correct side by exploiting a low-level
- * detail in Java 8, but in newer versions a simple if check is enough.
- * <br>
- * For example:
- * <pre>{@code
- * if (FMLEnvironment.dist.isClient()) {
- *     // client code here
- * }
- * }</pre>
  */
-@Deprecated(since = "1.21.5", forRemoval = true)
 public final class DistExecutor
 {
     private static final Logger LOGGER = LogManager.getLogger();

fmlcore/src/main/java/net/minecraftforge/fml/IBindingsProvider.java

@@ -5,13 +5,13 @@
 
 package net.minecraftforge.fml;
 
-import net.minecraftforge.eventbus.api.bus.BusGroup;
+import net.minecraftforge.eventbus.api.IEventBus;
 import net.minecraftforge.fml.config.IConfigEvent;
 
 import java.util.function.Supplier;
 
 public interface IBindingsProvider {
-    Supplier<BusGroup> getForgeBusSupplier();
+    Supplier<IEventBus> getForgeBusSupplier();
     Supplier<I18NParser> getMessageParser();
     Supplier<IConfigEvent.ConfigConfig> getConfigConfiguration();
 }

fmlcore/src/main/java/net/minecraftforge/fml/IModLoadingState.java

@@ -5,6 +5,8 @@
 
 package net.minecraftforge.fml;
 
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.fml.loading.progress.ProgressMeter;
 
 import java.util.Optional;
@@ -59,27 +61,27 @@ public interface IModLoadingState {
     /**
      * Builds the transition task for this state with a blank pre-sync and post-sync task.
      *
+     * @param <T>              a type of event fired on the mod-specific event bus
      * @param syncExecutor     a synchronous executor
      * @param parallelExecutor a parallel executor
      * @param progressBar      a progress meter for tracking progress
      * @return a transition task for this state
      * @see #buildTransition(Executor, Executor, ProgressMeter, Function, Function)
      */
-    default Optional<CompletableFuture<Void>> buildTransition(
-        final Executor syncExecutor,
-        final Executor parallelExecutor,
-        final ProgressMeter progressBar
-    ) {
+    default <T extends Event & IModBusEvent>
+    Optional<CompletableFuture<Void>> buildTransition(final Executor syncExecutor,
+                                                      final Executor parallelExecutor,
+                                                      final ProgressMeter progressBar) {
         return buildTransition(syncExecutor, parallelExecutor, progressBar,
-            e -> CompletableFuture.completedFuture(null),
-            e -> CompletableFuture.completedFuture(null)
-        );
+                e -> CompletableFuture.runAsync(() -> {}, e),
+                e -> CompletableFuture.runAsync(() -> {}, e));
     }
 
     /**
      * Builds the transition task for this state. The pre-sync and post-sync task functions allow the transition builder
      * to run these tasks on the same executor as the actual event dispatch and pre/post hooks.
      *
+     * @param <T>              a type of event fired on the mod-specific event bus
      * @param syncExecutor     a synchronous executor
      * @param parallelExecutor a parallel executor
      * @param progressBar      a progress meter for tracking progress
@@ -87,6 +89,7 @@ public interface IModLoadingState {
      * @param postSyncTask     a function which returns a task to run after event post-dispatch hook
      * @return a transition task for this state
      */
+    <T extends Event & IModBusEvent>
     Optional<CompletableFuture<Void>> buildTransition(final Executor syncExecutor,
                                                       final Executor parallelExecutor,
                                                       final ProgressMeter progressBar,

fmlcore/src/main/java/net/minecraftforge/fml/IModStateTransition.java

@@ -5,9 +5,12 @@
 
 package net.minecraftforge.fml;
 
+import net.minecraftforge.eventbus.api.Event;
 import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.fml.loading.progress.ProgressMeter;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
 import java.util.function.BiFunction;
@@ -15,67 +18,103 @@ import java.util.function.Function;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
-import org.jetbrains.annotations.Nullable;
-
+@SuppressWarnings("unchecked")
 public interface IModStateTransition {
-    /** Magic value to allow me to optimize the futures list by ignoring the default value without making old methods nullable. */
-    BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> NULL_HOOK = (e, g) -> CompletableFuture.completedFuture(null);
-
     static IModStateTransition buildNoopTransition() {
-        return ModStateTransitionHelper.NOOP;
+        return new NoopTransition();
     }
 
-    default CompletableFuture<Void> build(
-        final String name,
-        final Executor syncExecutor,
-        final Executor parallelExecutor,
-        final ProgressMeter progressBar,
-        final Function<Executor, CompletableFuture<Void>> preSyncTask,
-        final Function<Executor, CompletableFuture<Void>> postSyncTask
-    ) {
-        return ModStateTransitionHelper.build(this, name, syncExecutor, parallelExecutor, progressBar, preSyncTask, postSyncTask);
+    default <T extends Event & IModBusEvent>
+    CompletableFuture<Void> build(final String name,
+                                  final Executor syncExecutor,
+                                  final Executor parallelExecutor,
+                                  final ProgressMeter progressBar,
+                                  final Function<Executor, CompletableFuture<Void>> preSyncTask,
+                                  final Function<Executor, CompletableFuture<Void>> postSyncTask) {
+        List<CompletableFuture<Void>> futures = new ArrayList<>();
+
+        this.eventFunctionStream().get()
+                .map(f -> (EventGenerator<T>) f)
+                .reduce((head, tail) -> addCompletableFutureTaskForModDispatch(syncExecutor, parallelExecutor, futures, progressBar, head, ModLoadingStage::currentState, tail))
+                .ifPresent(last -> addCompletableFutureTaskForModDispatch(syncExecutor, parallelExecutor, futures, progressBar, last, nextModLoadingStage(), null));
+
+        final CompletableFuture<Void> preSyncTaskCF = preSyncTask.apply(syncExecutor);
+        final CompletableFuture<Void> eventDispatchCF = ModList.gather(futures).thenCompose(ModList::completableFutureFromExceptionList);
+        final CompletableFuture<Void> postEventDispatchCF = preSyncTaskCF
+                .thenApplyAsync(n -> {
+                    progressBar.label(progressBar.name() + ": dispatching "+name);
+                    return null;
+                }, parallelExecutor)
+                .thenComposeAsync(n -> eventDispatchCF, parallelExecutor)
+                .thenApply(r -> {
+                    postSyncTask.apply(syncExecutor);
+                    return null;
+                });
+        return this.finalActivityGenerator().apply(syncExecutor, postEventDispatchCF);
     }
 
     default BiFunction<ModLoadingStage, Throwable, ModLoadingStage> nextModLoadingStage() {
         return ModLoadingStage::nextState;
     }
 
-    /**
-     * This used to allow you to fire multiple events during the transition. However, in doing so it would cause issues with the default
-     * ModContainer's event handlers causing issues such as mod classes being constructed multiple times.
-     */
-    @Deprecated(since = "1.21.3", forRemoval = true)
-    default Supplier<Stream<EventGenerator<?>>> eventFunctionStream() {
-        return () -> Stream.ofNullable(eventFunction());
-    }
-
-    @Nullable
-    default <T extends IModBusEvent> EventGenerator<T> eventFunction() {
-        return null;
+    private <T extends Event & IModBusEvent>
+    EventGenerator<T> addCompletableFutureTaskForModDispatch(final Executor syncExecutor,
+                                                             final Executor parallelExecutor,
+                                                             final List<CompletableFuture<Void>> completableFutures,
+                                                             final ProgressMeter progressBar,
+                                                             final EventGenerator<T> eventGenerator,
+                                                             final BiFunction<ModLoadingStage, Throwable, ModLoadingStage> nextState,
+                                                             final EventGenerator<T> nextGenerator) {
+        final Executor selectedExecutor = threadSelector().apply(syncExecutor, parallelExecutor);
+
+        var preDispatchHook = (BiFunction<Executor, EventGenerator<T>, CompletableFuture<Void>>) preDispatchHook();
+        completableFutures.add(preDispatchHook.apply(selectedExecutor, eventGenerator));
+
+        completableFutures.add(ModList.get().futureVisitor(eventGenerator, progressBar, nextState).apply(threadSelector().apply(syncExecutor, parallelExecutor)));
+
+        var postDispatchHook = (BiFunction<Executor, EventGenerator<T>, CompletableFuture<Void>>) postDispatchHook();
+        completableFutures.add(postDispatchHook.apply(selectedExecutor, eventGenerator));
+
+        return nextGenerator;
     }
 
+    Supplier<Stream<EventGenerator<?>>> eventFunctionStream();
     ThreadSelector threadSelector();
     BiFunction<Executor, CompletableFuture<Void>, CompletableFuture<Void>> finalActivityGenerator();
+    BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> preDispatchHook();
+    BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> postDispatchHook();
 
-    /**
-     * I think this was meant as a way to do some things for each mod container beforge/after the transition had been sent to the container.
-     * However, the Future returned by this was never linked to the main transition future in any way.  Which means that it was run
-     * in parallel and couldn't guarantee the state of the ModContainer.
-     * <p>
-     * Plus all existing code that I could find returned a completedFuture, so I don't think anyone ever used this.
-     * <p>
-     * If I were to add this back it would be a CompletableFuture wrap(ModContainer, CompletableFuture)
-     * <p>
-     * Added magic value NULL_HOOK to allow me to optimize the futures list by ignoring the default value without making this method nullable.
-     */
-    @Deprecated(since = "1.21.3", forRemoval = true)
-    default BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> preDispatchHook() { return NULL_HOOK; }
-    @Deprecated(since = "1.21.3", forRemoval = true)
-    default BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> postDispatchHook() { return NULL_HOOK; }
-
-    interface EventGenerator<T extends IModBusEvent> extends Function<ModContainer, T> {
-        static <FN extends IModBusEvent> EventGenerator<FN> fromFunction(Function<ModContainer, FN> fn) {
+    interface EventGenerator<T extends Event & IModBusEvent> extends Function<ModContainer, T> {
+        static <FN extends Event & IModBusEvent> EventGenerator<FN> fromFunction(Function<ModContainer, FN> fn) {
             return fn::apply;
         }
     }
+}
+
+record NoopTransition() implements IModStateTransition {
+
+    @Override
+    public Supplier<Stream<EventGenerator<?>>> eventFunctionStream() {
+        return Stream::of;
+    }
+
+    @Override
+    public ThreadSelector threadSelector() {
+        return ThreadSelector.SYNC;
+    }
+
+    @Override
+    public BiFunction<Executor, CompletableFuture<Void>, CompletableFuture<Void>> finalActivityGenerator() {
+        return (e, t) -> t.thenApplyAsync(Function.identity(), e);
+    }
+
+    @Override
+    public BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> preDispatchHook() {
+        return (t, f)-> CompletableFuture.completedFuture(null);
+    }
+
+    @Override
+    public BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> postDispatchHook() {
+        return (t, f)-> CompletableFuture.completedFuture(null);
+    }
 }

fmlcore/src/main/java/net/minecraftforge/fml/InterModComms.java

@@ -61,7 +61,7 @@ public class InterModComms
         }
     }
 
-    private static final ConcurrentMap<String, ConcurrentLinkedQueue<IMCMessage>> containerQueues = new ConcurrentHashMap<>();
+    private static ConcurrentMap<String, ConcurrentLinkedQueue<IMCMessage>> containerQueues = new ConcurrentHashMap<>();
 
     /**
      * Send IMC to remote. Sender will default to the active modcontainer, or minecraft if not.
@@ -115,14 +115,16 @@ public class InterModComms
         return getMessages(modId, s->Boolean.TRUE);
     }
 
-    private record QueueFilteringSpliterator(
-            ConcurrentLinkedQueue<IMCMessage> queue,
-            Predicate<String> methodFilter,
-            Iterator<IMCMessage> iterator
-    ) implements Spliterator<IMCMessage> {
+    private static class QueueFilteringSpliterator implements Spliterator<IMCMessage>
+    {
+        private final ConcurrentLinkedQueue<IMCMessage> queue;
+        private final Predicate<String> methodFilter;
+        private final Iterator<IMCMessage> iterator;
 
         public QueueFilteringSpliterator(final ConcurrentLinkedQueue<IMCMessage> queue, final Predicate<String> methodFilter) {
-            this(queue, methodFilter, queue.iterator());
+            this.queue = queue;
+            this.iterator = queue.iterator();
+            this.methodFilter = methodFilter;
         }
 
         @Override

fmlcore/src/main/java/net/minecraftforge/fml/ModContainer.java

@@ -5,18 +5,22 @@
 
 package net.minecraftforge.fml;
 
+import net.minecraftforge.eventbus.api.Event;
 import net.minecraftforge.fml.config.IConfigEvent;
 import net.minecraftforge.fml.config.ModConfig;
 import net.minecraftforge.fml.event.IModBusEvent;
+import net.minecraftforge.fml.loading.progress.ProgressMeter;
 import net.minecraftforge.forgespi.language.IModInfo;
 
 import java.util.EnumMap;
-import java.util.HashSet;
+import java.util.HashMap;
 import java.util.IdentityHashMap;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
-import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.function.BiFunction;
 import java.util.function.BiPredicate;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
@@ -29,24 +33,26 @@ import java.util.function.Supplier;
  * a mechanism by which we can wrap actual mod code so that the loader and other
  * facilities can treat mods at arms length.
  * </p>
+ *
+ * @author cpw
+ *
  */
-public abstract class ModContainer {
+
+public abstract class ModContainer
+{
     protected final String modId;
     protected final String namespace;
     protected final IModInfo modInfo;
     protected ModLoadingStage modLoadingStage;
     protected Supplier<?> contextExtension;
-    protected final Map<ModLoadingStage, Runnable> activityMap = new EnumMap<>(ModLoadingStage.class);
+    protected final Map<ModLoadingStage, Runnable> activityMap = new HashMap<>();
     protected final Map<Class<? extends IExtensionPoint<?>>, Supplier<?>> extensionPoints = new IdentityHashMap<>();
     protected final EnumMap<ModConfig.Type, ModConfig> configs = new EnumMap<>(ModConfig.Type.class);
-    final Set<ModContainer> dependencies = new HashSet<>();
-    /**
-     * If you want to handle the event, override {@link #dispatchConfigEvent(IConfigEvent)}
-     */
-    @Deprecated(since = "1.21.3", forRemoval = true)
+    @SuppressWarnings("OptionalUsedAsFieldOrParameterType")
     protected Optional<Consumer<IConfigEvent>> configHandler = Optional.empty();
 
-    public ModContainer(IModInfo info) {
+    public ModContainer(IModInfo info)
+    {
         this.modId = info.getModId();
         // TODO: Currently not reading namespace from configuration..
         this.namespace = this.modId;
@@ -76,35 +82,58 @@ public abstract class ModContainer {
     /**
      * Errored container state, used for filtering. Does nothing.
      */
-    ModContainer() {
+    ModContainer()
+    {
         this.modLoadingStage = ModLoadingStage.ERROR;
         modId = "BROKEN";
         namespace = "BROKEN";
         modInfo = null;
     }
-
     /**
      * @return the modid for this mod
      */
-    public final String getModId() {
+    public final String getModId()
+    {
         return modId;
     }
 
     /**
      * @return the resource prefix for the mod
      */
-    public final String getNamespace() {
+    public final String getNamespace()
+    {
         return namespace;
     }
 
     /**
      * @return The current loading stage for this mod
      */
-    public ModLoadingStage getCurrentState() {
+    public ModLoadingStage getCurrentState()
+    {
         return modLoadingStage;
     }
 
-    public IModInfo getModInfo() {
+    public static <T extends Event & IModBusEvent> CompletableFuture<Void> buildTransitionHandler(
+            final ModContainer target,
+            final IModStateTransition.EventGenerator<T> eventGenerator,
+            final ProgressMeter progressBar,
+            final BiFunction<ModLoadingStage, Throwable, ModLoadingStage> stateChangeHandler,
+            final Executor executor) {
+        return CompletableFuture
+                .runAsync(() -> {
+                    ModLoadingContext.get().setActiveContainer(target);
+                    target.activityMap.getOrDefault(target.modLoadingStage, ()->{}).run();
+                    target.acceptEvent(eventGenerator.apply(target));
+                }, executor)
+                .whenComplete((mc, exception) -> {
+                    target.modLoadingStage = stateChangeHandler.apply(target.modLoadingStage, exception);
+                    progressBar.increment();
+                    ModLoadingContext.get().setActiveContainer(null);
+                });
+    }
+
+    public IModInfo getModInfo()
+    {
         return modInfo;
     }
 
@@ -113,7 +142,8 @@ public abstract class ModContainer {
         return Optional.ofNullable((T)extensionPoints.getOrDefault(point,()-> null).get());
     }
 
-    public <T extends Record & IExtensionPoint<T>> void registerExtensionPoint(Class<? extends IExtensionPoint<T>> point, Supplier<T> extension) {
+    public <T extends Record & IExtensionPoint<T>> void registerExtensionPoint(Class<? extends IExtensionPoint<T>> point, Supplier<T> extension)
+    {
         extensionPoints.put(point, extension);
     }
 
@@ -138,10 +168,7 @@ public abstract class ModContainer {
     }
 
     public void dispatchConfigEvent(IConfigEvent event) {
-        var handler = configHandler.orElse(null);
-        if (handler != null) {
-            handler.accept(event);
-        }
+        configHandler.ifPresent(configHandler->configHandler.accept(event));
     }
 
     /**
@@ -161,5 +188,5 @@ public abstract class ModContainer {
      * Accept an arbitrary event for processing by the mod. Probably posted to an event bus in the lower level container.
      * @param e Event to accept
      */
-    protected <T extends IModBusEvent> void acceptEvent(T e) {}
+    protected <T extends Event & IModBusEvent> void acceptEvent(T e) {}
 }

fmlcore/src/main/java/net/minecraftforge/fml/ModList.java

@@ -5,6 +5,9 @@
 
 package net.minecraftforge.fml;
 
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.fml.event.IModBusEvent;
+import net.minecraftforge.fml.loading.progress.ProgressMeter;
 import net.minecraftforge.forgespi.language.IModFileInfo;
 import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.forgespi.language.ModFileScanData;
@@ -12,15 +15,27 @@ import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.fml.loading.moddiscovery.ModFileInfo;
 import net.minecraftforge.fml.loading.moddiscovery.ModInfo;
 import net.minecraftforge.forgespi.locating.IModFile;
-import java.util.Collections;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
 import java.util.Comparator;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+import java.util.concurrent.ForkJoinPool;
+import java.util.concurrent.ForkJoinWorkerThread;
 import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
@@ -30,25 +45,27 @@ import java.util.stream.Stream;
  * Master list of all mods - game-side version. This is classloaded in the game scope and
  * can dispatch game level events as a result.
  */
-public class ModList {
+public class ModList
+{
+    //private static final Logger LOGGER = LogManager.getLogger();
     private static ModList INSTANCE;
     private final List<IModFileInfo> modFiles;
     private final List<IModInfo> sortedList;
-    private final Map<String, IModFileInfo> fileById;
+    private final Map<String, ModFileInfo> fileById;
     private List<ModContainer> mods;
     private Map<String, ModContainer> indexedMods;
     private List<ModFileScanData> modFileScanData;
     private List<ModContainer> sortedContainers;
 
-    private ModList(final List<ModFile> modFiles, final List<ModInfo> sortedList) {
-        this.modFiles = modFiles.stream().map(ModFile::getModFileInfo).toList();
-        this.sortedList = sortedList.stream().map(IModInfo.class::cast).toList();
-        var byId = new HashMap<String, IModFileInfo>();
-        for (var file : this.modFiles) {
-            for (var mod : file.getMods())
-                byId.put(mod.getModId(), mod.getOwningFile());
-        }
-        this.fileById = Collections.unmodifiableMap(byId);
+    private ModList(final List<ModFile> modFiles, final List<ModInfo> sortedList)
+    {
+        this.modFiles = modFiles.stream().map(ModFile::getModFileInfo).map(ModFileInfo.class::cast).collect(Collectors.toList());
+        this.sortedList = sortedList.stream().
+                map(ModInfo.class::cast).
+                collect(Collectors.toList());
+        this.fileById = this.modFiles.stream().map(IModFileInfo::getMods).flatMap(Collection::stream).
+                map(ModInfo.class::cast).
+                collect(Collectors.toMap(ModInfo::getModId, ModInfo::getOwningFile));
         CrashReportCallables.registerCrashCallable("Mod List", this::crashReport);
     }
 
@@ -57,20 +74,19 @@ public class ModList {
     }
 
     private String fileToLine(IModFile mf) {
-        var mainMod = mf.getModInfos().getFirst();
         return String.format(Locale.ENGLISH, "%-50.50s|%-30.30s|%-30.30s|%-20.20s|%-10.10s|Manifest: %s", mf.getFileName(),
-                mainMod.getDisplayName(),
-                mainMod.getModId(),
-                mainMod.getVersion(),
-                getModContainerState(mainMod.getModId()),
+                mf.getModInfos().get(0).getDisplayName(),
+                mf.getModInfos().get(0).getModId(),
+                mf.getModInfos().get(0).getVersion(),
+                getModContainerState(mf.getModInfos().get(0).getModId()),
                 ((ModFileInfo)mf.getModFileInfo()).getCodeSigningFingerprint().orElse("NOSIGNATURE"));
     }
-
     private String crashReport() {
         return "\n"+applyForEachModFile(this::fileToLine).collect(Collectors.joining("\n\t\t", "\t\t", ""));
     }
 
-    public static ModList of(List<ModFile> modFiles, List<ModInfo> sortedList) {
+    public static ModList of(List<ModFile> modFiles, List<ModInfo> sortedList)
+    {
         INSTANCE = new ModList(modFiles, sortedList);
         return INSTANCE;
     }
@@ -79,47 +95,109 @@ public class ModList {
         return INSTANCE;
     }
 
-    public List<IModFileInfo> getModFiles() {
+    private static ForkJoinWorkerThread newForkJoinWorkerThread(ForkJoinPool pool) {
+        ForkJoinWorkerThread thread = ForkJoinPool.defaultForkJoinWorkerThreadFactory.newThread(pool);
+        thread.setName("modloading-worker-" + thread.getPoolIndex());
+        // The default sets it to the SystemClassloader, so copy the current one.
+        thread.setContextClassLoader(Thread.currentThread().getContextClassLoader());
+        return thread;
+    }
+
+    public List<IModFileInfo> getModFiles()
+    {
         return modFiles;
     }
 
-    public IModFileInfo getModFileById(String modid) {
+    public IModFileInfo getModFileById(String modid)
+    {
         return this.fileById.get(modid);
     }
 
-    void setLoadedMods(final List<ModContainer> modContainers) {
+    <T extends Event & IModBusEvent> Function<Executor, CompletableFuture<Void>> futureVisitor(
+            final IModStateTransition.EventGenerator<T> eventGenerator,
+            final ProgressMeter progressBar,
+            final BiFunction<ModLoadingStage, Throwable, ModLoadingStage> stateChange) {
+        return executor -> gather(
+                this.mods.stream()
+                .map(mod -> ModContainer.buildTransitionHandler(mod, eventGenerator, progressBar, stateChange, executor))
+                .toList()
+        ).thenComposeAsync(ModList::completableFutureFromExceptionList, executor);
+    }
+    static CompletionStage<Void> completableFutureFromExceptionList(List<? extends Map.Entry<?, Throwable>> t) {
+        if (t.stream().noneMatch(e->e.getValue()!=null)) {
+            return CompletableFuture.completedFuture(null);
+        } else {
+            final List<Throwable> throwables = t.stream().filter(e -> e.getValue() != null).map(Map.Entry::getValue).toList();
+            CompletableFuture<Void> cf = new CompletableFuture<>();
+            final RuntimeException accumulator = new RuntimeException();
+            cf.completeExceptionally(accumulator);
+            throwables.forEach(exception -> {
+                if (exception instanceof CompletionException) {
+                    exception = exception.getCause();
+                }
+                if (exception.getSuppressed().length!=0) {
+                    Arrays.stream(exception.getSuppressed()).forEach(accumulator::addSuppressed);
+                } else {
+                    accumulator.addSuppressed(exception);
+                }
+            });
+            return cf;
+        }
+    }
+
+    static <V> CompletableFuture<List<Map.Entry<V, Throwable>>> gather(List<? extends CompletableFuture<? extends V>> futures) {
+        List<Map.Entry<V, Throwable>> list = new ArrayList<>(futures.size());
+        CompletableFuture<?>[] results = new CompletableFuture[futures.size()];
+        futures.forEach(future -> {
+            int i = list.size();
+            list.add(null);
+            results[i] = future.whenComplete((result, exception) -> list.set(i, new AbstractMap.SimpleImmutableEntry<>(result, exception)));
+        });
+        return CompletableFuture.allOf(results).handle((r, th)->null).thenApply(res -> list);
+    }
+
+    void setLoadedMods(final List<ModContainer> modContainers)
+    {
         this.mods = modContainers;
-        this.sortedContainers = modContainers.stream().sorted(Comparator.comparingInt(c -> sortedList.indexOf(c.getModInfo()))).toList();
+        this.sortedContainers = modContainers.stream().sorted(Comparator.comparingInt(c->sortedList.indexOf(c.getModInfo()))).toList();
         this.indexedMods = modContainers.stream().collect(Collectors.toMap(ModContainer::getModId, Function.identity()));
     }
 
     @SuppressWarnings("unchecked")
-    public <T> Optional<T> getModObjectById(String modId) {
+    public <T> Optional<T> getModObjectById(String modId)
+    {
         return getModContainerById(modId).map(ModContainer::getMod).map(o -> (T) o);
     }
 
-    public Optional<? extends ModContainer> getModContainerById(String modId) {
+    public Optional<? extends ModContainer> getModContainerById(String modId)
+    {
         return Optional.ofNullable(this.indexedMods.get(modId));
     }
 
-    public Optional<? extends ModContainer> getModContainerByObject(Object obj) {
+    public Optional<? extends ModContainer> getModContainerByObject(Object obj)
+    {
         return mods.stream().filter(mc -> mc.getMod() == obj).findFirst();
     }
 
-    public List<IModInfo> getMods() {
+    public List<IModInfo> getMods()
+    {
         return this.sortedList;
     }
 
-    public boolean isLoaded(String modTarget) {
+    public boolean isLoaded(String modTarget)
+    {
         return this.indexedMods.containsKey(modTarget);
     }
 
-    public int size() {
+    public int size()
+    {
         return mods.size();
     }
 
-    public List<ModFileScanData> getAllScanData() {
-        if (modFileScanData == null) {
+    public List<ModFileScanData> getAllScanData()
+    {
+        if (modFileScanData == null)
+        {
             modFileScanData = this.sortedList.stream().
                     map(IModInfo::getOwningFile).
                     filter(Objects::nonNull).
@@ -132,7 +210,8 @@ public class ModList {
 
     }
 
-    public void forEachModFile(Consumer<IModFile> fileConsumer) {
+    public void forEachModFile(Consumer<IModFile> fileConsumer)
+    {
         modFiles.stream().map(IModFileInfo::getFile).forEach(fileConsumer);
     }
 
@@ -148,11 +227,13 @@ public class ModList {
         this.sortedContainers.forEach(containerConsumer);
     }
 
-    public List<ModContainer> getLoadedMods() {
-        return this.sortedContainers;
-    }
-
     public <T> Stream<T> applyForEachModContainer(Function<ModContainer, T> function) {
         return indexedMods.values().stream().map(function);
     }
+
+    private static class UncaughtModLoadingException extends ModLoadingException {
+        public UncaughtModLoadingException(ModLoadingStage stage, Throwable originalException) {
+            super(null, stage, "fml.modloading.uncaughterror", originalException);
+        }
+    }
 }

fmlcore/src/main/java/net/minecraftforge/fml/ModLoader.java

@@ -6,6 +6,8 @@
 package net.minecraftforge.fml;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Streams;
+import net.minecraftforge.eventbus.api.Event;
 import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.fml.loading.FMLEnvironment;
 import net.minecraftforge.fml.loading.FMLLoader;
@@ -31,6 +33,8 @@ import java.util.function.BiConsumer;
 import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
 import static net.minecraftforge.fml.Logging.CORE;
 import static net.minecraftforge.fml.Logging.LOADING;
 
@@ -70,20 +74,24 @@ import static net.minecraftforge.fml.Logging.LOADING;
  *     and completes the mod loading sequence.</dd>
  * </dl>
  */
-public class ModLoader {
+public class ModLoader
+{
     private static final Logger LOGGER = LogManager.getLogger();
+    private static ModLoader INSTANCE;
     private final LoadingModList loadingModList;
 
     private final List<ModLoadingException> loadingExceptions;
-    private final Set<IModInfo> erroredModInfos;
     private final List<ModLoadingWarning> loadingWarnings;
     private final ModStateManager stateManager;
-    private static boolean loadingStateValid;
-    private final Consumer<String> statusConsumer = StartupNotificationManager.modLoaderConsumer().orElse(msg -> {});
+    private boolean loadingStateValid;
+    @SuppressWarnings("OptionalUsedAsFieldOrParameterType")
+    private final Optional<Consumer<String>> statusConsumer = StartupNotificationManager.modLoaderConsumer();
     private final Set<IModLoadingState> completedStates = new HashSet<>();
     private ModList modList;
 
-    private ModLoader() {
+    private ModLoader()
+    {
+        INSTANCE = this;
         this.loadingModList = FMLLoader.getLoadingModList();
         this.loadingExceptions = this.loadingModList.getErrors().stream()
                 .flatMap(ModLoadingException::fromEarlyException)
@@ -91,32 +99,24 @@ public class ModLoader {
         this.loadingWarnings = this.loadingModList.getBrokenFiles().stream()
                 .map(file -> new ModLoadingWarning(null, ModLoadingStage.VALIDATE, InvalidModIdentifier.identifyJarProblem(file.getFilePath()).orElse("fml.modloading.brokenfile"), file.getFileName()))
                 .collect(Collectors.toList());
-        if (this.loadingExceptions.isEmpty()) {
-            this.erroredModInfos = Collections.emptySet();
-        } else {
-            this.erroredModInfos = Collections.newSetFromMap(new IdentityHashMap<>());
-            this.erroredModInfos.addAll(this.loadingExceptions.stream().map(ModLoadingException::getModInfo).toList());
-        }
         this.loadingModList.getModFiles().stream()
                 .filter(ModFileInfo::missingLicense)
-                .filter(modFileInfo -> modFileInfo.getMods().stream().noneMatch(this.erroredModInfos::contains)) //Ignore files where any other mod already encountered an error
+                .filter(modFileInfo -> modFileInfo.getMods().stream().noneMatch(thisModInfo -> this.loadingExceptions.stream().map(ModLoadingException::getModInfo).anyMatch(otherInfo -> otherInfo == thisModInfo))) //Ignore files where any other mod already encountered an error
                 .map(modFileInfo -> new ModLoadingException(null, ModLoadingStage.VALIDATE, "fml.modloading.missinglicense", null, modFileInfo.getFile()))
                 .forEach(this.loadingExceptions::add);
         this.stateManager = new ModStateManager();
         CrashReportCallables.registerCrashCallable("ModLauncher", FMLLoader::getLauncherInfo);
         CrashReportCallables.registerCrashCallable("ModLauncher launch target", FMLLoader::launcherHandlerName);
         CrashReportCallables.registerCrashCallable("ModLauncher naming", FMLLoader::getNaming);
-        CrashReportCallables.registerCrashCallable("ModLauncher services", ModLoader::computeModLauncherServiceList);
-        CrashReportCallables.registerCrashCallable("FML Language Providers", ModLoader::computeLanguageList);
+        CrashReportCallables.registerCrashCallable("ModLauncher services", this::computeModLauncherServiceList);
+        CrashReportCallables.registerCrashCallable("FML Language Providers", this::computeLanguageList);
     }
 
-    private static String computeLanguageList() {
-        return "\n" + FMLLoader.getLanguageLoadingProvider()
-                .applyForEach(lp -> lp.name() + "@" + lp.getClass().getPackage().getImplementationVersion())
-                .collect(Collectors.joining("\n\t\t", "\t\t", ""));
+    private String computeLanguageList() {
+        return "\n"+FMLLoader.getLanguageLoadingProvider().applyForEach(lp->lp.name() +"@"+ lp.getClass().getPackage().getImplementationVersion()).collect(Collectors.joining("\n\t\t", "\t\t", ""));
     }
 
-    private static String computeModLauncherServiceList() {
+    private String computeModLauncherServiceList() {
         final List<Map<String, String>> mods = FMLLoader.modLauncherModList();
         return "\n"+mods.stream().map(mod->mod.getOrDefault("file","nofile")+
                 " "+mod.getOrDefault("name", "missing")+
@@ -125,13 +125,9 @@ public class ModLoader {
                 collect(Collectors.joining("\n\t\t","\t\t",""));
     }
 
-    public static ModLoader get() {
-        return LazyInit.INSTANCE;
-    }
-
-    private static final class LazyInit {
-        private static final ModLoader INSTANCE = new ModLoader();
-        private LazyInit() {}
+    public static ModLoader get()
+    {
+        return INSTANCE == null ? INSTANCE = new ModLoader() : INSTANCE;
     }
 
     /**
@@ -148,23 +144,21 @@ public class ModLoader {
         final ModList modList = ModList.of(loadingModList.getModFiles().stream().map(ModFileInfo::getFile).toList(),
                 loadingModList.getMods());
         if (!this.loadingExceptions.isEmpty()) {
-            LOGGER.fatal(CORE, "Error during pre-loading phase", loadingExceptions.getFirst());
-            statusConsumer.accept("ERROR DURING MOD LOADING");
+            LOGGER.fatal(CORE, "Error during pre-loading phase", loadingExceptions.get(0));
+            statusConsumer.ifPresent(c->c.accept("ERROR DURING MOD LOADING"));
             modList.setLoadedMods(Collections.emptyList());
             loadingStateValid = false;
             throw new LoadingFailedException(loadingExceptions);
         }
-        var failedBounds = new ArrayList<ForgeFeature.Bound>();
-        for (var mod : loadingModList.getMods()) {
-            for (var feature : mod.getForgeFeatures()) {
-                if (!ForgeFeature.testFeature(FMLEnvironment.dist, feature))
-                    failedBounds.add(feature);
-            }
-        }
+        List<? extends ForgeFeature.Bound> failedBounds = loadingModList.getMods().stream()
+                .map(ModInfo::getForgeFeatures)
+                .flatMap(Collection::stream)
+                .filter(bound -> !ForgeFeature.testFeature(FMLEnvironment.dist, bound))
+                .toList();
 
         if (!failedBounds.isEmpty()) {
             LOGGER.fatal(CORE, "Failed to validate feature bounds for mods: {}", failedBounds);
-            statusConsumer.accept("ERROR DURING MOD LOADING");
+            statusConsumer.ifPresent(c->c.accept("ERROR DURING MOD LOADING"));
             modList.setLoadedMods(Collections.emptyList());
             loadingStateValid = false;
             throw new LoadingFailedException(failedBounds.stream()
@@ -172,67 +166,38 @@ public class ModLoader {
                     .toList());
         }
 
-        final var modContainers = new HashMap<String, ModContainer>();
-        for (var file : loadingModList.getModFiles()) {
-            var containers = this.buildMods(file.getFile());
-            for (var container : containers)
-                modContainers.put(container.getModId(), container);
-        }
-
+        final List<ModContainer> modContainers = loadingModList.getModFiles().stream()
+                .map(ModFileInfo::getFile)
+                .map(this::buildMods)
+                .<ModContainer>mapMulti(Iterable::forEach)
+                .toList();
         if (!loadingExceptions.isEmpty()) {
-            LOGGER.fatal(CORE, "Failed to initialize mod containers", loadingExceptions.getFirst());
-            statusConsumer.accept("ERROR DURING MOD LOADING");
+            LOGGER.fatal(CORE, "Failed to initialize mod containers", loadingExceptions.get(0));
+            statusConsumer.ifPresent(c->c.accept("ERROR DURING MOD LOADING"));
             modList.setLoadedMods(Collections.emptyList());
             loadingStateValid = false;
             throw new LoadingFailedException(loadingExceptions);
         }
-
-        // Gather all dependencies, so we can make sure they have finished their transition events before we fire ours
-        for (var mod : modContainers.values()) {
-            for (var dep : mod.getModInfo().getDependencies()) {
-                var target = modContainers.get(dep.getModId());
-                if (target == null)
-                    continue;
-
-                switch (dep.getOrdering()) {
-                    case AFTER:
-                        mod.dependencies.add(target);
-                        break;
-                    case BEFORE:
-                        target.dependencies.add(mod);
-                        break;
-                    default:
-                        break;
-                }
-            }
-        }
-
-        modList.setLoadedMods(modContainers.values().stream().toList());
+        modList.setLoadedMods(modContainers);
         this.modList = modList;
         var stateList = stateManager.getStates(ModLoadingPhase.GATHER);
-        var progress = StartupMessageManager.addProgressBar("Mod Gather", stateList.stream().mapToInt(mls -> mls.size().applyAsInt(this.modList)).sum());
-        for (IModLoadingState mls : stateList) {
-            dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress);
-        }
+        var progress = StartupMessageManager.addProgressBar("Mod Gather", stateList.stream().mapToInt(mls -> mls.size().applyAsInt(modList)).sum());
+        stateList.forEach(mls->dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress));
         progress.complete();
     }
 
     public void loadMods(final ModWorkManager.DrivenExecutor syncExecutor, final Executor parallelExecutor, final Runnable periodicTask) {
         var stateList = stateManager.getStates(ModLoadingPhase.LOAD);
         var progress = StartupMessageManager.addProgressBar("Mod Loading", stateList.stream().mapToInt(mls -> mls.size().applyAsInt(modList)).sum());
-        for (IModLoadingState mls : stateList) {
-            dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress);
-        }
+        stateList.forEach(mls->dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress));
         progress.complete();
     }
 
     public void finishMods(final ModWorkManager.DrivenExecutor syncExecutor, final Executor parallelExecutor, final Runnable periodicTask) {
         var stateList = stateManager.getStates(ModLoadingPhase.COMPLETE);
         var progress = StartupMessageManager.addProgressBar("Mod Complete", stateList.stream().mapToInt(mls -> mls.size().applyAsInt(modList)).sum());
-        for (IModLoadingState mls : stateList) {
-            dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress);
-        }
-        statusConsumer.accept(String.format("Mod loading complete - %d mods loaded", this.modList.size()));
+        stateList.forEach(mls->dispatchAndHandleError(mls, syncExecutor, parallelExecutor, periodicTask, progress));
+        statusConsumer.ifPresent(c->c.accept(String.format("Mod loading complete - %d mods loaded", this.modList.size())));
         progress.complete();
     }
 
@@ -241,15 +206,10 @@ public class ModLoader {
             LOGGER.error("Cowardly refusing to process mod state change request from {}", state);
             return;
         }
-        progressBar.label(progressBar.name() + " working");
+        progressBar.label(progressBar.name()+ " working");
         syncExecutor.drive(ticker);
-
-        var inlineRunnable = state.inlineRunnable().orElse(null);
-        if (inlineRunnable != null) handleInlineTransition(inlineRunnable, state, syncExecutor, ticker);
-
-        var transition = state.buildTransition(syncExecutor, parallelExecutor, progressBar).orElse(null);
-        if (transition != null) waitForTransition(state, syncExecutor, ticker, transition);
-
+        state.inlineRunnable().ifPresent(a->this.handleInlineTransition(a, state, syncExecutor, ticker));
+        state.buildTransition(syncExecutor, parallelExecutor, progressBar).ifPresent(t->waitForTransition(state, syncExecutor, ticker, t));
         completedStates.add(state);
     }
 
@@ -261,12 +221,10 @@ public class ModLoader {
         pb.complete();
         syncExecutor.drive(ticker);
     }
-
     private void waitForTransition(final IModLoadingState state, final ModWorkManager.DrivenExecutor syncExecutor, final Runnable ticker, final CompletableFuture<Void> transition) {
         while (!transition.isDone()) {
             syncExecutor.drive(ticker);
         }
-
         try {
             transition.join();
         } catch (CompletionException e) {
@@ -276,38 +234,36 @@ public class ModLoader {
                     .anyMatch(obj -> !(obj instanceof ModLoadingException));
             if (hasNotModLoadingEx) {
                 LOGGER.fatal("Encountered non-modloading exceptions!", e);
-                statusConsumer.accept("ERROR DURING MOD LOADING");
+                statusConsumer.ifPresent(c->c.accept("ERROR DURING MOD LOADING"));
                 throw e;
             }
 
             final List<ModLoadingException> modLoadingExceptions = Arrays.stream(t.getSuppressed())
                     .filter(ModLoadingException.class::isInstance)
                     .map(ModLoadingException.class::cast)
-                    .toList();
+                    .collect(Collectors.toList());
             LOGGER.fatal(LOADING,"Failed to complete lifecycle event {}, {} errors found", state.name(), modLoadingExceptions.size());
-            statusConsumer.accept("ERROR DURING MOD LOADING");
+            statusConsumer.ifPresent(c->c.accept("ERROR DURING MOD LOADING"));
             throw new LoadingFailedException(modLoadingExceptions);
         }
     }
 
-    private List<ModContainer> buildMods(final IModFile modFile) {
-        final Map<String, IModInfo> modInfoMap = new HashMap<>();
-        for (var mod : modFile.getModFileInfo().getMods())
-            modInfoMap.put(mod.getModId(), mod);
+    private List<ModContainer> buildMods(final IModFile modFile)
+    {
+        final Map<String, IModInfo> modInfoMap = modFile.getModFileInfo().getMods().stream().collect(Collectors.toMap(IModInfo::getModId, Function.identity()));
 
         LOGGER.trace(LOADING, "ModContainer is {}", ModContainer.class.getClassLoader());
-        final List<ModContainer> containers = new ArrayList<>();
-        for (var entry : modFile.getScanResult().getTargets().entrySet()) {
-            var container = buildModContainerFromTOML(modFile, modInfoMap, entry.getKey(), entry.getValue());
-            if (container != null)
-                containers.add(container);
-        }
-
+        final List<ModContainer> containers = modFile.getScanResult().getTargets()
+                .entrySet()
+                .stream()
+                .map(e -> buildModContainerFromTOML(modFile, modInfoMap, e))
+                .filter(Objects::nonNull)
+                .toList();
         if (containers.size() != modInfoMap.size()) {
             var modIds = modInfoMap.values().stream().map(IModInfo::getModId).sorted().toList();
             var containerIds = containers.stream().map(c -> c != null ? c.getModId() : "(null)").sorted().toList();
 
-            LOGGER.fatal(LOADING, "File {} constructed {} mods: {}, but had {} mods specified: {}",
+            LOGGER.fatal(LOADING,"File {} constructed {} mods: {}, but had {} mods specified: {}",
                     modFile.getFilePath(),
                     containers.size(), containerIds,
                     modInfoMap.size(), modIds);
@@ -322,20 +278,17 @@ public class ModLoader {
 
             loadingExceptions.add(new ModLoadingException(null, ModLoadingStage.CONSTRUCT, "fml.modloading.missingclasses", null, modFile.getFilePath()));
         }
-
         // remove errored mod containers
         return containers.stream().filter(mc -> mc.modLoadingStage != ModLoadingStage.ERROR).toList();
     }
 
-    private ModContainer buildModContainerFromTOML(final IModFile modFile, final Map<String, IModInfo> modInfoMap,
-        final String modId, final IModLanguageProvider.IModLanguageLoader languageLoader
-    ) {
+    private ModContainer buildModContainerFromTOML(final IModFile modFile, final Map<String, IModInfo> modInfoMap, final Map.Entry<String, ? extends IModLanguageProvider.IModLanguageLoader> idToProviderEntry) {
         try {
-            IModInfo info = modInfoMap.get(modId);
-            // throw a missing metadata error if there is no matching modid in the modInfoMap from the mods.toml file
-            if (info == null)
-                throw new ModLoadingException(null, ModLoadingStage.CONSTRUCT, "fml.modloading.missingmetadata", null, modId);
-
+            final String modId = idToProviderEntry.getKey();
+            final IModLanguageProvider.IModLanguageLoader languageLoader = idToProviderEntry.getValue();
+            IModInfo info = Optional.ofNullable(modInfoMap.get(modId)).
+                    // throw a missing metadata error if there is no matching modid in the modInfoMap from the mods.toml file
+                    orElseThrow(()->new ModLoadingException(null, ModLoadingStage.CONSTRUCT, "fml.modloading.missingmetadata", null, modId));
             return languageLoader.loadMod(info, modFile.getScanResult(), FMLLoader.getGameLayer());
         } catch (ModLoadingException mle) {
             // exceptions are caught and added to the error list for later handling
@@ -350,7 +303,7 @@ public class ModLoader {
      * and don't want to cause extraneous crashes due to trying to do things that aren't possible in a "broken load"
      */
     public static boolean isLoadingStateValid() {
-        return loadingStateValid;
+        return get().loadingStateValid;
     }
 
     public boolean hasCompletedState(final String stateName) {
@@ -358,59 +311,51 @@ public class ModLoader {
         return completedStates.contains(state);
     }
 
-    public static <T extends IModBusEvent> void runEventGenerator(Function<ModContainer, T> generator) {
+    public <T extends Event & IModBusEvent> void runEventGenerator(Function<ModContainer, T> generator) {
         if (!loadingStateValid) {
             LOGGER.error("Cowardly refusing to send event generator to a broken mod state");
             return;
         }
-        for (var mod : ModList.get().getLoadedMods())
-            mod.acceptEvent(generator.apply(mod));
+        ModList.get().forEachModInOrder(mc -> mc.acceptEvent(generator.apply(mc)));
     }
 
-    public static <T extends IModBusEvent> void postEvent(T e) {
+    public <T extends Event & IModBusEvent> void postEvent(T e) {
         if (!loadingStateValid) {
             LOGGER.error("Cowardly refusing to send event {} to a broken mod state", e.getClass().getName());
             return;
         }
-        for (var mod : ModList.get().getLoadedMods())
-            mod.acceptEvent(e);
+        ModList.get().forEachModInOrder(mc -> mc.acceptEvent(e));
     }
-
-    public static <T extends IModBusEvent> T postEventWithReturn(T e) {
+    public <T extends Event & IModBusEvent> T postEventWithReturn(T e) {
         if (!loadingStateValid) {
             LOGGER.error("Cowardly refusing to send event {} to a broken mod state", e.getClass().getName());
             return e;
         }
-        for (var mod : ModList.get().getLoadedMods())
-            mod.acceptEvent(e);
+        ModList.get().forEachModInOrder(mc -> mc.acceptEvent(e));
         return e;
     }
-
-    @SuppressWarnings("removal")
-    public static <T extends IModBusEvent> void postEventWrapContainerInModOrder(T event) {
-        postEventWithWrapInModOrder(event,
-            (mc, e) -> ModLoadingContext.get().setActiveContainer(mc),
-            (mc, e) -> ModLoadingContext.get().setActiveContainer(null)
-        );
+    public <T extends Event & IModBusEvent> void postEventWrapContainerInModOrder(T event) {
+        postEventWithWrapInModOrder(event, (mc, e) -> ModLoadingContext.get().setActiveContainer(mc), (mc, e) -> ModLoadingContext.get().setActiveContainer(null));
     }
-
-    public static <T extends IModBusEvent> void postEventWithWrapInModOrder(T e, BiConsumer<ModContainer, T> pre, BiConsumer<ModContainer, T> post) {
+    public <T extends Event & IModBusEvent> void postEventWithWrapInModOrder(T e, BiConsumer<ModContainer, T> pre, BiConsumer<ModContainer, T> post) {
         if (!loadingStateValid) {
             LOGGER.error("Cowardly refusing to send event {} to a broken mod state", e.getClass().getName());
             return;
         }
-        for (var mod : ModList.get().getLoadedMods()) {
-            pre.accept(mod, e);
-            mod.acceptEvent(e);
-            post.accept(mod, e);
-        }
+        ModList.get().forEachModInOrder(mc -> {
+            pre.accept(mc, e);
+            mc.acceptEvent(e);
+            post.accept(mc, e);
+        });
     }
 
-    public List<ModLoadingWarning> getWarnings() {
+    public List<ModLoadingWarning> getWarnings()
+    {
         return ImmutableList.copyOf(this.loadingWarnings);
     }
 
-    public void addWarning(ModLoadingWarning warning) {
+    public void addWarning(ModLoadingWarning warning)
+    {
         this.loadingWarnings.add(warning);
     }
 
@@ -420,7 +365,7 @@ public class ModLoader {
         return runningDataGen;
     }
 
-    private static final class ErroredModContainer extends ModContainer {
+    private static class ErroredModContainer extends ModContainer {
         public ErroredModContainer() {
             super();
         }

fmlcore/src/main/java/net/minecraftforge/fml/ModLoadingContext.java

@@ -8,53 +8,52 @@ package net.minecraftforge.fml;
 import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.config.IConfigSpec;
 import net.minecraftforge.fml.config.ModConfig;
+import net.minecraftforge.fml.loading.FMLLoader;
 import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.util.function.BiPredicate;
 import java.util.function.Supplier;
 
-public class ModLoadingContext {
+public class ModLoadingContext
+{
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final ThreadLocal<ModLoadingContext> context = ThreadLocal.withInitial(ModLoadingContext::new);
     private ModContainer activeContainer;
     private Object languageExtension;
+    private ModLoadingStage stage;
 
     /**
-     * @deprecated Use the context provided by your language loader in your mod's constructor
+     * @deprecated Use the context provided by your language loader in your mod's constructor.
      */
-    @Deprecated(forRemoval = true, since="1.21.1")
+    @Deprecated(forRemoval = true, since = "1.21.1")
     public static ModLoadingContext get() {
         return context.get();
     }
 
     /**
-     * @deprecated Going to be moved to ForgeHooks for Internal use.
+     * @deprecated Going to be moved to ForgeHooks for internal use.
      */
-    @Deprecated(forRemoval = true, since="1.21.1")
+    @Deprecated(forRemoval = true, since = "1.21.1")
     public void setActiveContainer(final ModContainer container) {
         this.activeContainer = container;
         this.languageExtension = container == null ? null : container.contextExtension.get();
     }
 
     /**
-     * Going to be moved to ForgeHooks for Internal use.
+     * Going to be moved to ForgeHooks for internal use.
      * @deprecated Override/Use {@link ModLoadingContext#getContainer()}
      */
-    @Deprecated(forRemoval = true, since="1.21.1")
+    @Deprecated(forRemoval = true, since = "1.21.1")
     public ModContainer getActiveContainer() {
         return activeContainer == null ? ModList.get().getModContainerById("minecraft").orElseThrow(()->new RuntimeException("Where is minecraft???!")) : activeContainer;
     }
 
-    /**
-     * @deprecated Going to be moved to ForgeHooks for Internal use.
-     */
-    @Deprecated(forRemoval = true, since="1.21.1")
+    @Deprecated(forRemoval = true, since = "1.21.1")
     public String getActiveNamespace() {
         return activeContainer == null ? "minecraft" : activeContainer.getNamespace();
     }
 
-    /**
-     * @return {@link ModLoadingContext#getActiveContainer()} by default.
-     */
     public ModContainer getContainer() {
         return getActiveContainer();
     }
@@ -129,7 +128,6 @@ public class ModLoadingContext {
         getContainer().addConfig(new ModConfig(type, spec, getContainer(), fileName));
     }
 
-
     @SuppressWarnings("unchecked")
     public <T> T extension() {
         return (T)languageExtension;

fmlcore/src/main/java/net/minecraftforge/fml/ModLoadingState.java

@@ -5,6 +5,8 @@
 
 package net.minecraftforge.fml;
 
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.fml.loading.progress.ProgressMeter;
 
 import java.util.Optional;
@@ -24,27 +26,20 @@ import java.util.function.ToIntFunction;
  * @param inlineRunnable an optional runnable, which runs before starting the transition from this state to the next
  * @param transition     optional state transition information
  */
-public record ModLoadingState(
-    String name,
-    String previous,
-    Function<ModList, String> message,
-    ToIntFunction<ModList> size,
-    ModLoadingPhase phase,
-    Optional<Consumer<ModList>> inlineRunnable,
-    Optional<IModStateTransition> transition
-) implements IModLoadingState {
+public record ModLoadingState(String name, String previous,
+                              Function<ModList, String> message,
+                              ToIntFunction<ModList> size,
+                              ModLoadingPhase phase,
+                              Optional<Consumer<ModList>> inlineRunnable,
+                              Optional<IModStateTransition> transition) implements IModLoadingState {
     @Override
-    public Optional<CompletableFuture<Void>> buildTransition(
-        final Executor syncExecutor,
-        final Executor parallelExecutor,
-        final ProgressMeter progressBar,
-        final Function<Executor, CompletableFuture<Void>> preSyncTask,
-        final Function<Executor, CompletableFuture<Void>> postSyncTask
-    ) {
-        var transition = this.transition.orElse(null);
-        return transition == null
-                ? Optional.empty()
-                : Optional.ofNullable(transition.build(name, syncExecutor, parallelExecutor, progressBar, preSyncTask, postSyncTask));
+    public <T extends Event & IModBusEvent>
+    Optional<CompletableFuture<Void>> buildTransition(final Executor syncExecutor,
+                                                      final Executor parallelExecutor,
+                                                      final ProgressMeter progressBar,
+                                                      final Function<Executor, CompletableFuture<Void>> preSyncTask,
+                                                      final Function<Executor, CompletableFuture<Void>> postSyncTask) {
+        return transition.map(t -> t.build(name, syncExecutor, parallelExecutor, progressBar, preSyncTask, postSyncTask));
     }
 
     /**
@@ -54,12 +49,9 @@ public record ModLoadingState(
      * @param name     the name of the state
      * @param previous the name of the immediately previous state to this state
      * @param phase    the mod loading phase the state belongs to
-     *
-     * @deprecated Use the builder
      */
-    @Deprecated(since = "1.21.3", forRemoval = true)
     public static ModLoadingState empty(final String name, final String previous, final ModLoadingPhase phase) {
-        return of(name, phase).after(previous).empty();
+        return new ModLoadingState(name, previous, ml -> "", f->0, phase, Optional.empty(), Optional.empty());
     }
 
     /**
@@ -70,13 +62,11 @@ public record ModLoadingState(
      * @param previous   the name of the immediately previous state to this state
      * @param phase      the mod loading phase the state belongs to
      * @param transition the state transition information
-     *
-     * @deprecated Use the builder
+     * @return a mod loading state with state transition information and a default message
      */
-    @Deprecated(since = "1.21.3", forRemoval = true)
     public static ModLoadingState withTransition(final String name, final String previous, final ModLoadingPhase phase,
                                                  final IModStateTransition transition) {
-        return of(name, phase).after(previous).withTransition(transition);
+        return new ModLoadingState(name, previous, ml -> "Processing transition " + name, ModList::size, phase, Optional.empty(), Optional.of(transition));
     }
 
     /**
@@ -88,14 +78,11 @@ public record ModLoadingState(
      * @param phase      the mod loading phase the state belongs to
      * @param transition the state transition information
      * @return a mod loading state with state transition information and a custom message
-     *
-     * @deprecated Use the builder
      */
-    @Deprecated(since = "1.21.3", forRemoval = true)
     public static ModLoadingState withTransition(final String name, final String previous,
                                                  final Function<ModList, String> message, final ModLoadingPhase phase,
                                                  final IModStateTransition transition) {
-        return of(name, phase).after(previous).message(message).withTransition(transition);
+        return new ModLoadingState(name, previous, message, ModList::size, phase, Optional.empty(), Optional.of(transition));
     }
 
     /**
@@ -107,59 +94,9 @@ public record ModLoadingState(
      * @param phase    the mod loading phase the state belongs to
      * @param inline   an optional runnable, which runs before starting the transition from this state to the next
      * @return a mod loading state with an inline runnable and default message
-     *
-     * @deprecated Use the builder
      */
-    @Deprecated(since = "1.21.3", forRemoval = true)
     public static ModLoadingState withInline(final String name, final String previous, final ModLoadingPhase phase,
                                              final Consumer<ModList> inline) {
-        return of(name, phase).after(previous).withInline(inline);
-    }
-
-    public static Builder of(final String name, final ModLoadingPhase phase) {
-        return new Builder(name, phase);
-    }
-
-    public static class Builder {
-        private final String name;
-        private final ModLoadingPhase phase;
-        private String after;
-        private Function<ModList, String> message = null;
-        private ToIntFunction<ModList> size = null;
-
-        private Builder(final String name, final ModLoadingPhase phase) {
-            this.name = name;
-            this.phase = phase;
-        }
-
-        public Builder after(final ModLoadingState value) { return after(value.name()); }
-        public Builder after(final String value) {
-            this.after = value;
-            return this;
-        }
-
-        public Builder message(final String value) { return message(ml -> value); }
-        public Builder message(final Function<ModList, String> value) {
-            this.message = value;
-            return this;
-        }
-
-        public Builder size(final int value) { return size(ml -> value); }
-        public Builder size(final ToIntFunction<ModList> value) {
-            this.size = value;
-            return this;
-        }
-
-        public ModLoadingState empty() {
-            return new ModLoadingState(name, after, message != null ? message : ml -> "", size != null ? size : ml -> 0, phase, Optional.empty(), Optional.empty());
-        }
-
-        public ModLoadingState withTransition(final IModStateTransition transition) {
-            return new ModLoadingState(name, after, message != null ? message : ml -> "Processing transition " + name, size != null ? size : ModList::size, phase, Optional.empty(), Optional.of(transition));
-        }
-
-        public ModLoadingState withInline(final Consumer<ModList> inline) {
-            return new ModLoadingState(name, after, message != null ? message : ml -> "Processing work " + name, size != null ? size : ml -> 0, phase, Optional.of(inline), Optional.empty());
-        }
+        return new ModLoadingState(name, previous, ml -> "Processing work " + name, ml->0, phase, Optional.of(inline), Optional.empty());
     }
 }

fmlcore/src/main/java/net/minecraftforge/fml/ModStateManager.java

@@ -16,13 +16,15 @@ import java.util.stream.Collectors;
 
 @SuppressWarnings("UnstableApiUsage")
 public class ModStateManager {
+    static ModStateManager INSTANCE;
     private final EnumMap<ModLoadingPhase, List<IModLoadingState>> stateMap;
 
     public ModStateManager() {
+        INSTANCE = this;
         final var sp = ServiceLoader.load(FMLLoader.getGameLayer(), IModStateProvider.class);
         this.stateMap = ServiceLoaderUtils.streamWithErrorHandling(sp, sce->{})
                 .map(IModStateProvider::getAllStates)
-                .flatMap(List::stream)
+                .<IModLoadingState>mapMulti(Iterable::forEach)
                 .collect(Collectors.groupingBy(IModLoadingState::phase, ()->new EnumMap<>(ModLoadingPhase.class), Collectors.toUnmodifiableList()));
     }
 
@@ -34,16 +36,14 @@ public class ModStateManager {
         var dummy = ModLoadingState.empty("", "", phase);
         nodes.forEach(graph::addNode);
         graph.addNode(dummy);
-        for (IModLoadingState node : nodes) {
-            graph.putEdge(lookup.getOrDefault(node.previous(), dummy), node);
-        }
+        nodes.forEach(n->graph.putEdge(lookup.getOrDefault(n.previous(), dummy), n));
         return TopologicalSort.topologicalSort(graph, Comparator.comparingInt(nodes::indexOf)).stream().filter(st->st!=dummy).toList();
     }
 
     public IModLoadingState findState(final String stateName) {
         return stateMap.values()
                 .stream()
-                .flatMap(List::stream)
+                .flatMap(Collection::stream)
                 .filter(mls -> mls.name().equals(stateName))
                 .findFirst()
                 .orElseThrow(() -> new IllegalArgumentException("Unknown IModLoadingState: " + stateName));

fmlcore/src/main/java/net/minecraftforge/fml/ModStateTransitionHelper.java

@@ -1,184 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.LinkedHashMap;
-import java.util.List;
-import java.util.Objects;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CompletionException;
-import java.util.concurrent.CompletionStage;
-import java.util.concurrent.Executor;
-import java.util.function.BiFunction;
-import java.util.function.Function;
-
-import org.jetbrains.annotations.ApiStatus;
-
-import net.minecraftforge.fml.IModStateTransition.EventGenerator;
-import net.minecraftforge.fml.event.IModBusEvent;
-import net.minecraftforge.fml.loading.progress.ProgressMeter;
-
-@ApiStatus.Internal
-class ModStateTransitionHelper {
-    static final IModStateTransition NOOP = new NoopTransition();
-    record NoopTransition() implements IModStateTransition {
-        @Override
-        public ThreadSelector threadSelector() {
-            return ThreadSelector.SYNC;
-        }
-
-        @Override
-        public BiFunction<Executor, CompletableFuture<Void>, CompletableFuture<Void>> finalActivityGenerator() {
-            return (e, t) -> t.thenApplyAsync(Function.identity(), e);
-        }
-    }
-
-    static <V> CompletionStage<Void> completableFutureFromExceptionList(List<FutureResult<V>> t) {
-        if (t.stream().noneMatch(e -> e.exception() != null)) {
-            return CompletableFuture.completedFuture(null);
-        } else {
-            final var throwables = t.stream().map(FutureResult::exception).filter(Objects::nonNull).toList();
-            CompletableFuture<Void> cf = new CompletableFuture<>();
-            final RuntimeException accumulator = new RuntimeException();
-            cf.completeExceptionally(accumulator);
-            for (Throwable exception : throwables) {
-                if (exception instanceof CompletionException) {
-                    exception = exception.getCause();
-                }
-                if (exception.getSuppressed().length != 0) {
-                    for (Throwable throwable : exception.getSuppressed()) {
-                        accumulator.addSuppressed(throwable);
-                    }
-                } else {
-                    accumulator.addSuppressed(exception);
-                }
-            }
-            return cf;
-        }
-    }
-
-    record FutureResult<V>(V value, Throwable exception){}
-
-    static <V> CompletableFuture<List<FutureResult<V>>> gather(Collection<? extends CompletableFuture<? extends V>> futures) {
-        var list = new ArrayList<FutureResult<V>>(futures.size());
-        var results = new CompletableFuture[futures.size()];
-
-        for (var future : futures) {
-            int i = list.size();
-            list.add(null);
-            @SuppressWarnings("unchecked") // Bypass a weird javac error with generic by forcing it to be the exact type we want.
-            var raw = ((CompletableFuture<V>)future);
-            results[i] = raw.whenComplete((result, exception) -> list.set(i, new FutureResult<>(result, exception)));
-        }
-
-        return CompletableFuture.allOf(results).handle((r, th)->null).thenApply(res -> list);
-    }
-
-    private static <T extends IModBusEvent> void addCompletableFutureTaskForModDispatch(
-        final IModStateTransition transition,
-        final Executor executor,
-        final List<CompletableFuture<Void>> completableFutures,
-        final ProgressMeter progressBar,
-        final EventGenerator<T> eventGenerator,
-        final BiFunction<ModLoadingStage, Throwable, ModLoadingStage> nextState
-     ) {
-
-        @SuppressWarnings("removal")
-        var preDispatchHook = getHook(transition.preDispatchHook(), executor, eventGenerator);
-        if (preDispatchHook != null)
-            completableFutures.add(preDispatchHook);
-
-        var modFutures = new LinkedHashMap<String, CompletableFuture<Void>>();
-        for (var mod : ModList.get().getLoadedMods()) {
-
-            CompletableFuture<Void> parent = null;
-            if (mod.dependencies.isEmpty()) {
-                parent = CompletableFuture.allOf();
-            } else {
-                var deps = new CompletableFuture[mod.dependencies.size()];
-                int idx = 0;
-                for (var depContainer : mod.dependencies) {
-                    var future = modFutures.get(depContainer.getModId());
-                    if (future == null)
-                        throw new IllegalStateException("Could not find dependency future " + depContainer.getModId() + " for " + mod.getModId());
-                    deps[idx++] = future;
-                }
-                parent = CompletableFuture.allOf(deps);
-            }
-
-            @SuppressWarnings("removal")
-            var dispatch = parent
-                .thenRunAsync(() -> {
-                    ModLoadingContext.get().setActiveContainer(mod);
-                    var handler = mod.activityMap.get(mod.modLoadingStage);
-                    if (handler != null)
-                        handler.run();
-                    mod.acceptEvent(eventGenerator.apply(mod));
-                }, executor)
-                .whenComplete((mc, exception) -> {
-                    mod.modLoadingStage = nextState.apply(mod.modLoadingStage, exception);
-                    progressBar.increment();
-                    ModLoadingContext.get().setActiveContainer(null);
-                });
-
-            modFutures.put(mod.getModId(), dispatch);
-        }
-
-        var dispatch = gather(modFutures.values()).thenComposeAsync(ModStateTransitionHelper::completableFutureFromExceptionList, executor);
-        completableFutures.add(dispatch);
-
-        @SuppressWarnings("removal")
-        var postDispatchHook = getHook(transition.preDispatchHook(), executor, eventGenerator);
-        if (postDispatchHook != null)
-            completableFutures.add(postDispatchHook);
-    }
-
-    private static <T extends IModBusEvent> CompletableFuture<Void> getHook(BiFunction<Executor, ? extends EventGenerator<?>, CompletableFuture<Void>> hook, Executor executor, EventGenerator<T> eventGenerator) {
-        if (hook == null || hook == IModStateTransition.NULL_HOOK) return null;
-        @SuppressWarnings("unchecked")
-        var hookTyped = (BiFunction<Executor, EventGenerator<T>, CompletableFuture<Void>>)hook;
-        return hookTyped.apply(executor, eventGenerator);
-    }
-
-    static <T extends IModBusEvent> CompletableFuture<Void> build(
-        final IModStateTransition transition,
-        final String name,
-        final Executor syncExecutor,
-        final Executor parallelExecutor,
-        final ProgressMeter progressBar,
-        final Function<Executor, CompletableFuture<Void>> preSyncTask,
-        final Function<Executor, CompletableFuture<Void>> postSyncTask
-    ) {
-        List<CompletableFuture<Void>> futures = new ArrayList<>();
-        final var executor = transition.threadSelector().apply(syncExecutor, parallelExecutor);
-
-        @SuppressWarnings({ "removal", "unchecked" })
-        var events = transition.eventFunctionStream().get().map(f -> (EventGenerator<T>)f).toList();
-        for (int x = 0; x < events.size(); x++) {
-            var gen = events.get(x);
-            BiFunction<ModLoadingStage, Throwable, ModLoadingStage> state = x == events.size() - 1
-                ? transition.nextModLoadingStage()
-                : ModLoadingStage::currentState;
-            addCompletableFutureTaskForModDispatch(transition, executor, futures, progressBar, gen, state);
-        }
-
-        final CompletableFuture<Void> preSyncTaskCF = preSyncTask.apply(syncExecutor);
-        final CompletableFuture<Void> eventDispatchCF = gather(futures).thenCompose(ModStateTransitionHelper::completableFutureFromExceptionList);
-        final CompletableFuture<Void> postEventDispatchCF = preSyncTaskCF
-            .thenApplyAsync(n -> {
-                progressBar.label(progressBar.name() + ": dispatching " + name);
-                return null;
-            }, parallelExecutor)
-            .thenComposeAsync(n -> eventDispatchCF, parallelExecutor)
-            .thenApply(r -> {
-                postSyncTask.apply(syncExecutor);
-                return null;
-            });
-        return transition.finalActivityGenerator().apply(syncExecutor, postEventDispatchCF);
-    }
-}

fmlcore/src/main/java/net/minecraftforge/fml/ModWorkManager.java

@@ -17,7 +17,6 @@ import static net.minecraftforge.fml.Logging.LOADING;
 public class ModWorkManager {
     private static final Logger LOGGER = LogManager.getLogger();
     private static final long PARK_TIME = TimeUnit.MILLISECONDS.toNanos(1);
-
     public interface DrivenExecutor extends Executor {
         boolean selfDriven();
         boolean driveOne();
@@ -34,11 +33,8 @@ public class ModWorkManager {
             }
         }
     }
-
-    private record SyncExecutor(ConcurrentLinkedDeque<Runnable> tasks) implements DrivenExecutor {
-        public SyncExecutor() {
-            this(new ConcurrentLinkedDeque<>());
-        }
+    private static class SyncExecutor implements DrivenExecutor {
+        private ConcurrentLinkedDeque<Runnable> tasks = new ConcurrentLinkedDeque<>();
 
         @Override
         public boolean driveOne() {
@@ -60,7 +56,13 @@ public class ModWorkManager {
         }
     }
 
-    private record WrappingExecutor(Executor wrapped) implements DrivenExecutor {
+    private static class WrappingExecutor implements DrivenExecutor {
+        private final Executor wrapped;
+
+        public WrappingExecutor(final Executor executor) {
+            this.wrapped = executor;
+        }
+
         @Override
         public boolean selfDriven() {
             return true;
@@ -77,9 +79,11 @@ public class ModWorkManager {
         }
     }
 
-    private static final SyncExecutor syncExecutor = new SyncExecutor();
+    private static SyncExecutor syncExecutor;
 
     public static DrivenExecutor syncExecutor() {
+        if (syncExecutor == null)
+            syncExecutor = new SyncExecutor();
         return syncExecutor;
     }
 
@@ -87,8 +91,14 @@ public class ModWorkManager {
         return new WrappingExecutor(executor);
     }
 
+    private static ForkJoinPool parallelThreadPool;
     public static Executor parallelExecutor() {
-        return LazyInit.PARALLEL_EXECUTOR;
+        if (parallelThreadPool == null) {
+            final int loadingThreadCount = FMLConfig.getIntConfigValue(FMLConfig.ConfigValue.MAX_THREADS);
+            LOGGER.debug(LOADING, "Using {} threads for parallel mod-loading", loadingThreadCount);
+            parallelThreadPool = new ForkJoinPool(loadingThreadCount, ModWorkManager::newForkJoinWorkerThread, null, false);
+        }
+        return parallelThreadPool;
     }
 
     private static ForkJoinWorkerThread newForkJoinWorkerThread(ForkJoinPool pool) {
@@ -99,14 +109,4 @@ public class ModWorkManager {
         return thread;
     }
 
-    private static final class LazyInit {
-        private LazyInit() {}
-        private static final ForkJoinPool PARALLEL_EXECUTOR;
-
-        static {
-            final int loadingThreadCount = FMLConfig.getIntConfigValue(FMLConfig.ConfigValue.MAX_THREADS);
-            LOGGER.debug(LOADING, "Using {} threads for parallel mod-loading", loadingThreadCount);
-            PARALLEL_EXECUTOR = new ForkJoinPool(loadingThreadCount, ModWorkManager::newForkJoinWorkerThread, null, false);
-        }
-    }
 }

fmlcore/src/main/java/net/minecraftforge/fml/OptionalMod.java

@@ -23,7 +23,7 @@ public final class OptionalMod<T>
         return new OptionalMod<>(modId);
     }
 
-    private static final OptionalMod<?> EMPTY = new OptionalMod<>(true);
+    private static OptionalMod<?> EMPTY = new OptionalMod<>(true);
     private static <T> OptionalMod<T> empty() {
         @SuppressWarnings("unchecked")
         OptionalMod<T> t = (OptionalMod<T>) EMPTY;
@@ -213,8 +213,8 @@ public final class OptionalMod<T>
     public boolean equals(Object obj)
     {
         if (this == obj) return true;
-        if (obj instanceof OptionalMod<?> optionalMod) {
-            return Objects.equals(optionalMod.modId, modId);
+        if (obj instanceof OptionalMod) {
+            return Objects.equals(((OptionalMod)obj).modId, modId);
         }
         return false;
     }

fmlcore/src/main/java/net/minecraftforge/fml/config/ConfigFileTypeHandler.java

@@ -14,7 +14,6 @@ import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.FMLConfig;
 import net.minecraftforge.fml.loading.FMLPaths;
 import org.apache.commons.io.FilenameUtils;
-import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
 
 import java.io.IOException;
@@ -26,66 +25,9 @@ import static net.minecraftforge.fml.config.ConfigTracker.CONFIG;
 
 public class ConfigFileTypeHandler {
     private static final Logger LOGGER = LogUtils.getLogger();
+    static ConfigFileTypeHandler TOML = new ConfigFileTypeHandler();
     private static final Path defaultConfigPath = FMLPaths.GAMEDIR.get().resolve(FMLConfig.getConfigValue(FMLConfig.ConfigValue.DEFAULT_CONFIG_PATH));
 
-    private static final ConfigFileTypeHandler CLIENT = new ConfigFileTypeHandler(ModConfig.Type.CLIENT);
-    private static final ConfigFileTypeHandler COMMON = new ConfigFileTypeHandler(ModConfig.Type.COMMON);
-    private static final ConfigFileTypeHandler SERVER = new ConfigFileTypeHandler(ModConfig.Type.SERVER);
-
-    private final @Nullable ModConfig.Type type;
-    private @Nullable FileWatcher watcher;
-
-    // exists for bin compat
-    public ConfigFileTypeHandler() {
-        this(null);
-    }
-
-    private ConfigFileTypeHandler(@Nullable ModConfig.Type type) {
-        this.type = type;
-    }
-
-    /**
-     * Gets the handler for the given {@link ModConfig.Type}.
-     *
-     * @param type The type to get the handler for
-     * @return The handler
-     */
-    static ConfigFileTypeHandler get(ModConfig.Type type) {
-        return switch (type) {
-            case CLIENT -> CLIENT;
-            case COMMON -> COMMON;
-            case SERVER -> SERVER;
-        };
-    }
-
-    /**
-     * Gets the {@link FileWatcher} for this handler, creating it if it doesn't exist and/or has been stopped.
-     *
-     * @return The watcher
-     *
-     * @apiNote This is package-private so modders can't just call {@link FileWatcher#stop()} and fuck up everything.
-     */
-    FileWatcher getWatcher() {
-        if (this.watcher == null) {
-            LOGGER.debug(CONFIG, "Starting watcher for handler: {}", this);
-            this.watcher = new FileWatcher();
-        }
-
-        return this.watcher;
-    }
-
-    /**
-     * Stops the {@link FileWatcher} for this handler, and sets it to null afterward. Use this instead of
-     * {@link FileWatcher#stop()}.
-     */
-    void stopWatcher() {
-        if (this.watcher == null) return;
-
-        LOGGER.debug(CONFIG, "Stopping watcher for hander: {}", this);
-        this.watcher.stop();
-        this.watcher = null;
-    }
-
     public Function<ModConfig, CommentedFileConfig> reader(Path configBasePath) {
         return (c) -> {
             final Path configPath = configBasePath.resolve(c.getFileName());
@@ -95,7 +37,7 @@ public class ConfigFileTypeHandler {
                     onFileNotFound((newfile, configFormat)-> setupConfigFile(c, newfile, configFormat)).
                     writingMode(WritingMode.REPLACE).
                     build();
-            LOGGER.debug(CONFIG, "Built TOML config for {}", configPath);
+            LOGGER.debug(CONFIG, "Built TOML config for {}", configPath.toString());
             try
             {
                 configData.load();
@@ -104,9 +46,13 @@ public class ConfigFileTypeHandler {
             {
                 throw new ConfigLoadingException(c, ex);
             }
-            LOGGER.debug(CONFIG, "Loaded TOML config file {}", configPath);
-            this.getWatcher().addWatch(configPath, new ConfigWatcher(c, configData, Thread.currentThread().getContextClassLoader()));
-            LOGGER.debug(CONFIG, "Watching TOML config file {} for changes", configPath);
+            LOGGER.debug(CONFIG, "Loaded TOML config file {}", configPath.toString());
+            try {
+                FileWatcher.defaultInstance().addWatch(configPath, new ConfigWatcher(c, configData, Thread.currentThread().getContextClassLoader()));
+                LOGGER.debug(CONFIG, "Watching TOML config file {} for changes", configPath.toString());
+            } catch (IOException e) {
+                throw new RuntimeException("Couldn't watch config file", e);
+            }
             return configData;
         };
     }
@@ -114,13 +60,13 @@ public class ConfigFileTypeHandler {
     public void unload(Path configBasePath, ModConfig config) {
         Path configPath = configBasePath.resolve(config.getFileName());
         try {
-            this.getWatcher().removeWatch(configPath);
+            FileWatcher.defaultInstance().removeWatch(configBasePath.resolve(config.getFileName()));
         } catch (RuntimeException e) {
-            LOGGER.error("Failed to remove config {} from tracker!", configPath, e);
+            LOGGER.error("Failed to remove config {} from tracker!", configPath.toString(), e);
         }
     }
 
-    private static boolean setupConfigFile(final ModConfig modConfig, final Path file, final ConfigFormat<?> conf) throws IOException {
+    private boolean setupConfigFile(final ModConfig modConfig, final Path file, final ConfigFormat<?> conf) throws IOException {
         if (!Files.isDirectory(file.getParent())) {
             Files.createDirectories(file.getParent());
         }
@@ -167,16 +113,17 @@ public class ConfigFileTypeHandler {
         }
     }
 
-    @Override
-    public String toString() {
-        return "ConfigFileTypeHandler[" + (type != null ? type : "UNKNOWN") + "]";
-    }
+    private static class ConfigWatcher implements Runnable {
+        private final ModConfig modConfig;
+        private final CommentedFileConfig commentedFileConfig;
+        private final ClassLoader realClassLoader;
+
+        ConfigWatcher(final ModConfig modConfig, final CommentedFileConfig commentedFileConfig, final ClassLoader classLoader) {
+            this.modConfig = modConfig;
+            this.commentedFileConfig = commentedFileConfig;
+            this.realClassLoader = classLoader;
+        }
 
-    private record ConfigWatcher(
-            ModConfig modConfig,
-            CommentedFileConfig commentedFileConfig,
-            ClassLoader realClassLoader
-    ) implements Runnable {
         @Override
         public void run() {
             // Force the regular classloader onto the special thread

fmlcore/src/main/java/net/minecraftforge/fml/config/ConfigTracker.java

@@ -8,9 +8,6 @@ package net.minecraftforge.fml.config;
 import com.electronwill.nightconfig.core.CommentedConfig;
 import com.electronwill.nightconfig.core.file.CommentedFileConfig;
 import com.mojang.logging.LogUtils;
-import net.minecraftforge.api.distmarker.Dist;
-import net.minecraftforge.fml.DistExecutor;
-import net.minecraftforge.fml.loading.FMLPaths;
 import org.slf4j.Logger;
 import org.slf4j.Marker;
 import org.slf4j.MarkerFactory;
@@ -50,32 +47,15 @@ public class ConfigTracker {
 
     public void loadConfigs(ModConfig.Type type, Path configBasePath) {
         LOGGER.debug(CONFIG, "Loading configs type {}", type);
-        for (ModConfig config : this.configSets.get(type)) {
-            openConfig(config, configBasePath);
-        }
+        this.configSets.get(type).forEach(config -> openConfig(config, configBasePath));
     }
 
-    // TODO: [FML] This is only called for the server (outside of forceUnload)
-    // rethink config implementation for eventual FML rewrite
     public void unloadConfigs(ModConfig.Type type, Path configBasePath) {
         LOGGER.debug(CONFIG, "Unloading configs type {}", type);
-        for (ModConfig config : this.configSets.get(type)) {
-            closeConfig(config, configBasePath);
-        }
-        ConfigFileTypeHandler.get(type).stopWatcher();
+        this.configSets.get(type).forEach(config -> closeConfig(config, configBasePath));
     }
 
-    // If there is a better way to do this, please tell me. Because this is FUCKED
-    public void forceUnload() {
-        // This is how ModStateProvider handles loading configs. So we're doing the same but with unloadConfigs instead
-        DistExecutor.unsafeRunWhenOn(Dist.CLIENT, () -> () -> this.unloadConfigs(ModConfig.Type.CLIENT, FMLPaths.CONFIGDIR.get()));
-        this.unloadConfigs(ModConfig.Type.COMMON, FMLPaths.CONFIGDIR.get());
-
-        // just in case server watcher is still alive somehow...
-        ConfigFileTypeHandler.get(ModConfig.Type.SERVER).stopWatcher();
-    }
-
-    private static void openConfig(final ModConfig config, final Path configBasePath) {
+    private void openConfig(final ModConfig config, final Path configBasePath) {
         LOGGER.trace(CONFIG, "Loading config file type {} at {} for {}", config.getType(), config.getFileName(), config.getModId());
         final CommentedFileConfig configData = config.getHandler().reader(configBasePath).apply(config);
         config.setConfigData(configData);
@@ -83,7 +63,7 @@ public class ConfigTracker {
         config.save();
     }
 
-    private static void closeConfig(final ModConfig config, final Path configBasePath) {
+    private void closeConfig(final ModConfig config, final Path configBasePath) {
         if (config.getConfigData() != null) {
             LOGGER.trace(CONFIG, "Closing config file type {} at {} for {}", config.getType(), config.getFileName(), config.getModId());
             // stop the filewatcher before we save the file and close it, so reload doesn't fire

fmlcore/src/main/java/net/minecraftforge/fml/config/IConfigEvent.java

@@ -5,7 +5,7 @@
 
 package net.minecraftforge.fml.config;
 
-import net.minecraftforge.eventbus.api.event.InheritableEvent;
+import net.minecraftforge.eventbus.api.Event;
 import net.minecraftforge.fml.Bindings;
 
 import java.util.function.Function;
@@ -29,7 +29,7 @@ public interface IConfigEvent {
     ModConfig getConfig();
 
     @SuppressWarnings("unchecked")
-    default <T extends InheritableEvent & IConfigEvent> T self() {
+    default <T extends Event & IConfigEvent> T self() {
         return (T) this;
     }
 }

fmlcore/src/main/java/net/minecraftforge/fml/config/ModConfig.java

@@ -24,13 +24,14 @@ public class ModConfig
     private final ModContainer container;
     private final ConfigFileTypeHandler configHandler;
     private CommentedConfig configData;
+    private Callable<Void> saveHandler;
 
     public ModConfig(final Type type, final IConfigSpec<?> spec, final ModContainer container, final String fileName) {
         this.type = type;
         this.spec = spec;
         this.fileName = fileName;
         this.container = container;
-        this.configHandler = ConfigFileTypeHandler.get(type);
+        this.configHandler = ConfigFileTypeHandler.TOML;
         ConfigTracker.INSTANCE.trackConfig(this);
     }
 

fmlcore/src/main/java/net/minecraftforge/fml/event/IModBusEvent.java

@@ -5,27 +5,8 @@
 
 package net.minecraftforge.fml.event;
 
-import net.minecraftforge.eventbus.api.bus.BusGroup;
-import net.minecraftforge.eventbus.api.bus.EventBus;
-import net.minecraftforge.eventbus.api.event.InheritableEvent;
-
 /**
  * Marker interface for events dispatched on the ModLifecycle event bus instead of the primary event bus
  */
-public interface IModBusEvent extends InheritableEvent {
-    /**
-     * @param modEventBusGroup Obtained from {@link net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext#getModBusGroup()} or your language provider's equivalent.
-     * @param eventClass The event type you want to get the associated bus for.
-     */
-    static <T extends IModBusEvent> EventBus<T> getBus(BusGroup modEventBusGroup, Class<T> eventClass) {
-        // Do not copy! Temporary solution until the FML rewrite is complete. May throw in future
-        // without prior notice.
-        //
-        // Mods creating their own events should directly assign the result of the create method to a
-        // static final field in their event class, without wrapping or calling multiple times.
-        //
-        // Mods using existing events should instead use the existing static final BUS field in the
-        // event class (for most events) or getBus(BusGroup) method (for mod bus events).
-        return EventBus.create(modEventBusGroup, eventClass);
-    }
+public interface IModBusEvent {
 }

fmlearlydisplay/build.gradle

@@ -28,7 +28,7 @@ java {
 }
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
     implementation(project(':fmlloader'))
     implementation(project(':fmlcore'))
     implementation(libs.bundles.lwjgl)

fmlearlydisplay/src/main/java/net/minecraftforge/fml/earlydisplay/DisplayWindow.java

@@ -22,7 +22,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.awt.Desktop;
+import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStreamReader;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.net.URI;
@@ -85,17 +87,11 @@ public class DisplayWindow implements ImmediateWindowProvider {
     private ScheduledFuture<?> initializationFuture;
 
     private PerformanceInfo performanceInfo;
-    @SuppressWarnings("unused")
     private ScheduledFuture<?> performanceTick;
     // The GL ID of the window. Used for all operations
     private long window;
     // The thread that contains and ticks the window while Forge is loading mods
-    private static final ScheduledExecutorService renderScheduler = Executors.newSingleThreadScheduledExecutor(r -> {
-        final var thread = Executors.defaultThreadFactory().newThread(r);
-        thread.setName("EarlyDisplay");
-        thread.setDaemon(true);
-        return thread;
-    });
+    private ScheduledExecutorService renderScheduler;
     private int fbWidth;
     private int fbHeight;
     private int fbScale;
@@ -154,7 +150,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
         }
         this.maximized = parsed.has(maximizedopt) || FMLConfig.getBoolConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_MAXIMIZED);
 
-        StartupNotificationManager.modLoaderConsumer().ifPresent(c->c.accept("Forge loading " + FMLLoader.versionInfo().forgeVersion()));
+        StartupNotificationManager.modLoaderConsumer().ifPresent(c->c.accept("Forge loading " + forgeVersion));
         performanceInfo = new PerformanceInfo();
         return start(mcVersion, forgeVersion);
     }
@@ -243,7 +239,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
 
         var date = Calendar.getInstance();
         if (FMLConfig.getBoolConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_SQUIR) || (date.get(Calendar.MONTH) == Calendar.APRIL && date.get(Calendar.DAY_OF_MONTH) == 1))
-            this.elements.addFirst(RenderElement.squir());
+            this.elements.add(0, RenderElement.squir());
 
         glEnable(GL_BLEND);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@@ -263,11 +259,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
         glEnable(GL_BLEND);
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
-        for (var itr = this.elements.iterator(); itr.hasNext(); ) {
-            var element = itr.next();
-            if (!element.render(context, framecount))
-                itr.remove();
-        }
+        this.elements.removeIf(element -> !element.render(context, framecount));
         if (animationTimerTrigger.compareAndSet(true, false)) // we only increment the framecount on a periodic basis
             framecount++;
     }
@@ -292,6 +284,12 @@ public class DisplayWindow implements ImmediateWindowProvider {
      * Start the window and Render Thread; we're ready to go.
      */
     public Runnable start(@Nullable String mcVersion, final String forgeVersion) {
+        renderScheduler = Executors.newSingleThreadScheduledExecutor(r -> {
+            final var thread = Executors.defaultThreadFactory().newThread(r);
+            thread.setName("EarlyDisplay");
+            thread.setDaemon(true);
+            return thread;
+        });
         initWindow(mcVersion);
         this.initializationFuture = renderScheduler.schedule(() -> initRender(mcVersion, forgeVersion), 1, TimeUnit.MILLISECONDS);
         return this::periodicTick;
@@ -303,7 +301,14 @@ public class DisplayWindow implements ImmediateWindowProvider {
         return this.glVersion;
     }
 
-    private static void crashElegantly(String errorDetails) {
+    private void crashElegantly(String errorDetails) {
+        String qrText;
+        try (var is = new BufferedReader(new InputStreamReader(getClass().getResourceAsStream("/glfailure.txt")))) {
+            qrText = is.lines().collect(Collectors.joining("\n"));
+        } catch (IOException ioe) {
+            qrText = "";
+        }
+
         StringBuilder msgBuilder = new StringBuilder(2000);
         msgBuilder.append("Failed to initialize graphics window with current settings.\n");
         msgBuilder.append("\n\n");
@@ -402,13 +407,13 @@ public class DisplayWindow implements ImmediateWindowProvider {
             if (showHelpLog && versidx == 0) {
                 LOGGER.info("""
                 If this message is the only thing at the bottom of your log before a crash, you probably have a driver issue.
-
+                
                 Possible solutions:
                 A) Make sure Minecraft is set to prefer high performance graphics in the OS and/or driver control panel
                 B) Check for driver updates on the graphics brand's website
                 C) Try reinstalling your graphics drivers
                 D) If still not working after trying all of the above, ask for further help on the Forge forums or Discord
-
+                
                 You can safely ignore this message if the game starts up successfully.""");
             }
             glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, GL_VERSIONS[versidx][0]); // we try our versions one at a time
@@ -492,6 +497,10 @@ public class DisplayWindow implements ImmediateWindowProvider {
         glfwPollEvents();
     }
 
+    private void badWindowHandler(final int code, final long desc) {
+        LOGGER.error("Got error from GLFW window init: "+code+ " "+MemoryUtil.memUTF8(desc));
+    }
+
     private void winResize(long window, int width, int height) {
         if (window == this.window && width != 0 && height != 0) {
             this.winWidth = width;
@@ -511,7 +520,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
             this.winY = y;
         }
     }
-    private static void handleLastGLFWError(BiConsumer<Integer, String> handler) {
+    private void handleLastGLFWError(BiConsumer<Integer, String> handler) {
         try (MemoryStack memorystack = MemoryStack.stackPush()) {
             PointerBuffer pointerbuffer = memorystack.mallocPointer(1);
             int error = glfwGetError(pointerbuffer);
@@ -603,25 +612,10 @@ public class DisplayWindow implements ImmediateWindowProvider {
 
     @Override
     public void updateModuleReads(final ModuleLayer layer) {
-        final var FORGE_MODULE = "net.minecraftforge.forge";
-        var forge_module = layer.findModule(FORGE_MODULE).orElse(null);
-        if (forge_module == null)
-            throw new IllegalStateException("Could not find " + FORGE_MODULE + " in " + layer);
-
-        getClass().getModule().addReads(forge_module);
-
-
-        var clz = Class.forName(forge_module, "net.minecraftforge.client.loading.ForgeLoadingOverlay");
-
-        for (var mtd : clz.getDeclaredMethods()) {
-            if (Modifier.isStatic(mtd.getModifiers()) && "newInstance".equals(mtd.getName())) {
-                this.loadingOverlay = mtd;
-                break;
-            }
-        }
-
-        if (loadingOverlay == null)
-            throw new IllegalStateException("Could not find static newInstace method in " + clz.getName());
+        var fm = layer.findModule("forge").orElseThrow();
+        getClass().getModule().addReads(fm);
+        var clz = FMLLoader.getGameLayer().findModule("forge").map(l->Class.forName(l, "net.minecraftforge.client.loading.ForgeLoadingOverlay")).orElseThrow();
+        loadingOverlay = Arrays.stream(clz.getDeclaredMethods()).filter(m-> Modifier.isStatic(m.getModifiers()) && m.getName().equals("newInstance")).findFirst().orElseThrow();
     }
 
     public int getFramebufferTextureId() {
@@ -639,7 +633,8 @@ public class DisplayWindow implements ImmediateWindowProvider {
     }
 
     public void addMojangTexture(final int textureId) {
-        this.elements.addFirst(RenderElement.mojang(textureId, framecount));
+        this.elements.add(0, RenderElement.mojang(textureId, framecount));
+//        this.elements.get(0).retire(framecount + 1);
     }
 
     public void close() {

fmlearlydisplay/src/main/java/net/minecraftforge/fml/earlydisplay/RenderElement.java

@@ -22,8 +22,8 @@ public class RenderElement {
     static int globalAlpha = 255;
     private int retireCount;
 
-    @FunctionalInterface
     interface Renderer {
+
         void accept(SimpleBufferBuilder bb, DisplayContext context, int frame);
 
         default Renderer then(Renderer r) {
@@ -38,9 +38,6 @@ public class RenderElement {
     interface TextureRenderer {
         void accept(SimpleBufferBuilder bb, DisplayContext context, int[] size, int frame);
     }
-
-    /** @deprecated Use {@link Renderer} directly. This was always eagerly resolved, making it an unnecessary wrapper. */
-    @Deprecated(since = "1.21.5", forRemoval = true)
     @FunctionalInterface
     interface Initializer extends Supplier<Renderer> {}
 
@@ -59,18 +56,11 @@ public class RenderElement {
         }
     }
 
-    /** @deprecated Use {@link RenderElement#RenderElement(Renderer)} instead */
-    @Deprecated(since = "1.21.5", forRemoval = true)
     public RenderElement(final Initializer rendererInitializer) {
         this.bb = new SimpleBufferBuilder(1);
         this.renderer = rendererInitializer.get();
     }
 
-    public RenderElement(Renderer renderer) {
-        this.bb = new SimpleBufferBuilder(1);
-        this.renderer = renderer;
-    }
-
     public boolean render(DisplayContext ctx, int count) {
         this.renderer.accept(bb, ctx, count);
         return this.retireCount == 0 || this.retireCount < count;
@@ -85,7 +75,7 @@ public class RenderElement {
         List<SimpleFont.DisplayText> texts = new ArrayList<>();
         for (int i = messages.size() - 1; i >= 0; i--) {
             final StartupNotificationManager.AgeMessage pair = messages.get(i);
-            final float fade = Math.clamp((4000.0f - (float) pair.age() - ( i - 4 ) * 1000.0f) / 5000.0f, 0.0f, 1.0f);
+            final float fade = clamp((4000.0f - (float) pair.age() - ( i - 4 ) * 1000.0f) / 5000.0f, 0.0f, 1.0f);
             if (fade <0.01f) continue;
             Message msg = pair.message();
             int colour = Math.min((int)(fade * 255f), globalAlpha) << 24 | 0xFFFFFF;
@@ -94,9 +84,19 @@ public class RenderElement {
 
         font.generateVerticesForTexts(10, context.scaledHeight() -  texts.size() * font.lineSpacing() + font.descent() - 10, bb, texts.toArray(SimpleFont.DisplayText[]::new));
     }
+    public static RenderElement monag() {
+        return new RenderElement(RenderElement.initializeTexture("monagstudios.png", 45000, 4, (bb, ctx, sz, frame) -> {
+            var size = 256;
+            var x0 = (ctx.width() - 2 * size) / 2;
+            var y0 = 64;
+            QuadHelper.loadQuad(bb, x0, x0+size, y0, y0+size/2f, 0f, 1f, 0f, 0.5f, 0xFFFFFFFF);
+            QuadHelper.loadQuad(bb, x0+size, x0+2*size, y0, y0+size/2f, 0f, 1f, 0.5f, 1f, 0xFFFFFFFF);
+        }));
+
+    }
 
     public static RenderElement mojang(final int textureId, final int frameStart) {
-        return new RenderElement((bb, ctx, frame) -> {
+        return new RenderElement(()->(bb, ctx, frame) -> {
             var size = 256 * ctx.scale();
             var x0 = (ctx.scaledWidth() - 2 * size) / 2;
             var y0 = 64 * ctx.scale() + 32;
@@ -148,11 +148,11 @@ public class RenderElement {
         }));
     }
     public static RenderElement progressBars(SimpleFont font) {
-        return new RenderElement((bb, ctx, frame) -> RenderElement.startupProgressBars(font, bb, ctx, frame));
+        return new RenderElement(() -> (bb, ctx, frame) -> RenderElement.startupProgressBars(font, bb, ctx, frame));
     }
 
     public static RenderElement performanceBar(SimpleFont font) {
-        return new RenderElement((bb, ctx, frame) -> RenderElement.memoryInfo(font, bb, ctx, frame));
+        return new RenderElement(() -> (bb, ctx, frame) -> RenderElement.memoryInfo(font, bb, ctx, frame));
     }
 
     public static void startupProgressBars(SimpleFont font, final SimpleBufferBuilder buffer, final DisplayContext context, final int frameNumber) {
@@ -187,10 +187,10 @@ public class RenderElement {
     }
     private static float[] indeterminateBar(int frame, boolean isActive) {
         if (RenderElement.globalAlpha != 0xFF || !isActive) {
-            return new float[] { 0f, 1f };
+            return new float[] {0f,1f};
         } else {
-            int progress = frame % 100;
-            return new float[] { Math.clamp((progress - 2) / 100f, 0f, 1f), Math.clamp((progress + 2) / 100f, 0f, 1f) };
+            var progress = frame % 100;
+            return new float[]{clamp((progress - 2) / 100f, 0f, 1f), clamp((progress + 2) / 100f, 0f, 1f)};
         }
     }
 
@@ -249,8 +249,8 @@ public class RenderElement {
         };
     }
 
-    private static Renderer initializeText(SimpleFont font, TextGenerator textGenerator) {
-        return (bb, context, frame) -> renderText(font, textGenerator, bb, context);
+    private static Initializer initializeText(SimpleFont font, TextGenerator textGenerator) {
+        return () -> (bb, context, frame) -> renderText(font, textGenerator, bb, context);
     }
 
     private static void renderText(final SimpleFont font, final TextGenerator textGenerator, final SimpleBufferBuilder bb, final DisplayContext context) {
@@ -264,13 +264,14 @@ public class RenderElement {
     private static TextGenerator text(int x, int y, String text, int colour) {
         return (bb, font, context) -> font.generateVerticesForTexts(x, y, bb, new SimpleFont.DisplayText(text, colour));
     }
-
-    private static Renderer initializeTexture(final String textureFileName, int size, int textureNumber, TextureRenderer positionAndColour) {
-        int[] imgSize = STBHelper.loadTextureFromClasspath(textureFileName, size, GL_TEXTURE0 + textureNumber + INDEX_TEXTURE_OFFSET);
-        return (bb, ctx, frame) -> {
-            ctx.elementShader().updateTextureUniform(textureNumber + INDEX_TEXTURE_OFFSET);
-            ctx.elementShader().updateRenderTypeUniform(ElementShader.RenderType.TEXTURE);
-            renderTexture(bb, ctx, frame, imgSize, positionAndColour);
+    private static Initializer initializeTexture(final String textureFileName, int size, int textureNumber, TextureRenderer positionAndColour) {
+        return ()->{
+            int[] imgSize = STBHelper.loadTextureFromClasspath(textureFileName, size, GL_TEXTURE0 + textureNumber + INDEX_TEXTURE_OFFSET);
+            return (bb, ctx, frame) -> {
+                ctx.elementShader().updateTextureUniform(textureNumber + INDEX_TEXTURE_OFFSET);
+                ctx.elementShader().updateRenderTypeUniform(ElementShader.RenderType.TEXTURE);
+                renderTexture(bb, ctx, frame, imgSize, positionAndColour);
+            };
         };
     }
 
@@ -280,13 +281,21 @@ public class RenderElement {
         bb.draw();
     }
 
-    @Deprecated(since = "1.21.5", forRemoval = true)
+
     public static float clamp(float num, float min, float max) {
-        return Math.clamp(num, min, max);
+        if (num < min) {
+            return min;
+        } else {
+            return Math.min(num, max);
+        }
     }
 
     public static int clamp(int num, int min, int max) {
-        return Math.min(max, Math.max(num, min));
+        if (num < min) {
+            return min;
+        } else {
+            return Math.min(num, max);
+        }
     }
 
     public static int hsvToRGB(float hue, float saturation, float value) {

fmlearlydisplay/src/main/java/net/minecraftforge/fml/earlydisplay/SimpleFont.java

@@ -11,6 +11,8 @@ import org.lwjgl.stb.STBTTFontinfo;
 import org.lwjgl.stb.STBTTPackContext;
 import org.lwjgl.stb.STBTTPackRange;
 import org.lwjgl.stb.STBTTPackedchar;
+import org.lwjgl.system.MemoryStack;
+
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 
@@ -22,8 +24,8 @@ public class SimpleFont {
     private final int textureNumber;
     private final int lineSpacing;
     private final int descent;
-    private static final int GLYPH_COUNT = 127 - 32;
-    private final Glyph[] glyphs;
+    private final int GLYPH_COUNT = 127-32;
+    private Glyph[] glyphs;
 
     private record Glyph(char c, int charwidth, int[] pos, float[] uv) {
         Pos loadQuad(Pos pos, int colour, SimpleBufferBuilder bb) {
@@ -120,7 +122,7 @@ public class SimpleFont {
                 case '\n', '\t' -> 0;
                 case ' ' -> glyphs[0].charwidth();
                 default -> {
-                    if (c - 32 < GLYPH_COUNT && c > 32) {
+                    if (c - 32 < this.GLYPH_COUNT && c > 32) {
                         yield this.glyphs[c - 32].charwidth();
                     } else {
                         yield 0;
@@ -151,7 +153,7 @@ public class SimpleFont {
                     case '\t' -> new Pos(pos.x()+font.glyphs[0].charwidth() * 4, pos.y(), pos.minx());
                     case ' ' -> new Pos(pos.x()+font.glyphs[0].charwidth(), pos.y(), pos.minx());
                     default -> {
-                        if (c-32 < GLYPH_COUNT && c > 32) {
+                        if (c-32 < font.GLYPH_COUNT && c > 32) {
                             pos = font.glyphs[c - 32].loadQuad(pos, colour(), bb);
                         }
                         yield pos;

fmlloader/build.gradle

@@ -5,7 +5,6 @@ plugins {
     id 'maven-publish'
     id 'net.minecraftforge.licenser'
     id 'net.minecraftforge.gradleutils'
-    alias(libs.plugins.apt)
 }
 
 apply from: rootProject.file('build_shared.gradle')
@@ -13,7 +12,7 @@ apply from: rootProject.file('build_shared.gradle')
 configurations.forEach{ it.transitive = false }
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
 
     api(libs.bundles.asm) // Needed by all the black magic
     api(libs.forgespi)
@@ -37,11 +36,10 @@ dependencies {
     implementation(libs.terminalconsoleappender)
     implementation(libs.jimfs)
 
-    // Needed because we have a custom log4j plugin, and they removed package scanning and require a data file to be generated
     implementation(libs.log4j.core)
     annotationProcessor(libs.bundles.log4j)
 
-    testCompileOnly(libs.jetbrains.annotations)
+    testCompileOnly(libs.nulls)
     testRuntimeOnly(libs.bootstrap)
 }
 
@@ -87,7 +85,7 @@ publishing {
             license PomUtils.Licenses.LGPLv2_1
         }
     }
-
+    
     repositories {
         maven gradleutils.publishingForgeMaven
     }
@@ -104,23 +102,5 @@ tasks.register('writeForgeVersionJson') {
 }
 
 tasks.named('generateResources').configure {
-    dependsOn('eclipseJdt')
-    dependsOn('eclipseJdtApt')
-    dependsOn('eclipseFactorypath')
     dependsOn('writeForgeVersionJson')
 }
-
-eclipse {
-    classpath {
-       // We need to set the default output directory for the log4j annotation processor
-       // Ideally we'd just set the value, but the eclipse plugin deduplicates the output directories
-       // So we have to do a hacky whenMerged
-       //defaultOutputDir = file('bin/main')
-       file.whenMerged {
-           entries.each { entry ->
-               if (entry.kind == 'output' && entry.hasProperty('path'))
-                   entry.path = 'bin/main'
-           }
-       }
-    }
-}

fmlloader/src/main/java/net/minecraftforge/fml/common/asm/CapabilityTokenSubclass.java

@@ -49,7 +49,8 @@ public class CapabilityTokenSubclass implements ILaunchPluginService {
     private static final EnumSet<Phase> NAY = EnumSet.noneOf(Phase.class);
 
     @Override
-    public EnumSet<Phase> handlesClass(Type classType, boolean isEmpty) {
+    public EnumSet<Phase> handlesClass(Type classType, boolean isEmpty)
+    {
         if (isEmpty)
             return NAY;
 
@@ -61,33 +62,43 @@ public class CapabilityTokenSubclass implements ILaunchPluginService {
     }
 
     @Override
-    public int processClassWithFlags(final Phase phase, final ClassNode classNode, final Type classType, final String reason) {
-        if (CAP_INJECT.equals(classNode.name)) {
-            for (MethodNode mtd : classNode.methods) {
-                if (FUNC_NAME.equals(mtd.name) && FUNC_DESC.equals(mtd.desc)) {
+    public int processClassWithFlags(final Phase phase, final ClassNode classNode, final Type classType, final String reason)
+    {
+        if (CAP_INJECT.equals(classNode.name))
+        {
+            for (MethodNode mtd : classNode.methods)
+            {
+                if (FUNC_NAME.equals(mtd.name) && FUNC_DESC.equals(mtd.desc))
+                {
                     mtd.access &= ~Opcodes.ACC_FINAL; // We have it final in code so people don't override it, cuz that'd be stupid, and make our transformer more complicated.
                 }
             }
             return ComputeFlags.SIMPLE_REWRITE;
-        } else if (CAP_INJECT.equals(classNode.superName)) {
+        }
+        else if (CAP_INJECT.equals(classNode.superName))
+        {
             Holder cls = new Holder();
 
             SignatureReader reader = new SignatureReader(classNode.signature); // Having a node version of this would probably be useful.
-            reader.accept(new SignatureVisitor(Opcodes.ASM9) {
+            reader.accept(new SignatureVisitor(Opcodes.ASM9)
+            {
                 final Deque<String> stack = new ArrayDeque<>();
 
                 @Override
-                public void visitClassType(final String name) {
+                public void visitClassType(final String name)
+                {
                     stack.push(name);
                 }
 
                 @Override
-                public void visitInnerClassType(final String name) {
+                public void visitInnerClassType(final String name)
+                {
                     stack.push(stack.pop() + '$' + name);
                 }
 
                 @Override
-                public void visitEnd() {
+                public void visitEnd()
+                {
                     var val = stack.pop();
                     if (!stack.isEmpty() && CAP_INJECT.equals(stack.peek()))
                         cls.value = val;
@@ -102,7 +113,9 @@ public class CapabilityTokenSubclass implements ILaunchPluginService {
             mtd.visitInsn(Opcodes.ARETURN);
             mtd.visitEnd();
             return ComputeFlags.COMPUTE_MAXS;
-        } else {
+        }
+        else
+        {
             return ComputeFlags.NO_REWRITE;
         }
     }
@@ -110,4 +123,5 @@ public class CapabilityTokenSubclass implements ILaunchPluginService {
     private static final class Holder {
         String value;
     }
+
 }

fmlloader/src/main/java/net/minecraftforge/fml/common/asm/ObjectHolderDefinalize.java

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) Forge Development LLC and contributors
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+package net.minecraftforge.fml.common.asm;
+
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.Type;
+import org.objectweb.asm.tree.AnnotationNode;
+import org.objectweb.asm.tree.ClassNode;
+import cpw.mods.modlauncher.serviceapi.ILaunchPluginService;
+
+/**
+ * Removes the final modifier from fields with the @ObjectHolder annotation, prevents the JITer from in lining them so our runtime replacements can work.
+ * Will also de-finalize all fields in on class level annotations.
+ */
+public class ObjectHolderDefinalize implements ILaunchPluginService {
+    // Hardcoded map of vanilla classes that should have object holders for each field of the given registry type.
+    // IMPORTANT: Updates to this collection must be reflected in ObjectHolderRegistry. Duplicated cuz classloaders, yay!
+    // Classnames are validated in ObjectHolderRegistry.
+    private static final Map<String, VanillaObjectHolderData> VANILLA_OBJECT_HOLDERS = Stream.of(
+            new VanillaObjectHolderData("net.minecraft.world.level.block.Blocks", "block", "net.minecraft.world.level.block.Block"),
+            new VanillaObjectHolderData("net.minecraft.world.item.Items", "item", "net.minecraft.world.item.Item"),
+            new VanillaObjectHolderData("net.minecraft.world.item.enchantment.Enchantments", "enchantment", "net.minecraft.world.item.enchantment.Enchantment"),
+            new VanillaObjectHolderData("net.minecraft.world.effect.MobEffects", "mob_effect", "net.minecraft.world.effect.MobEffect"),
+            new VanillaObjectHolderData("net.minecraft.core.particles.ParticleTypes", "particle_type", "net.minecraft.core.particles.ParticleType"),
+            new VanillaObjectHolderData("net.minecraft.sounds.SoundEvents", "sound_event", "net.minecraft.sounds.SoundEvent")
+    ).collect(Collectors.toMap(VanillaObjectHolderData::holderClass, Function.identity()));
+    private static final Set<String> VANILLA_OBJECT_HOLDER_CLASSES = VANILLA_OBJECT_HOLDERS.keySet().stream()
+            .map(it -> it.replace('.', '/'))
+            .collect(Collectors.toUnmodifiableSet());
+    private static final String OBJECT_HOLDER = "Lnet/minecraftforge/registries/ObjectHolder;"; //Don't directly reference this to prevent class loading.
+    private static final int PUBLIC_STATIC_FINAL_FLAGS = Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC | Opcodes.ACC_FINAL;
+
+    @Override
+    public String name() {
+        return "object_holder_definalize";
+    }
+
+    private static final EnumSet<Phase> YAY = EnumSet.of(Phase.AFTER);
+    private static final EnumSet<Phase> NAY = EnumSet.noneOf(Phase.class);
+
+    @Override
+    public EnumSet<Phase> handlesClass(Type classType, boolean isEmpty) {
+        if (isEmpty)
+            return NAY;
+
+        // Let's skip processing classes that definitely don't have object holders
+        String internalName = classType.getInternalName();
+
+        // Forge classes that aren't in the debug package (that package is used for tests)
+        if (internalName.startsWith("net/minecraftforge/") && !internalName.substring(18).contains("debug"))
+            return NAY;
+
+        // Vanilla classes that don't have object holders
+        if (internalName.startsWith("com/mojang/"))
+            return NAY;
+
+        // ...except specific ones we added to the VANILLA_OBJECT_HOLDERS map
+        if (internalName.startsWith("net/minecraft/") && !VANILLA_OBJECT_HOLDER_CLASSES.contains(internalName))
+            return NAY;
+
+        return YAY;
+    }
+
+    private boolean hasHolder(List<AnnotationNode> lst) {
+        return lst != null && lst.stream().anyMatch(n -> n.desc.equals(OBJECT_HOLDER));
+    }
+
+    @SuppressWarnings("unused")
+    private String getValue(List<AnnotationNode> lst)
+    {
+        AnnotationNode ann = lst.stream().filter(n -> n.desc.equals(OBJECT_HOLDER)).findFirst().get();
+        if (ann.values != null)
+        {
+            for (int x = 0; x < ann.values.size() - 1; x += 2) {
+                if (ann.values.get(x).equals("value")) {
+                    return (String)ann.values.get(x + 1);
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public int processClassWithFlags(final Phase phase, final ClassNode classNode, final Type classType, final String reason)
+    {
+        final AtomicBoolean changes = new AtomicBoolean();
+        //Must be public static finals, and non-array objects
+
+        //Fix Annotated Fields before injecting from class level
+        classNode.fields.stream().filter(f -> ((f.access & PUBLIC_STATIC_FINAL_FLAGS) == PUBLIC_STATIC_FINAL_FLAGS) && f.desc.startsWith("L") && hasHolder(f.visibleAnnotations)).forEach(f ->
+        {
+            int prev = f.access;
+            f.access &= ~Opcodes.ACC_FINAL; //Strip final
+            f.access |= Opcodes.ACC_SYNTHETIC; //Add Synthetic so we can check in runtime. ? Good idea?
+            changes.compareAndSet(false, prev != f.access);
+        });
+
+        if (VANILLA_OBJECT_HOLDERS.containsKey(classType.getClassName())) //Class level, de-finalize all fields and add @ObjectHolder to them!
+        {
+            classNode.fields.stream().filter(f -> ((f.access & PUBLIC_STATIC_FINAL_FLAGS) == PUBLIC_STATIC_FINAL_FLAGS) && f.desc.startsWith("L")).forEach(f ->
+            {
+                int prev = f.access;
+                f.access &= ~Opcodes.ACC_FINAL;
+                f.access |= Opcodes.ACC_SYNTHETIC;
+                /*if (!hasHolder(f.visibleAnnotations)) //Add field level annotation, doesn't do anything until after we figure out how ASMDataTable is gatherered
+                {
+                   if (value == null)
+                       f.visitAnnotation(OBJECT_HOLDER, true);
+                   else
+                       f.visitAnnotation(OBJECT_HOLDER, true).visit("value", value + ":" + f.name.toLowerCase());
+                }*/
+                changes.compareAndSet(false, prev != f.access);
+            });
+        }
+        return changes.get() ? ComputeFlags.SIMPLE_REWRITE : ComputeFlags.NO_REWRITE;
+    }
+
+    private record VanillaObjectHolderData(String holderClass, String registryName, String registryType) {}
+}

fmlloader/src/main/java/net/minecraftforge/fml/common/asm/RuntimeEnumExtender.java

@@ -7,9 +7,9 @@ package net.minecraftforge.fml.common.asm;
 
 import java.util.EnumSet;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import com.mojang.logging.LogUtils;
-import net.minecraftforge.fml.loading.LoadingModList;
 import org.objectweb.asm.Label;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.Type;
@@ -47,21 +47,16 @@ public class RuntimeEnumExtender implements ILaunchPluginService {
     private static final EnumSet<Phase> YAY = EnumSet.of(Phase.AFTER);
     private static final EnumSet<Phase> NAY = EnumSet.noneOf(Phase.class);
 
-    private static final class LazyInit {
-        private LazyInit() {}
-        private static final boolean ANY_MODS = LoadingModList.get().getMods().size() > 2; // 2: forge, minecraft
-    }
-
     @Override
     public EnumSet<Phase> handlesClass(Type classType, boolean isEmpty) {
-        if (isEmpty || !LazyInit.ANY_MODS)
+        if (isEmpty)
             return NAY;
 
         String internalName = classType.getInternalName();
-        if (internalName.startsWith("net/minecraft/client/model") || internalName.startsWith("net/minecraft/world"))
-            return YAY;
+        if (internalName.startsWith("net/minecraftforge/") || internalName.startsWith("com/mojang/"))
+            return NAY;
 
-        return NAY;
+        return YAY;
     }
 
     @Override

fmlloader/src/main/java/net/minecraftforge/fml/loading/BackgroundWaiter.java

@@ -6,13 +6,14 @@
 package net.minecraftforge.fml.loading;
 
 import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
 
 public class BackgroundWaiter {
+    private static final ExecutorService runner = Executors.newSingleThreadExecutor();
 
     public static void runAndTick(Runnable r, Runnable tick) {
-        var runner = Executors.newSingleThreadExecutor();
         ImmediateWindowHandler.updateProgress("Loading bootstrap resources");
         final Future<?> work = runner.submit(r);
         do {

fmlloader/src/main/java/net/minecraftforge/fml/loading/FMLLoader.java

@@ -17,9 +17,11 @@ import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.fml.loading.targets.CommonLaunchHandler;
 import net.minecraftforge.forgespi.Environment;
 import net.minecraftforge.forgespi.coremod.ICoreModProvider;
+import org.apache.commons.lang3.tuple.Pair;
 import org.slf4j.Logger;
 
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -34,6 +36,7 @@ import static net.minecraftforge.fml.loading.LogMarkers.SCAN;
 public class FMLLoader {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static AccessTransformerService accessTransformer;
+    private static ModDiscoverer modDiscoverer;
     private static ICoreModProvider coreModProvider;
     private static LanguageLoadingProvider languageLoadingProvider;
     private static Dist dist;
@@ -54,11 +57,15 @@ public class FMLLoader {
         LOGGER.debug(CORE, "Detected version data : {}", versionInfo);
         LOGGER.debug(CORE, "FML {} loading", LauncherVersion.getVersion());
 
+        // Allows us to communicate properties with other services through ModLauncher
+        setupBlackboardKeys();
+
         checkPackage(ITransformationService.class, "4.0", "ModLauncher");
         accessTransformer  = getPlugin(env, "accesstransformer",  "1.0", "AccessTransformer");
+        /*eventBus       =*/ getPlugin(env, "eventbus",           "1.0", "EventBus");
         runtimeDistCleaner = getPlugin(env, "runtimedistcleaner", "1.0", "RuntimeDistCleaner");
         coreModProvider = getSingleService(ICoreModProvider.class, "CoreMod");
-        LOGGER.debug(CORE, "FML found CoreMod version : {}", JarVersionLookupHandler.getInfo(coreModProvider.getClass()).impl().version().orElse("MISSING"));
+        LOGGER.debug(CORE,"FML found CoreMod version : {}", JarVersionLookupHandler.getInfo(coreModProvider.getClass()).impl().version().orElse("MISSING"));
         checkPackage(Environment.class, "2.0", "ForgeSPI");
 
         try {
@@ -70,15 +77,14 @@ public class FMLLoader {
         }
     }
 
-    @SuppressWarnings("unchecked")
     private static <T> T getPlugin(IEnvironment env, String id, String version, String name) throws IncompatibleEnvironmentException {
-        var plugin = env.findLaunchPlugin(id).orElse(null);
-        if (plugin == null) {
+        @SuppressWarnings("unchecked")
+        var plugin = (T)env.findLaunchPlugin(id).orElseThrow(() -> {
             LOGGER.error(CORE, "{} library is missing, we need this to run", name);
-            throw new IncompatibleEnvironmentException("Missing " + name + ", cannot run");
-        }
+            return new IncompatibleEnvironmentException("Missing " + name + ", cannot run");
+        });
         checkPackage(plugin.getClass(), version, name);
-        return (T) plugin;
+        return plugin;
     }
 
     private static void checkPackage(Class<?> cls, String version, String name) throws IncompatibleEnvironmentException {
@@ -117,6 +123,12 @@ public class FMLLoader {
           return providers.get(0);
     }
 
+    private static void setupBlackboardKeys() {
+        LOGGER.debug(CORE, "Requesting CoreMods to not apply the fix for ASMAPI.findFirstInstructionBefore by default");
+        var blackboardKey = TypesafeMap.Key.getOrCreate(Launcher.INSTANCE.blackboard(), "coremods.use_old_findFirstInstructionBefore", Boolean.class);
+        Launcher.INSTANCE.blackboard().<Boolean>computeIfAbsent(blackboardKey, k -> true);
+    }
+
     static void setupLaunchHandler(final IEnvironment environment, final Map<String, Object> arguments) {
         final String launchTarget = environment.getProperty(IEnvironment.Keys.LAUNCHTARGET.get()).orElse("MISSING");
         arguments.put("launchTarget", launchTarget);
@@ -134,20 +146,20 @@ public class FMLLoader {
         }
         commonLaunchHandler = (CommonLaunchHandler)launchHandler.get();
         launchHandlerName = launchHandler.get().name();
-        gamePath = environment.getProperty(IEnvironment.Keys.GAMEDIR.get()).orElse(Path.of(".").toAbsolutePath());
+        gamePath = environment.getProperty(IEnvironment.Keys.GAMEDIR.get()).orElse(Paths.get(".").toAbsolutePath());
 
         naming = commonLaunchHandler.getNaming();
         dist = commonLaunchHandler.getDist();
         production = commonLaunchHandler.isProduction();
 
-        accessTransformer.getExtension().accept(Map.entry(naming, "srg"));
+        accessTransformer.getExtension().accept(Pair.of(naming, "srg"));
 
         runtimeDistCleaner.getExtension().accept(dist);
     }
 
     public static List<ITransformationService.Resource> beginModScan(final Map<String,?> arguments) {
         LOGGER.debug(SCAN,"Scanning for Mod Locators");
-        var modDiscoverer = new ModDiscoverer(arguments);
+        modDiscoverer = new ModDiscoverer(arguments);
         modValidator = modDiscoverer.discoverMods();
         var pluginResources = modValidator.getPluginResources();
         return List.of(pluginResources);
@@ -169,6 +181,10 @@ public class FMLLoader {
         return languageLoadingProvider;
     }
 
+    static ModDiscoverer getModDiscoverer() {
+        return modDiscoverer;
+    }
+
     public static CommonLaunchHandler getLaunchHandler() {
         return commonLaunchHandler;
     }

fmlloader/src/main/java/net/minecraftforge/fml/loading/FMLServiceProvider.java

@@ -7,6 +7,7 @@ package net.minecraftforge.fml.loading;
 
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.api.*;
+import joptsimple.OptionSpecBuilder;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.forgespi.Environment;
 import org.jetbrains.annotations.NotNull;
@@ -18,11 +19,12 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
+import java.util.function.BiFunction;
 import static net.minecraftforge.fml.loading.LogMarkers.CORE;
 
 public class FMLServiceProvider implements ITransformationService {
     private static final Logger LOGGER = LogUtils.getLogger();
-    private final Map<String, Object> arguments = new HashMap<>();
+    private Map<String, Object> arguments;
 
     public FMLServiceProvider() {
         var markers = System.getProperty("forge.logging.markers", "").split(",");
@@ -43,6 +45,7 @@ public class FMLServiceProvider implements ITransformationService {
         FMLConfig.load();
         LOGGER.debug(CORE, "Preparing ModFile");
         environment.computePropertyIfAbsent(Environment.Keys.MODFILEFACTORY.get(), k->ModFile::new);
+        arguments = new HashMap<>();
         LOGGER.debug(CORE, "Preparing launch handler");
         FMLLoader.setupLaunchHandler(environment, arguments);
         FMLEnvironment.setupInteropEnvironment(environment);
@@ -65,6 +68,14 @@ public class FMLServiceProvider implements ITransformationService {
         FMLLoader.onInitialLoad(environment, otherServices);
     }
 
+    @Override
+    public void arguments(BiFunction<String, String, OptionSpecBuilder> argumentBuilder) {
+    }
+
+    @Override
+    public void argumentValues(OptionResult option) {
+    }
+
     @SuppressWarnings("rawtypes")
     @Override
     public @NotNull List<ITransformer> transformers() {

fmlloader/src/main/java/net/minecraftforge/fml/loading/ImmediateWindowHandler.java

@@ -140,7 +140,7 @@ public class ImmediateWindowHandler {
 
         @Override
         public void updateModuleReads(final ModuleLayer layer) {
-            var fm = layer.findModule("net.minecraftforge.forge");
+            var fm = layer.findModule("forge");
             if (fm.isPresent()) {
                 getClass().getModule().addReads(fm.get());
                 var clz = fm.map(l -> Class.forName(l, "net.minecraftforge.client.loading.NoVizFallback")).orElseThrow();

fmlloader/src/main/java/net/minecraftforge/fml/loading/LoadingModList.java

@@ -5,25 +5,31 @@
 
 package net.minecraftforge.fml.loading;
 
+import cpw.mods.modlauncher.api.LamdbaExceptionUtils;
 import net.minecraftforge.fml.loading.moddiscovery.BackgroundScanHandler;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.fml.loading.moddiscovery.ModFileInfo;
 import net.minecraftforge.fml.loading.moddiscovery.ModInfo;
 import net.minecraftforge.forgespi.locating.IModFile;
 
+import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Enumeration;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.stream.Collectors;
 
 /**
  * Master list of all mods <em>in the loading context. This class cannot refer outside the
  * loading package</em>
  */
-public class LoadingModList {
+public class LoadingModList
+{
     private static LoadingModList INSTANCE;
     private final List<ModFileInfo> modFiles;
     private final List<ModInfo> sortedList;
@@ -31,14 +37,15 @@ public class LoadingModList {
     private final List<EarlyLoadingException> preLoadErrors;
     private List<IModFile> brokenFiles;
 
-    private LoadingModList(final List<ModFile> modFiles, final List<ModInfo> sortedList) {
+    private LoadingModList(final List<ModFile> modFiles, final List<ModInfo> sortedList)
+    {
         this.modFiles = modFiles.stream()
                 .map(ModFile::getModFileInfo)
                 .map(ModFileInfo.class::cast)
-                .toList();
+                .collect(Collectors.toList());
         this.sortedList = sortedList.stream()
                 .map(ModInfo.class::cast)
-                .toList();
+                .collect(Collectors.toList());
         this.fileById = this.modFiles.stream()
                 .map(ModFileInfo::getMods)
                 .flatMap(Collection::stream)
@@ -47,18 +54,21 @@ public class LoadingModList {
         this.preLoadErrors = new ArrayList<>();
     }
 
-    public static LoadingModList of(List<ModFile> modFiles, List<ModInfo> sortedList, final EarlyLoadingException earlyLoadingException) {
+    public static LoadingModList of(List<ModFile> modFiles, List<ModInfo> sortedList, final EarlyLoadingException earlyLoadingException)
+    {
         INSTANCE = new LoadingModList(modFiles, sortedList);
         if (earlyLoadingException != null)
+        {
             INSTANCE.preLoadErrors.add(earlyLoadingException);
+        }
         return INSTANCE;
     }
 
     public static LoadingModList get() {
         return INSTANCE;
     }
-
-    public void addCoreMods() {
+    public void addCoreMods()
+    {
         modFiles.stream()
                 .map(ModFileInfo::getFile)
                 .map(ModFile::getCoreMods)
@@ -66,28 +76,28 @@ public class LoadingModList {
                 .forEach(FMLLoader.getCoreModProvider()::addCoreMod);
     }
 
-    public void addAccessTransformers() {
-        for (ModFileInfo modFile : modFiles) {
-            ModFile mod = modFile.getFile();
-            var at = mod.getAccessTransformer().orElse(null);
-            if (at != null) {
-                FMLLoader.addAccessTransformer(at, mod);
-            }
-        }
+    public void addAccessTransformers()
+    {
+        modFiles.stream()
+                .map(ModFileInfo::getFile)
+                .forEach(mod -> mod.getAccessTransformer().ifPresent(path -> FMLLoader.addAccessTransformer(path, mod)));
     }
 
-    public void addForScanning(BackgroundScanHandler backgroundScanHandler) {
+    public void addForScanning(BackgroundScanHandler backgroundScanHandler)
+    {
         backgroundScanHandler.setLoadingModList(this);
         modFiles.stream()
                 .map(ModFileInfo::getFile)
                 .forEach(backgroundScanHandler::submitForScanning);
     }
 
-    public List<ModFileInfo> getModFiles() {
+    public List<ModFileInfo> getModFiles()
+    {
         return modFiles;
     }
 
-    public Path findResource(final String className) {
+    public Path findResource(final String className)
+    {
         for (ModFileInfo mf : modFiles) {
             final Path resource = mf.getFile().findResource(className);
             if (Files.exists(resource)) return resource;
@@ -95,11 +105,55 @@ public class LoadingModList {
         return null;
     }
 
-    public ModFileInfo getModFileById(String modid) {
+    public Enumeration<URL> findAllURLsForResource(final String resName) {
+        final String resourceName;
+        // strip a leading slash
+        if (resName.startsWith("/")) {
+            resourceName = resName.substring(1);
+        } else {
+            resourceName = resName;
+        }
+        return new Enumeration<URL>() {
+            private final Iterator<ModFileInfo> modFileIterator = modFiles.iterator();
+            private URL next;
+            @Override
+            public boolean hasMoreElements() {
+                if (next!=null) return true;
+                next = findNextURL();
+                return next != null;
+            }
+
+            @Override
+            public URL nextElement() {
+                if (next == null) {
+                    next = findNextURL();
+                    if (next == null) throw new NoSuchElementException();
+                }
+                URL result = next;
+                next = null;
+                return result;
+            }
+
+            private URL findNextURL() {
+                while (modFileIterator.hasNext()) {
+                    final ModFileInfo next = modFileIterator.next();
+                    final Path resource = next.getFile().findResource(resourceName);
+                    if (Files.exists(resource)) {
+                        return LamdbaExceptionUtils.uncheck(()->new URL("modjar://" + next.getMods().get(0).getModId() + "/" + resourceName));
+                    }
+                }
+                return null;
+            }
+        };
+    }
+
+    public ModFileInfo getModFileById(String modid)
+    {
         return this.fileById.get(modid);
     }
 
-    public List<ModInfo> getMods() {
+    public List<ModInfo> getMods()
+    {
         return this.sortedList;
     }
 

fmlloader/src/main/java/net/minecraftforge/fml/loading/MCPNamingService.java

@@ -36,7 +36,7 @@ public class MCPNamingService implements INameMappingService {
 
     @Override
     public Map.Entry<String, String> understanding() {
-        return Map.entry("srg", "mcp");
+        return Pair.of("srg", "mcp");
     }
 
     @Override

fmlloader/src/main/java/net/minecraftforge/fml/loading/MavenCoordinateResolver.java

@@ -34,7 +34,7 @@ public class MavenCoordinateResolver {
                 (!extension.isEmpty() ? "." + extension : ".jar");
 
         String[] groups = groupId.split("\\.");
-        Path result = Path.of(groups[0]);
+        Path result = Paths.get(groups[0]);
         for (int i = 1; i < groups.length; i++) {
             result = result.resolve(groups[i]);
         }

fmlloader/src/main/java/net/minecraftforge/fml/loading/ModSorter.java

@@ -8,7 +8,7 @@ package net.minecraftforge.fml.loading;
 import com.google.common.graph.GraphBuilder;
 import com.google.common.graph.MutableGraph;
 import com.mojang.logging.LogUtils;
-import net.minecraftforge.forgespi.language.IModInfo.ModVersion;
+import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.fml.loading.EarlyLoadingException.ExceptionData;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.fml.loading.moddiscovery.ModFileInfo;
@@ -20,250 +20,229 @@ import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
-import java.util.Collection;
+import java.util.Collections;
 import java.util.Comparator;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import static java.util.stream.Collectors.*;
 import static net.minecraftforge.fml.loading.LogMarkers.LOADING;
 
-public class ModSorter {
+public class ModSorter
+{
     private static final Logger LOGGER = LogUtils.getLogger();
+    private final UniqueModListBuilder uniqueModListBuilder;
+    private List<ModFile> modFiles;
+    private List<ModInfo> sortedList;
+    private Map<String, IModInfo> modIdNameLookup;
+    private List<ModFile> systemMods;
 
-    private record State(List<ModFile> files, List<ModInfo> mods) {}
-
-    private ModSorter() {}
-
-    @SuppressWarnings("removal")
-    public static LoadingModList sort(List<ModFile> mods, final List<ExceptionData> errors) {
-        State systemMods = detectSystemMods(mods);
-        List<ModFile> modFiles;
+    private ModSorter(final List<ModFile> modFiles)
+    {
+        this.uniqueModListBuilder = new UniqueModListBuilder(modFiles);
+    }
 
+    public static LoadingModList sort(List<ModFile> mods, final List<ExceptionData> errors)
+    {
+        final ModSorter ms = new ModSorter(mods);
         try {
-            modFiles = new UniqueModListBuilder(mods).buildUniqueList().modFiles();
+            ms.buildUniqueList();
         } catch (EarlyLoadingException e) {
             // We cannot build any list with duped mods. We have to abort immediately and report it
             // Note this will never actually throw an error because the duplicate checks are done in ModDiscovererer before we get to this phase
             // So all this is really doing is wasting time.
             // But i'm leaving it here until I rewrite all of cpw's mod loading code because its such a clusterfuck.
-            return LoadingModList.of(systemMods.files(), systemMods.mods(), e);
+            return LoadingModList.of(ms.systemMods, ms.systemMods.stream().map(mf->(ModInfo)mf.getModInfos().get(0)).collect(toList()), e);
         }
-
-        var named = new HashMap<String, ModInfo>();
-        for (var file : modFiles) {
-            for (var info : file.getModInfos())
-                named.put(info.getModId(), (ModInfo)info);
-        }
-
         // try and validate dependencies
-        final List<ExceptionData> failedList = Stream.concat(verifyDependencyVersions(modFiles).stream(), errors.stream()).toList();
-
+        final List<ExceptionData> failedList = Stream.concat(ms.verifyDependencyVersions().stream(), errors.stream()).toList();
         // if we miss one or the other, we abort now
         if (!failedList.isEmpty()) {
-            return LoadingModList.of(systemMods.files(), systemMods.mods(), new EarlyLoadingException("failure to validate mod list", null, failedList));
+            return LoadingModList.of(ms.systemMods, ms.systemMods.stream().map(mf->(ModInfo)mf.getModInfos().get(0)).collect(toList()), new EarlyLoadingException("failure to validate mod list", null, failedList));
         } else {
             // Otherwise, lets try and sort the modlist and proceed
+            EarlyLoadingException earlyLoadingException = null;
             try {
-                var sorted = sort(modFiles, named);
-                return LoadingModList.of(sorted.files(), sorted.mods(), null);
+                ms.sort();
             } catch (EarlyLoadingException e) {
-                // The only exception that can happen here is a cyclic exception, but fall back to system mods so we can display the nice screen.
-                return LoadingModList.of(systemMods.files(), systemMods.mods(), e);
+                earlyLoadingException = e;
             }
+            return LoadingModList.of(ms.modFiles, ms.sortedList, earlyLoadingException);
         }
     }
 
-    private static State sort(final List<ModFile> modFiles, final Map<String, ModInfo> named) {
-        final MutableGraph<ModInfo> graph = GraphBuilder.directed().build();
+    private void sort()
+    {
+        // lambdas are identity based, so sorting them is impossible unless you hold reference to them
+        final MutableGraph<ModFileInfo> graph = GraphBuilder.directed().build();
+        AtomicInteger counter = new AtomicInteger();
+        Map<ModFileInfo, Integer> infos = modFiles.stream()
+                .map(ModFile::getModFileInfo)
+                .filter(ModFileInfo.class::isInstance)
+                .map(ModFileInfo.class::cast)
+                .collect(toMap(Function.identity(), e -> counter.incrementAndGet()));
+        infos.keySet().forEach(graph::addNode);
+        modFiles.stream()
+                .map(ModFile::getModInfos)
+                .<IModInfo>mapMulti(Iterable::forEach)
+                .map(IModInfo::getDependencies)
+                .<IModInfo.ModVersion>mapMulti(Iterable::forEach)
+                .forEach(dep -> addDependency(graph, dep));
 
-        int counter = 0;
-        var infos = new HashMap<ModInfo, Integer>();
-        for (var file : modFiles) {
-            if (file.getModFileInfo() instanceof ModFileInfo info) {
-                for (var imod : info.getMods()) {
-                    var mod = (ModInfo)imod;
-                    infos.put(mod, counter++);
-                    graph.addNode(mod);
-                }
-            }
-        }
-
-        for (var file : modFiles) {
-            for (var info : file.getModInfos()) {
-                for (var dep : info.getDependencies()) {
-                    // Ordering isn't effected by sides, should it be?
-                    //if (!dep.getSide().isCorrectSide())
-                    //    continue;
-
-                    var target = named.get(dep.getModId());
-
-                    // soft dep that doesn't exist. No edge required.
-                    if (target == null)
-                        continue;
-
-                    var self = (ModInfo)dep.getOwner();
-
-                    switch (dep.getOrdering()) {
-                        case BEFORE -> graph.putEdge(self, target);
-                        case AFTER -> graph.putEdge(target, self);
-                        default -> {}
-                    }
-                }
-            }
-        }
-
-        final List<ModInfo> sorted;
-        try {
+        final List<ModFileInfo> sorted;
+        try
+        {
             sorted = TopologicalSort.topologicalSort(graph, Comparator.comparing(infos::get));
-        } catch (CyclePresentException e) {
-            Set<Set<ModInfo>> cycles = e.getCycles();
-            var buf = new StringBuilder();
-            buf.append("Mod Sorting failed - Detected Cycles: \n");
-
-            var dataList = new ArrayList<ExceptionData>();
-            for (var cycle : cycles) {
-                buf.append("\tCycle:\n");
-                for (var mod : cycle) {
-                    var modDeps = new StringBuilder()
-                        .append(mod.getModId())
-                        .append(' ')
-                        .append(mod.getDependencies().stream()
-                            .filter(v -> cycle.stream().anyMatch(m -> m.getModId().equals(v.getModId())))
-                            .map(dep -> dep.getOrdering().name() + " " + dep.getModId())
-                            .collect(Collectors.joining(", "))
-                        );
-                    dataList.add(new ExceptionData("fml.modloading.cycle", modDeps.toString()));
-                    buf.append("\t\tMod: ").append(modDeps.toString()).append('\n');
-                }
+        }
+        catch (CyclePresentException e)
+        {
+            Set<Set<ModFileInfo>> cycles = e.getCycles();
+            if (LOGGER.isErrorEnabled(LOADING))
+            {
+                LOGGER.error(LOADING, "Mod Sorting failed.\nDetected Cycles: {}\n", cycles);
             }
-
-            LOGGER.error(LOADING, buf.toString());
-
+            var dataList = cycles.stream()
+                    .<ModFileInfo>mapMulti(Iterable::forEach)
+                    .<IModInfo>mapMulti((mf,c)->mf.getMods().forEach(c))
+                    .map(IModInfo::getModId)
+                    .map(list -> new ExceptionData("fml.modloading.cycle", list))
+                    .toList();
             throw new EarlyLoadingException("Sorting error", e, dataList);
         }
-
-        var files = new LinkedHashSet<ModFile>();
-        var list = new ArrayList<ModInfo>();
-
-        for (var mod : sorted) {
-            files.add(mod.getOwningFile().getFile());
-            list.add(mod);
-        }
-
-        return new State(files.stream().toList(), list);
+        this.sortedList = sorted.stream()
+                .map(ModFileInfo::getMods)
+                .<IModInfo>mapMulti(Iterable::forEach)
+                .map(ModInfo.class::cast)
+                .collect(toList());
+        this.modFiles = sorted.stream()
+                .map(ModFileInfo::getFile)
+                .collect(toList());
     }
 
-    private static State detectSystemMods(final List<ModFile> modFiles) {
+    private void addDependency(MutableGraph<ModFileInfo> topoGraph, IModInfo.ModVersion dep)
+    {
+        final ModFileInfo self = (ModFileInfo)dep.getOwner().getOwningFile();
+        final IModInfo targetModInfo = modIdNameLookup.get(dep.getModId());
+        // soft dep that doesn't exist. Just return. No edge required.
+        if (targetModInfo == null || !(targetModInfo.getOwningFile() instanceof final ModFileInfo target)) return;
+        if (self == target)
+            return; // in case a jar has two mods that have dependencies between
+        switch (dep.getOrdering()) {
+            case BEFORE -> topoGraph.putEdge(self, target);
+            case AFTER -> topoGraph.putEdge(target, self);
+            default -> {}
+        }
+    }
+
+    private void buildUniqueList()
+    {
+        final UniqueModListBuilder.UniqueModListData uniqueModListData = uniqueModListBuilder.buildUniqueList();
+
+        this.modFiles = uniqueModListData.modFiles();
+
+        detectSystemMods(uniqueModListData.modFilesByFirstId());
+
+        modIdNameLookup = uniqueModListData.modFilesByFirstId().entrySet().stream()
+                .filter(e -> !e.getValue().get(0).getModInfos().isEmpty())
+                .collect(Collectors.toMap(
+                    Map.Entry::getKey,
+                    e -> e.getValue().get(0).getModInfos().get(0)
+                  ));
+    }
+
+    private void detectSystemMods(final Map<String, List<ModFile>> modFilesByFirstId) {
         // Capture system mods (ex. MC, Forge) here, so we can keep them for later
         var systemMods = List.of("minecraft", "forge");
         LOGGER.debug("Configured system mods: {}", systemMods);
 
-        var mods = new ArrayList<ModInfo>();
-        var files = new ArrayList<ModFile>();
+        this.systemMods = new ArrayList<>();
         for (var systemMod : systemMods) {
-            var mod = findMod(modFiles, systemMod);
-            if (mod == null)
+            var container = modFilesByFirstId.get(systemMod);
+            if (container != null && !container.isEmpty()) {
+                LOGGER.debug("Found system mod: {}", systemMod);
+                this.systemMods.add((ModFile) container.get(0));
+            } else {
                 throw new IllegalStateException("Failed to find system mod: " + systemMod);
-
-            LOGGER.debug("Found system mod: {}", systemMod);
-            mods.add(mod.info());
-            files.add(mod.file());
-        }
-
-        return new State(files, mods);
-    }
-
-    private record ModPair(ModFile file, ModInfo info) {}
-    private static ModPair findMod(final List<ModFile> modFiles, String name) {
-        for (var file : modFiles) {
-            for (var mod : file.getModFileInfo().getMods()) {
-                if (name.equals(mod.getModId()))
-                    return new ModPair(file, (ModInfo)mod);
             }
         }
-        return null;
     }
 
-    private static List<ExceptionData> verifyDependencyVersions(final List<ModFile> files) {
-        final var modVersions = new HashMap<String, ArtifactVersion>();
-        final var modRequirements = new HashSet<ModVersion>();
-        int mandatoryRequired = 0;
+    private List<EarlyLoadingException.ExceptionData> verifyDependencyVersions()
+    {
+        final var modVersions = modFiles.stream()
+                .map(ModFile::getModInfos)
+                .<IModInfo>mapMulti(Iterable::forEach)
+                .collect(toMap(IModInfo::getModId, IModInfo::getVersion));
 
-        for (var file : files) {
-            for (var info : file.getModInfos()) {
-                modVersions.put(info.getModId(), info.getVersion());
-                for (var dep : info.getDependencies()) {
-                    if (dep.getSide().isCorrectSide()) {
-                        if (modRequirements.add(dep) && dep.isMandatory())
-                            mandatoryRequired++;
-                    }
-                }
-            }
-        }
+        final var modVersionDependencies = modFiles.stream()
+                .map(ModFile::getModInfos)
+                .<IModInfo>mapMulti(Iterable::forEach)
+                .collect(groupingBy(Function.identity(), flatMapping(e -> e.getDependencies().stream(), toList())));
 
+        final var modRequirements = modVersionDependencies.values().stream()
+                .<IModInfo.ModVersion>mapMulti(Iterable::forEach)
+                .filter(mv -> mv.getSide().isCorrectSide())
+                .collect(toSet());
+
+        final long mandatoryRequired = modRequirements.stream().filter(IModInfo.ModVersion::isMandatory).count();
         LOGGER.debug(LOADING, "Found {} mod requirements ({} mandatory, {} optional)", modRequirements.size(), mandatoryRequired, modRequirements.size() - mandatoryRequired);
+        final var missingVersions = modRequirements.stream()
+                .filter(mv -> (mv.isMandatory() || modVersions.containsKey(mv.getModId())) && this.modVersionNotContained(mv, modVersions))
+                .collect(toSet());
+        final long mandatoryMissing = missingVersions.stream().filter(IModInfo.ModVersion::isMandatory).count();
+        LOGGER.debug(LOADING, "Found {} mod requirements missing ({} mandatory, {} optional)", missingVersions.size(), mandatoryMissing, missingVersions.size() - mandatoryMissing);
 
-        final var missingMandatory = new HashSet<ModVersion>();
-        final var missingOptional = new HashSet<ModVersion>();
+        if (!missingVersions.isEmpty()) {
+            if (mandatoryMissing > 0) {
+                LOGGER.error(
+                        LOADING,
+                        "Missing or unsupported mandatory dependencies:\n{}",
+                        missingVersions.stream()
+                                .filter(IModInfo.ModVersion::isMandatory)
+                                .map(ver -> formatDependencyError(ver, modVersions))
+                                .collect(Collectors.joining("\n"))
+                );
+            }
+            if (missingVersions.size() - mandatoryMissing > 0) {
+                LOGGER.error(
+                        LOADING,
+                        "Unsupported installed optional dependencies:\n{}",
+                        missingVersions.stream()
+                                .filter(ver -> !ver.isMandatory())
+                                .map(ver -> formatDependencyError(ver, modVersions))
+                                .collect(Collectors.joining("\n"))
+                );
+            }
 
-        for (var dep : modRequirements) {
-            var modId = dep.getModId();
-            var existing = modVersions.get(modId);
-
-            if (!dep.isMandatory() && existing == null)
-                continue;
-
-            var range = dep.getVersionRange();
-            if (existing != null && (range.containsVersion(existing) || "0.0NONE".equals(existing.toString())))
-                continue;
-
-            if (!VersionSupportMatrix.testVersionSupportMatrix(range, modId, "mod"))
-                (dep.isMandatory() ? missingMandatory : missingOptional).add(dep);
+            return missingVersions.stream()
+                    .map(mv -> new ExceptionData(mv.isMandatory() ? "fml.modloading.missingdependency" : "fml.modloading.missingdependency.optional",
+                            mv.getOwner(), mv.getModId(), mv.getOwner().getModId(), mv.getVersionRange(),
+                            modVersions.getOrDefault(mv.getModId(), new DefaultArtifactVersion("null"))))
+                    .toList();
         }
-
-
-        LOGGER.debug(LOADING, "Found {} mod requirements missing ({} mandatory, {} optional)", missingMandatory.size() + missingOptional.size(), missingMandatory.size(), missingOptional.size());
-
-        var ret = new ArrayList<ExceptionData>();
-
-        if (!missingMandatory.isEmpty()) {
-            LOGGER.error(LOADING, "Missing or unsupported mandatory dependencies:\n{}", formatDependencyError(missingMandatory, modVersions));
-            for (var mv : missingMandatory)
-                ret.add(data(mv, modVersions, "fml.modloading.missingdependency"));
-        }
-
-        if (!missingOptional.isEmpty()) {
-            LOGGER.error(LOADING, "Unsupported installed optional dependencies:\n{}", formatDependencyError(missingMandatory, modVersions));
-            for (var mv : missingMandatory)
-                ret.add(data(mv, modVersions, "fml.modloading.missingdependency.optional"));
-        }
-
-        return ret;
+        return Collections.emptyList();
     }
 
-    private static String formatDependencyError(Collection<ModVersion> missing, Map<String, ArtifactVersion> modVersions) {
-        var ret = new ArrayList<String>();
-        for (var dep : missing) {
-            var installed = modVersions.get(dep.getModId());
-            ret.add(String.format(
+    private static String formatDependencyError(IModInfo.ModVersion dependency, Map<String, ArtifactVersion> modVersions)
+    {
+        ArtifactVersion installed = modVersions.get(dependency.getModId());
+        return String.format(
                 "\tMod ID: '%s', Requested by: '%s', Expected range: '%s', Actual version: '%s'",
-                dep.getModId(),
-                dep.getOwner().getModId(),
-                dep.getVersionRange(),
+                dependency.getModId(),
+                dependency.getOwner().getModId(),
+                dependency.getVersionRange(),
                 installed != null ? installed.toString() : "[MISSING]"
-            ));
-        }
-        return String.join("\n", ret);
+        );
     }
 
-    private static final ArtifactVersion NULL_VERSION = new DefaultArtifactVersion("null");
-    private static ExceptionData data(ModVersion mv, Map<String, ArtifactVersion> modVersions, String key) {
-        return new ExceptionData(key, mv.getOwner(), mv.getModId(), mv.getOwner().getModId(), mv.getVersionRange(), modVersions.getOrDefault(mv.getModId(), NULL_VERSION));
+    private boolean modVersionNotContained(final IModInfo.ModVersion mv, final Map<String, ArtifactVersion> modVersions)
+    {
+        return !(VersionSupportMatrix.testVersionSupportMatrix(mv.getVersionRange(), mv.getModId(), "mod", (modId, range) -> modVersions.containsKey(modId) &&
+                (range.containsVersion(modVersions.get(modId)) || modVersions.get(modId).toString().equals("0.0NONE"))));
     }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/RuntimeDistCleaner.java

@@ -8,8 +8,14 @@ package net.minecraftforge.fml.loading;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.EnumSet;
+import java.util.Iterator;
 import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
+
+import com.google.common.collect.Streams;
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.serviceapi.ILaunchPluginService;
 import net.minecraftforge.api.distmarker.Dist;
@@ -22,22 +28,203 @@ import org.objectweb.asm.Type;
 import org.objectweb.asm.tree.AbstractInsnNode;
 import org.objectweb.asm.tree.AnnotationNode;
 import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.FieldNode;
 import org.objectweb.asm.tree.MethodNode;
 import org.slf4j.Logger;
 import org.slf4j.Marker;
 import org.slf4j.MarkerFactory;
 
-public class RuntimeDistCleaner implements ILaunchPluginService {
+public class RuntimeDistCleaner implements ILaunchPluginService
+{
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final Marker DISTXFORM = MarkerFactory.getMarker("DISTXFORM");
     private static String DIST;
     private static final String ONLYIN = Type.getDescriptor(OnlyIn.class);
     private static final String ONLYINS = Type.getDescriptor(OnlyIns.class);
-    private static final String MOD = "Lnet/minecraftforge/fml/common/Mod;";
+    @Override
+    public String name()
+    {
+        return "runtimedistcleaner";
+    }
 
     @Override
-    public String name() {
-        return "runtimedistcleaner";
+    public int processClassWithFlags(final Phase phase, final ClassNode classNode, final Type classType, final String reason)
+    {
+        AtomicBoolean changes = new AtomicBoolean();
+        if (remove(classNode.visibleAnnotations, DIST))
+        {
+            LOGGER.error(DISTXFORM, "Attempted to load class {} for invalid dist {}", classNode.name, DIST);
+            throw new RuntimeException("Attempted to load class "+ classNode.name  + " for invalid dist "+ DIST);
+        }
+
+        if (!FMLEnvironment.production && hasOnlyInWithModAnnotation(classNode.visibleAnnotations))
+        {
+            LOGGER.error(DISTXFORM, "Attempted to load class {} with @Mod and @OnlyIn/@OnlyIns annotations", classNode.name);
+            throw new RuntimeException("Found @OnlyIn on @Mod class "+ classNode.name  + " - this is not allowed as it causes crashes. Remove the OnlyIn and consider setting clientSideOnly=true in the root of your mods.toml instead");
+        }
+
+        if (classNode.interfaces != null )
+        {
+            unpack(classNode.visibleAnnotations).stream()
+                .filter(ann->Objects.equals(ann.desc, ONLYIN))
+                .filter(ann-> ann.values.contains("_interface"))
+                .filter(ann->!Objects.equals(((String[])ann.values.get(ann.values.indexOf("value") + 1))[1], DIST))
+                .map(ann -> ((Type)ann.values.get(ann.values.indexOf("_interface") + 1)).getInternalName())
+                .forEach(intf -> {
+                    if (classNode.interfaces.remove(intf)) {
+                        LOGGER.debug(DISTXFORM,"Removing Interface: {} implements {}", classNode.name, intf);
+                        changes.compareAndSet(false, true);
+                    }
+                });
+
+            //Remove Class level @OnlyIn/@OnlyIns annotations, this is important if anyone gets ambitious and tries to reflect an annotation with _interface set.
+            if (classNode.visibleAnnotations != null) {
+                Iterator<AnnotationNode> itr = classNode.visibleAnnotations.iterator();
+                while (itr.hasNext()) {
+                    AnnotationNode ann = itr.next();
+                    if (Objects.equals(ann.desc, ONLYIN) || Objects.equals(ann.desc, ONLYINS)) {
+                        LOGGER.debug(DISTXFORM,"Removing Class Annotation: {} @{}", classNode.name, ann.desc);
+                        itr.remove();
+                        changes.compareAndSet(false, true);
+                    }
+                }
+            }
+        }
+
+        Iterator<FieldNode> fields = classNode.fields.iterator();
+        while(fields.hasNext())
+        {
+            FieldNode field = fields.next();
+            if (remove(field.visibleAnnotations, DIST))
+            {
+                LOGGER.debug(DISTXFORM,"Removing field: {}.{}", classNode.name, field.name);
+                fields.remove();
+                changes.compareAndSet(false, true);
+            }
+        }
+
+        LambdaGatherer lambdaGatherer = new LambdaGatherer();
+        Iterator<MethodNode> methods = classNode.methods.iterator();
+        while(methods.hasNext())
+        {
+            MethodNode method = methods.next();
+            if (remove(method.visibleAnnotations, DIST))
+            {
+                LOGGER.debug(DISTXFORM,"Removing method: {}.{}{}", classNode.name, method.name, method.desc);
+                methods.remove();
+                lambdaGatherer.accept(method);
+                changes.compareAndSet(false, true);
+            }
+        }
+
+        // remove dynamic synthetic lambda methods that are inside of removed methods
+        for (List<Handle> dynamicLambdaHandles = lambdaGatherer.getDynamicLambdaHandles();
+            !dynamicLambdaHandles.isEmpty(); dynamicLambdaHandles = lambdaGatherer.getDynamicLambdaHandles())
+        {
+            lambdaGatherer = new LambdaGatherer();
+            methods = classNode.methods.iterator();
+            while (methods.hasNext())
+            {
+                MethodNode method = methods.next();
+                if ((method.access & Opcodes.ACC_SYNTHETIC) == 0) continue;
+                for (Handle dynamicLambdaHandle : dynamicLambdaHandles)
+                {
+                    if (method.name.equals(dynamicLambdaHandle.getName()) && method.desc.equals(dynamicLambdaHandle.getDesc()))
+                    {
+                        LOGGER.debug(DISTXFORM,"Removing lambda method: {}.{}{}", classNode.name, method.name, method.desc);
+                        methods.remove();
+                        lambdaGatherer.accept(method);
+                        changes.compareAndSet(false, true);
+                    }
+                }
+            }
+        }
+        return changes.get() ? ComputeFlags.SIMPLE_REWRITE : ComputeFlags.NO_REWRITE;
+    }
+
+    @SuppressWarnings("unchecked")
+    private static List<AnnotationNode> unpack(final List<AnnotationNode> anns)
+    {
+        if (anns == null)
+        {
+            return Collections.emptyList();
+        }
+
+        List<AnnotationNode> unpacked = new ArrayList<>();
+
+        for (var annotationNode : anns)
+        {
+            if (Objects.equals(annotationNode.desc, ONLYINS))
+            {
+                unpacked.add(annotationNode);
+
+                if (annotationNode.values != null)
+                {
+                    List<AnnotationNode> subNodes = (List<AnnotationNode>) annotationNode.values.get(annotationNode.values.indexOf("value") + 1);
+
+                    if (subNodes != null)
+                    {
+                        unpacked.addAll(subNodes);
+                    }
+                }
+            }
+        }
+
+        return unpacked;
+    }
+
+    private static boolean remove(final List<AnnotationNode> anns, final String side)
+    {
+        var onlyIns = unpack(anns);
+
+        for (var onlyIn : onlyIns)
+        {
+            if (!Objects.equals(onlyIn.desc, ONLYINS) || onlyIn.values.contains("_interface"))
+            {
+                continue;
+            }
+
+            if (!Objects.equals(((String[])onlyIn.values.get(onlyIn.values.indexOf("value") + 1))[1], side))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private static boolean hasOnlyInWithModAnnotation(final List<AnnotationNode> anns)
+    {
+        if (anns == null)
+        {
+            return false;
+        }
+
+        var foundModAnnotation = false;
+        var foundOnlyIn = false;
+
+        for (var ann : anns)
+        {
+            if (ann.desc.equals("Lnet/minecraftforge/fml/common/Mod;"))
+            {
+                foundModAnnotation = true;
+            } else if (Objects.equals(ann.desc, ONLYIN) || Objects.equals(ann.desc, ONLYINS))
+            {
+                foundOnlyIn = true;
+            }
+        }
+
+        return foundModAnnotation && foundOnlyIn;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public Consumer<Dist> getExtension()
+    {
+        return (s)-> {
+            DIST = s.name();
+            LOGGER.debug(DISTXFORM, "Configuring for Dist {}", DIST);
+        };
     }
 
     private static final EnumSet<Phase> YAY = EnumSet.of(Phase.AFTER);
@@ -55,164 +242,6 @@ public class RuntimeDistCleaner implements ILaunchPluginService {
         return YAY;
     }
 
-    @Override
-    public int processClassWithFlags(final Phase phase, final ClassNode classNode, final Type classType, final String reason) {
-        var changed = false;
-
-        var annotations = unpack(classNode.visibleAnnotations);
-
-        if (remove(annotations, DIST)) {
-            LOGGER.error(DISTXFORM, "Attempted to load class {} for invalid dist {}", classNode.name, DIST);
-            throw new RuntimeException("Attempted to load class "+ classNode.name  + " for invalid dist "+ DIST);
-        }
-
-        if (!FMLEnvironment.production && !annotations.isEmpty() && hasModAnnotation(classNode.visibleAnnotations)) {
-            LOGGER.error(DISTXFORM, "Attempted to load class {} with @Mod and @OnlyIn/@OnlyIns annotations", classNode.name);
-            throw new RuntimeException("Found @OnlyIn on @Mod class "+ classNode.name  + " - this is not allowed as it causes crashes. Remove the OnlyIn and consider setting clientSideOnly=true in the root of your mods.toml instead");
-        }
-
-        if (classNode.interfaces != null && !classNode.interfaces.isEmpty()) {
-            for (var ann : annotations) {
-                if (ann.intf == null || DIST.equals(ann.side))
-                    continue;
-
-                if (classNode.interfaces.remove(ann.intf)) {
-                    LOGGER.debug(DISTXFORM,"Removing Interface: {} implements {}", classNode.name, ann.intf);
-                    changed = true;
-                }
-            }
-
-            //Remove Class level @OnlyIn/@OnlyIns annotations, this is important if anyone gets ambitious and tries to reflect an annotation with _interface set.
-            if (classNode.visibleAnnotations != null) {
-                for (var itr = classNode.visibleAnnotations.iterator(); itr.hasNext(); ) {
-                    var ann = itr.next();
-                    if (ONLYIN.equals(ann.desc) || ONLYINS.equals(ann.desc)) {
-                        LOGGER.debug(DISTXFORM, "Removing Class Annotation: {} @{}", classNode.name, ann.desc);
-                        itr.remove();
-                        changed = true;
-                    }
-                }
-            }
-        }
-
-        for (var itr = classNode.fields.iterator(); itr.hasNext(); ) {
-            var field = itr.next();
-            if (remove(unpack(field.visibleAnnotations), DIST)) {
-                LOGGER.debug(DISTXFORM, "Removing field: {}.{}", classNode.name, field.name);
-                itr.remove();
-                changed = true;
-            }
-        }
-
-        var lambdaGatherer = new LambdaGatherer();
-        for (var itr = classNode.methods.iterator(); itr.hasNext(); ) {
-            var method = itr.next();
-            if (remove(unpack(method.visibleAnnotations), DIST)) {
-                LOGGER.debug(DISTXFORM, "Removing method: {}.{}{}", classNode.name, method.name, method.desc);
-                itr.remove();
-                lambdaGatherer.accept(method);
-                changed = true;
-            }
-        }
-
-        // remove dynamic synthetic lambda methods that are inside of removed methods
-        for (List<Handle> handles = lambdaGatherer.getDynamicLambdaHandles();
-            !handles.isEmpty(); handles = lambdaGatherer.getDynamicLambdaHandles()) {
-            lambdaGatherer = new LambdaGatherer();
-            for (var itr = classNode.methods.iterator(); itr.hasNext(); ) {
-                MethodNode method = itr.next();
-                if ((method.access & Opcodes.ACC_SYNTHETIC) == 0)
-                    continue;
-
-                for (var handle : handles) {
-                    if (method.name.equals(handle.getName()) && method.desc.equals(handle.getDesc())) {
-                        LOGGER.debug(DISTXFORM, "Removing lambda method: {}.{}{}", classNode.name, method.name, method.desc);
-                        itr.remove();
-                        lambdaGatherer.accept(method);
-                        changed = true;
-                    }
-                }
-            }
-        }
-
-        return changed ? ComputeFlags.SIMPLE_REWRITE : ComputeFlags.NO_REWRITE;
-    }
-
-    private static record Target(String side, String intf) {
-        static Target from(final AnnotationNode node) {
-            var idx = node.values.indexOf("value");
-            var value = (String[])node.values.get(idx + 1); // Enums are stored as [Type, Value]
-
-            idx = node.values.indexOf("_interface");
-            if (idx == -1)
-                return new Target(value[1], null);
-
-            var intf = (Type)node.values.get(idx + 1);
-            return new Target(value[1], intf.getInternalName());
-        }
-    }
-
-    /**
-     * Unpack any OnlyIn or OnlyIns annotations to Target objects.
-     */
-    @SuppressWarnings("unchecked")
-    private static List<Target> unpack(final List<AnnotationNode> anns) {
-        if (anns == null || anns.isEmpty())
-            return Collections.emptyList();
-
-        var ret = new ArrayList<Target>();
-        for (var node : anns) {
-            if (ONLYIN.equals(node.desc))
-                ret.add(Target.from(node));
-            else if (ONLYINS.equals(node.desc)) {
-                if (node.values == null || node.values.isEmpty())
-                    continue;
-
-                int idx = node.values.indexOf("value");
-                if (idx == -1)
-                    continue;
-
-                var subNodes = (List<AnnotationNode>)node.values.get(idx + 1);
-                if (subNodes != null) {
-                    for (var sub : subNodes)
-                        ret.add(Target.from(sub));
-                }
-            }
-        }
-
-        return ret;
-    }
-
-    private static boolean remove(final List<Target> targets, final String side) {
-        for (var target : targets) {
-            if (target.intf == null && !side.equals(target.side))
-                return true;
-        }
-
-        return false;
-    }
-
-    private static boolean hasModAnnotation(final List<AnnotationNode> anns) {
-        if (anns == null || anns.isEmpty())
-            return false;
-
-        for (var ann : anns) {
-            if (ann.desc.equals(MOD))
-                return true;
-        }
-
-        return false;
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public Consumer<Dist> getExtension() {
-        return s -> {
-            DIST = s.name();
-            LOGGER.debug(DISTXFORM, "Configuring for Dist {}", DIST);
-        };
-    }
-
     private static class LambdaGatherer extends MethodVisitor {
         private static final Handle META_FACTORY = new Handle(Opcodes.H_INVOKESTATIC,
                 "java/lang/invoke/LambdaMetafactory", "metafactory",
@@ -225,21 +254,23 @@ public class RuntimeDistCleaner implements ILaunchPluginService {
         }
 
         public void accept(MethodNode method) {
-            for (var insn : method.instructions) {
-                if (insn.getType() == AbstractInsnNode.INVOKE_DYNAMIC_INSN)
-                    insn.accept(this);
-            }
+            Streams.stream(method.instructions.iterator()).
+                    filter(insnNode->insnNode.getType() == AbstractInsnNode.INVOKE_DYNAMIC_INSN).
+                    forEach(insnNode->insnNode.accept(this));
         }
 
         @Override
-        public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) {
-            if (META_FACTORY.equals(bsm)) {
-                var handle = (Handle)bsmArgs[1];
-                dynamicLambdaHandles.add(handle);
+        public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs)
+        {
+            if (META_FACTORY.equals(bsm))
+            {
+                Handle dynamicLambdaHandle = (Handle) bsmArgs[1];
+                dynamicLambdaHandles.add(dynamicLambdaHandle);
             }
         }
 
-        public List<Handle> getDynamicLambdaHandles() {
+        public List<Handle> getDynamicLambdaHandles()
+        {
             return dynamicLambdaHandles;
         }
     }

fmlloader/src/main/java/net/minecraftforge/fml/loading/StringSubstitutor.java

@@ -14,17 +14,16 @@ import org.apache.commons.lang3.text.StrSubstitutor;
 
 @SuppressWarnings("deprecation")
 public class StringSubstitutor {
-    private static final Map<String, String> GLOBALS = Map.of(
-        "mcVersion", FMLLoader.versionInfo().mcVersion(),
-        "forgeVersion", FMLLoader.versionInfo().forgeVersion()
-    );
-
     public static String replace(final String in, final ModFile file) {
         return new StrSubstitutor(getStringLookup(file)).replace(in);
     }
 
     private static StrLookup<String> getStringLookup(final ModFile file) {
-        return new StrLookup<>() {
+        var globals = Map.of(
+            "mcVersion", FMLLoader.versionInfo().mcVersion(),
+            "forgeVersion", FMLLoader.versionInfo().forgeVersion()
+        );
+        return new StrLookup<String>() {
             @Override
             public String lookup(String key) {
                 var parts = key.split("\\.");
@@ -33,7 +32,7 @@ public class StringSubstitutor {
                 var pfx = parts[0];
 
                 if ("global".equals(pfx))
-                    return GLOBALS.get(parts[1]);
+                    return globals.get(parts[1]);
                 else if ("file".equals(pfx) && file != null)
                     return String.valueOf(file.getSubstitutionMap().get().get(parts[1]));
 

fmlloader/src/main/java/net/minecraftforge/fml/loading/UniqueModListBuilder.java

@@ -9,7 +9,6 @@ import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.forgespi.language.IModInfo;
 import org.apache.maven.artifact.versioning.ArtifactVersion;
-import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
@@ -24,18 +23,16 @@ import static java.util.stream.Collectors.groupingBy;
 import static java.util.stream.Collectors.joining;
 import static net.minecraftforge.fml.loading.LogMarkers.LOADING;
 
-@ApiStatus.Internal
-@Deprecated(since = "1.21.3", forRemoval = true) // TODO: [FML][Loading] Convert to package private in 1.22
-public class UniqueModListBuilder {
+public class UniqueModListBuilder
+{
     private final static Logger LOGGER = LogUtils.getLogger();
 
     private final List<ModFile> modFiles;
 
-    public UniqueModListBuilder(final List<ModFile> modFiles) {
-        this.modFiles = modFiles;
-    }
+    public UniqueModListBuilder(final List<ModFile> modFiles) {this.modFiles = modFiles;}
 
-    public UniqueModListData buildUniqueList() {
+    public UniqueModListData buildUniqueList()
+    {
         List<ModFile> uniqueModList;
         List<ModFile> uniqueLibListWithVersion;
 
@@ -50,12 +47,12 @@ public class UniqueModListBuilder {
 
         // Select the newest by artifact version sorting of non-unique files thus identified
         uniqueModList = modFilesByFirstId.entrySet().stream()
-                .map(UniqueModListBuilder::selectNewestModInfo)
+                .map(this::selectNewestModInfo)
                 .toList();
 
         // Select the newest by artifact version sorting of non-unique files thus identified
         uniqueLibListWithVersion = libFilesWithVersionByModuleName.entrySet().stream()
-                .map(UniqueModListBuilder::selectNewestModInfo)
+                .map(this::selectNewestModInfo)
                 .toList();
 
         // Transform to the full mod id list
@@ -78,7 +75,7 @@ public class UniqueModListBuilder {
         final List<String> dupedModErrors = modIds.values().stream()
                 .filter(modInfos -> modInfos.size() > 1)
                 .map(mods -> String.format("\tMod ID: '%s' from mod files: %s",
-                        mods.getFirst().getModId(),
+                        mods.get(0).getModId(),
                         mods.stream()
                                 .map(modInfo -> modInfo.getOwningFile().getFile().getFileName()).collect(joining(", "))
                 )).toList();
@@ -94,8 +91,9 @@ public class UniqueModListBuilder {
         final List<String> dupedLibErrors = versionedLibIds.values().stream()
                 .filter(modFiles -> modFiles.size() > 1)
                 .map(mods -> String.format("\tLibrary: '%s' from files: %s",
-                        getModId(mods.getFirst()),
-                        mods.stream().map(ModFile::getFileName).collect(joining(", "))
+                        getModId(mods.get(0)),
+                        mods.stream()
+                                .map(modFile -> modFile.getFileName()).collect(joining(", "))
                 )).toList();
 
         if (!dupedLibErrors.isEmpty()) {
@@ -109,23 +107,25 @@ public class UniqueModListBuilder {
         final Map<String, List<ModFile>> uniqueModFilesByFirstId = uniqueModList.stream()
                 .collect(groupingBy(UniqueModListBuilder::getModId));
 
-        final List<ModFile> loadedList = new ArrayList<>(uniqueModList);
+        final List<ModFile> loadedList = new ArrayList<>();
+        loadedList.addAll(uniqueModList);
         loadedList.addAll(uniqueLibListWithVersion);
 
         return new UniqueModListData(loadedList, uniqueModFilesByFirstId);
     }
 
-    private static ModFile selectNewestModInfo(Map.Entry<String, List<ModFile>> fullList) {
+    private ModFile selectNewestModInfo(Map.Entry<String, List<ModFile>> fullList) {
         List<ModFile> modInfoList = fullList.getValue();
         if (modInfoList.size() > 1) {
             LOGGER.debug("Found {} mods for first modid {}, selecting most recent based on version data", modInfoList.size(), fullList.getKey());
-            modInfoList.sort(Comparator.comparing(UniqueModListBuilder::getVersion).reversed());
-            LOGGER.debug("Selected file {} for modid {} with version {}", modInfoList.getFirst().getFileName(), fullList.getKey(), getVersion(modInfoList.getFirst()));
+            modInfoList.sort(Comparator.comparing(this::getVersion).reversed());
+            LOGGER.debug("Selected file {} for modid {} with version {}", modInfoList.get(0).getFileName(), fullList.getKey(), this.getVersion(modInfoList.get(0)));
         }
         return modInfoList.get(0);
     }
 
-    private static ArtifactVersion getVersion(final ModFile mf) {
+    private ArtifactVersion getVersion(final ModFile mf)
+    {
         if (mf.getModFileInfo() == null || mf.getModInfos() == null || mf.getModInfos().isEmpty()) {
             return mf.getJarVersion();
         }
@@ -138,8 +138,9 @@ public class UniqueModListBuilder {
             return modFile.getSecureJar().name();
         }
 
-        return modFile.getModFileInfo().getMods().get(0).getModId();
+        return modFile.getModFileInfo().moduleName();
     }
 
     public record UniqueModListData(List<ModFile> modFiles, Map<String, List<ModFile>> modFilesByFirstId) {}
+
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/VersionSupportMatrix.java

@@ -5,53 +5,33 @@
 
 package net.minecraftforge.fml.loading;
 
+import net.minecraftforge.forgespi.language.MavenVersionAdapter;
 import org.apache.maven.artifact.versioning.ArtifactVersion;
 import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
 import org.apache.maven.artifact.versioning.VersionRange;
-import org.jetbrains.annotations.ApiStatus;
 
-import java.util.Collections;
+import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 import java.util.function.BiPredicate;
 
-@ApiStatus.Internal // since 1.21.1, will be made non-public in a later MC version
 public class VersionSupportMatrix {
-    private static final Map<String, List<ArtifactVersion>> OVERRIDE_VERSIONS;
-
+    private static final HashMap<String, List<ArtifactVersion>> overrideVersions = new HashMap<>();
     static {
-        if ("1.21.1".equals(FMLLoader.versionInfo().mcVersion())) {
-            OVERRIDE_VERSIONS = Map.ofEntries(
-                    // 1.21.1 is compatible with 1.21
-                    entry("languageloader.javafml", "51"),
-                    entry("mod.minecraft",          "1.21"),
-                    entry("mod.forge",              "51.0.33")
-            );
-        } else {
-            OVERRIDE_VERSIONS = Collections.emptyMap();
+         final ArtifactVersion version = new DefaultArtifactVersion(FMLLoader.versionInfo().mcVersion());
+         if (MavenVersionAdapter.createFromVersionSpec("[1.19.2]").containsVersion(version)) {
+             // 1.19.2 is Compatible with 1.19.1
+             add("languageloader.javafml", "42");
+             add("mod.minecraft",          "1.19.1");
+             add("mod.forge",              "42.0.9");
         }
     }
-
-    /**
-     * @deprecated Use {@link #testVersionSupportMatrix(VersionRange, String, String)} instead, unwrapping your BiPredicate.
-     */
-    @Deprecated(forRemoval = true, since = "1.21.1")
-    public static boolean testVersionSupportMatrix(VersionRange declaredRange, String lookupId, String type, BiPredicate<String, VersionRange> standardLookup) {
+    private static void add(String key, String value) {
+        overrideVersions.computeIfAbsent(key, k -> new ArrayList<>()).add(new DefaultArtifactVersion(value));
+    }
+    public static <T> boolean testVersionSupportMatrix(VersionRange declaredRange, String lookupId, String type, BiPredicate<String, VersionRange> standardLookup) {
         if (standardLookup.test(lookupId, declaredRange)) return true;
-        return testVersionSupportMatrix(declaredRange, lookupId, type);
-    }
-
-    public static boolean testVersionSupportMatrix(VersionRange declaredRange, String lookupId, String type) {
-        if (OVERRIDE_VERSIONS.isEmpty()) return false;
-        List<ArtifactVersion> custom = OVERRIDE_VERSIONS.get(type + "." + lookupId);
-        return custom != null && custom.stream().anyMatch(declaredRange::containsVersion);
-    }
-
-    private static Map.Entry<String, List<ArtifactVersion>> entry(String typeAndLookupId, String declaredRange) {
-        return Map.entry(typeAndLookupId, List.of(new DefaultArtifactVersion(declaredRange)));
-    }
-
-    private static Map.Entry<String, List<ArtifactVersion>> entry(String typeAndLookupId, List<String> declaredRanges) {
-        return Map.entry(typeAndLookupId, declaredRanges.stream().map(DefaultArtifactVersion::new).map(it -> (ArtifactVersion) it).toList());
+        List<ArtifactVersion> custom = overrideVersions.get(type + "." + lookupId);
+        return custom == null ? false  : custom.stream().anyMatch(declaredRange::containsVersion);
     }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/log4j/ForgeHighlight.java

@@ -18,7 +18,9 @@ import org.apache.logging.log4j.util.PerformanceSensitive;
 import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Method;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 
 /**
  * A wrapper for {@link HighlightConverter} that auto-disables ANSI when the terminal doesn't support it.
@@ -47,7 +49,10 @@ public class ForgeHighlight {
             LOGGER.warn("Failed to invoke initializeTerminal on TCA", e);
         }
         if (!TerminalConsoleAppender.isAnsiSupported() && Arrays.stream(options).noneMatch(s -> s.equals("disableAnsi=true"))) {
-            options = new String[] { options[0], "disableAnsi=true" };
+            List<String> optionList = new ArrayList<>();
+            optionList.add(options[0]);
+            optionList.add("disableAnsi=true");
+            options = optionList.toArray(new String[0]);
         }
         return HighlightConverter.newInstance(config, options);
     }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/AbstractModProvider.java

@@ -6,7 +6,6 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.mojang.logging.LogUtils;
-
 import cpw.mods.jarhandling.JarMetadata;
 import cpw.mods.jarhandling.SecureJar;
 import net.minecraftforge.fml.loading.LogMarkers;
@@ -23,25 +22,19 @@ import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
 
 import java.io.IOException;
-import java.lang.module.InvalidModuleDescriptorException;
-import java.lang.module.ModuleDescriptor;
-import java.lang.module.ModuleDescriptor.Version;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collections;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.function.Consumer;
 import java.util.jar.JarFile;
-import java.util.stream.Collectors;
 
 @ApiStatus.Internal
 public abstract class AbstractModProvider implements IModProvider {
-    private static final   Logger LOGGER      = LogUtils.getLogger();
-    protected static final String MODS_TOML   = "META-INF/mods.toml";
-    protected static final String MODULE_INFO = "module-info.class";
+    private static final   Logger LOGGER    = LogUtils.getLogger();
+    protected static final String MODS_TOML = "META-INF/mods.toml";
 
     protected IModLocator.ModFileOrException createMod(Path path) {
         return createMod(path, false);
@@ -49,18 +42,16 @@ public abstract class AbstractModProvider implements IModProvider {
 
     @Nullable
     protected IModLocator.ModFileOrException createMod(Path path, boolean ignoreUnknown) {
-        return createMod(path, ignoreUnknown, getDefaultJarModType());
+        return createMod(path, false, getDefaultJarModType());
     }
 
     @Nullable
     protected IModLocator.ModFileOrException createMod(Path path, boolean ignoreUnknown, String defaultType) {
         var mjm = new ModJarMetadata();
-        SecureJar sj = null;
-        try {
-            sj = SecureJar.from(jar -> loadMetaFromJar(jar, mjm), path);
-        } catch (Throwable t) {
-            return new IModLocator.ModFileOrException(null, new ModFileLoadingException("Failed to create secure jar for \"" + path + "\" - " + t.getMessage()));
-        }
+        var sj = SecureJar.from(
+            jar -> jar.moduleDataProvider().findFile(MODS_TOML).isPresent() ? mjm : JarMetadata.from(jar, path),
+            path
+        );
 
         IModFile mod;
         var type = sj.moduleDataProvider().getManifest().getMainAttributes().getValue(ModFile.TYPE);
@@ -70,8 +61,6 @@ public abstract class AbstractModProvider implements IModProvider {
         if (sj.moduleDataProvider().findFile(MODS_TOML).isPresent()) {
             LOGGER.debug(LogMarkers.SCAN, "Found {} mod of type {}: {}", MODS_TOML, type, path);
             mod = new ModFile(sj, this, ModFileParser::modsTomlParser);
-            // ModJarMetadata is only used when loading mods.toml mods as ModJarMetadata
-            mjm.setModFile(mod);
             if (mod.getModFileInfo().getFileProperties().containsKey(ModFileInfo.NOT_A_FORGE_MOD_PROP)) {
                 LOGGER.error(LogMarkers.SCAN, "Unable to load file \"{}\" because its mods.toml is requesting an invalid javafml loaderVersion (use \"*\" if you want to allow all versions) and is missing a forge modId dependency declaration (see the sample mods.toml in the MDK).", path);
                 return new IModLocator.ModFileOrException(null, new ModFileLoadingException("File \"%s\" is not a Forge mod and cannot be loaded. Look for a Forge version of this mod or consider alternative mods.".formatted(mod.getFileName())));
@@ -84,63 +73,14 @@ public abstract class AbstractModProvider implements IModProvider {
         } else
             return new IModLocator.ModFileOrException(null, new ModFileLoadingException("Invalid mod file found " + path));
 
+        mjm.setModFile(mod);
         return new IModLocator.ModFileOrException(mod, null);
     }
 
-    private static JarMetadata loadMetaFromJar(SecureJar jar, ModJarMetadata mjm) {
-        var info = jar.moduleDataProvider().open(MODULE_INFO).orElse(null);
-        if (info != null) {
-            try {
-                var desc = ModuleDescriptor.read(info, jar::getPackages);
-                var all = new HashSet<>(jar.getPackages());
-                all.removeAll(desc.packages());
-                if (!all.isEmpty()) {
-                    var missing = all.stream().sorted().collect(Collectors.joining(", "));
-                    LOGGER.error("Invalid module-info, missing packages " + missing);
-                    throw new ModFileLoadingException("Invalid module-info, missing packages " + missing);
-                } else {
-                    return new JarMetadata() {
-                        @Override
-                        public String name() {
-                            return desc.name();
-                        }
-
-                        @Override
-                        public String version() {
-                            return desc.version().map(Version::toString).or(desc::rawVersion).orElse(null);
-                        }
-
-                        @Override
-                        public ModuleDescriptor descriptor() {
-                            return desc;
-                        }
-                    };
-                }
-            } catch (InvalidModuleDescriptorException | IOException e) {
-                LOGGER.error("Failed to parse " + jar.getPrimaryPath() + " module-info", e);
-                throw new ModFileLoadingException("Invalid module-info: " + e.getMessage());
-            } finally {
-                try {
-                    info.close();
-                } catch (IOException e) {}
-            }
-        }
-
-        if (jar.moduleDataProvider().findFile(MODS_TOML).isEmpty())
-            return JarMetadata.from(jar, jar.getPrimaryPath());
-
-        return mjm;
-    }
-
     protected IModFileInfo manifestParser(final IModFile mod) {
         var mf = mod.getSecureJar().moduleDataProvider().getManifest().getMainAttributes();
         var license = mf.getValue("LICENSE");
         var dummy = new IConfigurable() {
-            @Override
-            public <T> Optional<T> getConfigElement(String key) {
-                return Optional.empty();
-            }
-
             @Override
             public <T> Optional<T> getConfigElement(String... key) {
                 return Optional.empty();
@@ -200,11 +140,10 @@ public abstract class AbstractModProvider implements IModProvider {
     }
 
     private static final class Holder<T> {
-        private T value;
+        T value;
     }
 
     private record DefaultModFileInfo(IModFile mod, String license, IConfigurable configurable) implements IModFileInfo, IConfigurable {
-        @Override public <T> Optional<T> getConfigElement(final String string) { return Optional.empty(); }
         @Override public <T> Optional<T> getConfigElement(final String... strings) { return Optional.empty(); }
         @Override public List<? extends IConfigurable> getConfigList(final String... strings) { return null; }
         @Override public List<IModInfo> getMods() { return Collections.emptyList(); }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/BackgroundScanHandler.java

@@ -29,7 +29,6 @@ public class BackgroundScanHandler
     }
 
     private static final Logger LOGGER = LogUtils.getLogger();
-    private static final boolean DEBUG = LOGGER.isErrorEnabled(LogMarkers.SCAN);
     private final ExecutorService modContentScanner;
     private final List<ModFile> modFiles;
     private ScanStatus status;
@@ -56,16 +55,16 @@ public class BackgroundScanHandler
         }
         status = ScanStatus.RUNNING;
         ImmediateWindowHandler.updateProgress("Scanning mod candidates");
-        CompletableFuture<ModFileScanData> future = CompletableFuture.supplyAsync(file::compileContent, modContentScanner)
-                .whenComplete(file::setScanResult);
-        if (DEBUG) future = future.whenComplete((r, t) -> addCompletedFile(file, t));
+        final CompletableFuture<ModFileScanData> future = CompletableFuture.supplyAsync(file::compileContent, modContentScanner)
+                .whenComplete(file::setScanResult)
+                .whenComplete((r,t)-> this.addCompletedFile(file,r,t));
         file.setFutureScanResult(future);
     }
 
-    private void addCompletedFile(final ModFile file, final Throwable throwable) {
+    private void addCompletedFile(final ModFile file, final ModFileScanData modFileScanData, final Throwable throwable) {
         if (throwable != null) {
             status = ScanStatus.ERRORED;
-            LOGGER.error(LogMarkers.SCAN, "An error occurred scanning file {}", file, throwable);
+            LOGGER.error(LogMarkers.SCAN,"An error occurred scanning file {}", file, throwable);
         }
     }
 

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ClasspathLocator.java

@@ -18,9 +18,9 @@ import java.io.IOException;
 import java.net.URI;
 import java.net.URL;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
 import java.util.jar.Attributes;
@@ -28,7 +28,7 @@ import java.util.jar.JarFile;
 import java.util.jar.Manifest;
 
 @ApiStatus.Internal
-public final class ClasspathLocator extends AbstractModProvider implements IModLocator {
+public class ClasspathLocator extends AbstractModProvider implements IModLocator {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final Attributes.Name MOD_TYPE = new Attributes.Name("FMLModType");
 
@@ -80,11 +80,11 @@ public final class ClasspathLocator extends AbstractModProvider implements IModL
         return ret;
     }
 
-    private static List<URL> getUrls(ClassLoader cl, String resource) {
+    private List<URL> getUrls(ClassLoader cl, String resource) {
         try {
             var lst = Collections.list(cl.getResources(resource));
             if (LOGGER.isDebugEnabled(LogMarkers.SCAN)) {
-                lst.sort(Comparator.comparing(URL::toString));
+                Collections.sort(lst, (a, b) -> a.toString().compareTo(b.toString()));
                 LOGGER.debug(LogMarkers.SCAN, "Scanning Classloader: {} for {}", cl, resource);
                 for (var url : lst)
                     LOGGER.debug(LogMarkers.SCAN, "\t{}", url);
@@ -104,7 +104,8 @@ public final class ClasspathLocator extends AbstractModProvider implements IModL
             len += 2;
         }
         str = str.substring(0, str.length() - len);
-        return Path.of(URI.create(str));
+        var path = Paths.get(URI.create(str));
+        return path;
     }
 
     private static Path getPathFromResource(ClassLoader cl, String resource) {

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/CoreModFile.java

@@ -15,7 +15,7 @@ import java.nio.file.Path;
 import org.jetbrains.annotations.ApiStatus;
 
 @ApiStatus.Internal
-public final class CoreModFile implements ICoreModFile {
+public class CoreModFile implements ICoreModFile {
     private final Path internalPath;
     private final ModFile file;
     private final String name;

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/InvalidModIdentifier.java

@@ -9,6 +9,7 @@ import cpw.mods.modlauncher.api.LamdbaExceptionUtils.Supplier_WithExceptions;
 import net.minecraftforge.fml.loading.StringUtils;
 
 import java.nio.file.Path;
+import java.util.Arrays;
 import java.util.Optional;
 import java.util.function.BiPredicate;
 import java.util.stream.Stream;

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/JarInJarDependencyLocator.java

@@ -6,6 +6,7 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.Lists;
 import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.EarlyLoadingException;
 import net.minecraftforge.forgespi.language.IModInfo;
@@ -25,7 +26,6 @@ import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
@@ -51,7 +51,7 @@ public class JarInJarDependencyLocator extends AbstractModProvider implements ID
 
     @Override
     public List<IModFile> scanMods(Iterable<IModFile> loadedMods) {
-        final List<IModFile> sources = new ArrayList<>();
+        final List<IModFile> sources = Lists.newArrayList();
         loadedMods.forEach(sources::add);
 
         var dependenciesToLoad = JarSelector.detectAndSelect(
@@ -102,34 +102,34 @@ public class JarInJarDependencyLocator extends AbstractModProvider implements ID
     protected EarlyLoadingException exception(Collection<JarSelector.ResolutionFailureInformation<IModFile>> failedDependencies) {
         final List<EarlyLoadingException.ExceptionData> errors = failedDependencies.stream()
                .filter(entry -> !entry.sources().isEmpty()) //Should never be the case, but just to be sure
-               .map(JarInJarDependencyLocator::buildExceptionData)
+               .map(this::buildExceptionData)
                .toList();
 
         return new EarlyLoadingException(failedDependencies.size() + " Dependency restrictions were not met.", null, errors);
     }
 
     @NotNull
-    private static EarlyLoadingException.ExceptionData buildExceptionData(JarSelector.ResolutionFailureInformation<IModFile> entry) {
+    private EarlyLoadingException.ExceptionData buildExceptionData(JarSelector.ResolutionFailureInformation<IModFile> entry) {
         return new EarlyLoadingException.ExceptionData(
                 getErrorTranslationKey(entry),
                 entry.identifier().group() + ":" + entry.identifier().artifact(),
                 entry.sources()
                      .stream()
-                     .flatMap(JarInJarDependencyLocator::getModWithVersionRangeStream)
-                     .map(JarInJarDependencyLocator::formatError)
+                     .flatMap(this::getModWithVersionRangeStream)
+                     .map(this::formatError)
                      .collect(Collectors.joining(", "))
         );
     }
 
     @NotNull
-    private static String getErrorTranslationKey(JarSelector.ResolutionFailureInformation<IModFile> entry) {
+    private String getErrorTranslationKey(JarSelector.ResolutionFailureInformation<IModFile> entry) {
         return entry.failureReason() == JarSelector.FailureReason.VERSION_RESOLUTION_FAILED ?
                        "fml.dependencyloading.conflictingdependencies" :
                        "fml.dependencyloading.mismatchedcontaineddependencies";
     }
 
     @NotNull
-    private static Stream<ModWithVersionRange> getModWithVersionRangeStream(JarSelector.SourceWithRequestedVersionRange<IModFile> file) {
+    private Stream<ModWithVersionRange> getModWithVersionRangeStream(JarSelector.SourceWithRequestedVersionRange<IModFile> file) {
         return file.sources()
                    .stream()
                    .map(IModFile::getModFileInfo)
@@ -152,7 +152,7 @@ public class JarInJarDependencyLocator extends AbstractModProvider implements ID
     }
 
     @NotNull
-    private static String formatError(ModWithVersionRange modWithVersionRange){
+    private String formatError(ModWithVersionRange modWithVersionRange){
         return YELLOW + modWithVersionRange.modInfo().getModId() + RESET + " - " +
                RED + modWithVersionRange.versionRange().toString() + RESET + " - " +
                GREEN + modWithVersionRange.artifactVersion().toString() + RESET;

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/MinecraftLocator.java

@@ -18,22 +18,24 @@ import java.util.List;
 import org.jetbrains.annotations.ApiStatus;
 
 @ApiStatus.Internal
-public final class MinecraftLocator extends AbstractModProvider implements IModLocator {
+public class MinecraftLocator extends AbstractModProvider implements IModLocator {
     @Override
     public List<IModLocator.ModFileOrException> scanMods() {
         var minecraft = FMLLoader.getLaunchHandler().getMinecraftPaths();
-        var paths = minecraft.toArray(Path[]::new);
 
         // Minecraft itself.
         var meta = new ModJarMetadata();
-        var mcjar = SecureJar.from(jar -> meta, paths);
-        var mc = ModFileFactory.FACTORY.build(mcjar, this, MinecraftLocator::buildMinecraftTOML);
+        var mcjar = SecureJar.from(
+            jar -> meta,
+            minecraft.toArray(Path[]::new)
+        );
+        var mc = ModFileFactory.FACTORY.build(mcjar, this, this::buildMinecraftTOML);
         meta.setModFile(mc);
 
         return List.of(new ModFileOrException(mc, null));
     }
 
-    private static IModFileInfo buildMinecraftTOML(final IModFile iModFile) {
+    private IModFileInfo buildMinecraftTOML(final IModFile iModFile) {
         // We haven't changed this in years, and I can't be asked right now to special case this one file in the path.
         final var conf = Config.inMemory();
         conf.set("modLoader", "minecraft");
@@ -43,14 +45,14 @@ public final class MinecraftLocator extends AbstractModProvider implements IModL
         mods.set("modId", "minecraft");
         mods.set("version", FMLLoader.versionInfo().mcVersion());
         mods.set("displayName", "Minecraft");
-        //mods.set("logoFile", "mcplogo.png");
-        //mods.set("credits", "Mojang, deobfuscated by MCP");
-        //mods.set("authors", "MCP: Searge,ProfMobius,IngisKahn,Fesh0r,ZeuX,R4wk,LexManos,Bspkrs");
-        mods.set("description", "The base Minecraft game, published by Mojang decompiled and deobfuscated by Forge");
+        mods.set("logoFile", "mcplogo.png");
+        mods.set("credits", "Mojang, deobfuscated by MCP");
+        mods.set("authors", "MCP: Searge,ProfMobius,IngisKahn,Fesh0r,ZeuX,R4wk,LexManos,Bspkrs");
+        mods.set("description", "Minecraft, decompiled and deobfuscated with MCP technology");
         conf.set("mods", List.of(mods));
 
         var configWrapper = new NightConfigWrapper(conf);
-        return new ModFileInfo((ModFile) iModFile, configWrapper, configWrapper::setFile);
+        return new ModFileInfo((ModFile)iModFile, configWrapper, configWrapper::setFile, List.of());
     }
 
     @Override

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModDiscoverer.java

@@ -6,6 +6,7 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Maps;
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.Launcher;
 import cpw.mods.modlauncher.api.IModuleLayerManager;
@@ -27,7 +28,6 @@ import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
-import java.util.EnumMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -49,26 +49,23 @@ public class ModDiscoverer {
         modLocators = ServiceLoader.load(moduleLayerManager.getLayer(IModuleLayerManager.Layer.SERVICE).orElseThrow(), IModLocator.class);
         dependencyLocators = ServiceLoader.load(moduleLayerManager.getLayer(IModuleLayerManager.Layer.SERVICE).orElseThrow(), IDependencyLocator.class);
         modLocatorList = ServiceLoaderUtils.streamServiceLoader(()-> modLocators, sce->LOGGER.error("Failed to load mod locator list", sce)).collect(Collectors.toList());
-        for (IModLocator iModLocator : modLocatorList) {
-            iModLocator.initArguments(arguments);
-        }
+        modLocatorList.forEach(l->l.initArguments(arguments));
         dependencyLocatorList = ServiceLoaderUtils.streamServiceLoader(()-> dependencyLocators, sce->LOGGER.error("Failed to load dependency locator list", sce)).collect(Collectors.toList());
-        for (IDependencyLocator l : dependencyLocatorList) {
-            l.initArguments(arguments);
-        }
+        dependencyLocatorList.forEach(l->l.initArguments(arguments));
         if (LOGGER.isDebugEnabled(LogMarkers.CORE))
         {
             LOGGER.debug(LogMarkers.CORE, "Found Mod Locators : {}", modLocatorList.stream()
                                                                        .map(modLocator -> "(%s:%s)".formatted(modLocator.name(),
                                                                          modLocator.getClass().getPackage().getImplementationVersion())).collect(Collectors.joining(",")));
-
+        }
+        if (LOGGER.isDebugEnabled(LogMarkers.CORE))
+        {
             LOGGER.debug(LogMarkers.CORE, "Found Dependency Locators : {}", dependencyLocatorList.stream()
                                                                        .map(dependencyLocator -> "(%s:%s)".formatted(dependencyLocator.name(),
                                                                          dependencyLocator.getClass().getPackage().getImplementationVersion())).collect(Collectors.joining(",")));
         }
     }
 
-    @SuppressWarnings("removal")
     public ModValidator discoverMods() {
         LOGGER.debug(LogMarkers.SCAN,"Scanning for mods and other resources to load. We know {} ways to find mods", modLocatorList.size());
         List<ModFile> loadedFiles = new ArrayList<>();
@@ -129,7 +126,7 @@ public class ModDiscoverer {
         }
 
         //First processing run of the mod list. Any duplicates will cause resolution failure and dependency loading will be skipped.
-        Map<IModFile.Type, List<ModFile>> modFilesMap = new EnumMap<>(IModFile.Type.class);
+        Map<IModFile.Type, List<ModFile>> modFilesMap = Maps.newHashMap();
         try {
             final UniqueModListBuilder modsUniqueListBuilder = new UniqueModListBuilder(loadedFiles);
             final UniqueModListBuilder.UniqueModListData uniqueModsData = modsUniqueListBuilder.buildUniqueList();
@@ -137,7 +134,7 @@ public class ModDiscoverer {
             //Grab the temporary results.
             //This allows loading to continue to a base state, in case dependency loading fails.
             modFilesMap = uniqueModsData.modFiles().stream()
-                            .collect(Collectors.groupingBy(IModFile::getType, () -> new EnumMap<>(IModFile.Type.class), Collectors.toList()));
+                            .collect(Collectors.groupingBy(IModFile::getType));
             loadedFiles = uniqueModsData.modFiles();
         }
         catch (EarlyLoadingException exception) {
@@ -174,11 +171,11 @@ public class ModDiscoverer {
 
                 //We now only need the mod files map, not the list.
                 modFilesMap = uniqueModsAndDependenciesData.modFiles().stream()
-                                .collect(Collectors.groupingBy(IModFile::getType, () -> new EnumMap<>(IModFile.Type.class), Collectors.toList()));
+                                .collect(Collectors.groupingBy(IModFile::getType));
             } catch (EarlyLoadingException exception) {
                 LOGGER.error(LogMarkers.SCAN, "Failed to build unique mod list after dependency discovery.", exception);
                 discoveryErrorData.addAll(exception.getAllData());
-                modFilesMap = loadedFiles.stream().collect(Collectors.groupingBy(IModFile::getType, () -> new EnumMap<>(IModFile.Type.class), Collectors.toList()));
+                modFilesMap = loadedFiles.stream().collect(Collectors.groupingBy(IModFile::getType));
             }
         }
         else {
@@ -193,7 +190,8 @@ public class ModDiscoverer {
         return validator;
     }
 
-    private static void handleLocatedFiles(final List<ModFile> loadedFiles, final List<IModFile> locatedFiles) {
+    private void handleLocatedFiles(final List<ModFile> loadedFiles, final List<IModFile> locatedFiles)
+    {
         var locatedModFiles = locatedFiles.stream().filter(ModFile.class::isInstance).map(ModFile.class::cast).toList();
         for (IModFile mf : locatedModFiles) {
             LOGGER.info(LogMarkers.SCAN, "Found mod file {} of type {} with provider {}", mf.getFileName(), mf.getType(), mf.getProvider());

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFile.java

@@ -39,13 +39,15 @@ import java.util.jar.Manifest;
 public class ModFile implements IModFile {
     private static final Logger LOGGER = LogUtils.getLogger();
     private final String jarVersion;
+    private final ModFileFactory.ModFileInfoParser parser;
     private Map<String, Object> fileProperties;
     private List<IModLanguageProvider> loaders;
     private Throwable scanError;
     private final SecureJar jar;
     private final Type modFileType;
+    private final Manifest     manifest;
     private final IModProvider provider;
-    private final IModFileInfo modFileInfo;
+    private       IModFileInfo modFileInfo;
     private ModFileScanData fileModFileScanData;
     private CompletableFuture<ModFileScanData> futureScanResult;
     private List<CoreModFile> coreMods;
@@ -61,11 +63,12 @@ public class ModFile implements IModFile {
     public ModFile(final SecureJar jar, final IModProvider provider, final ModFileFactory.ModFileInfoParser parser, String type) {
         this.provider = provider;
         this.jar = jar;
+        this.parser = parser;
 
-        var manifest = this.jar.moduleDataProvider().getManifest();
+        manifest = this.jar.moduleDataProvider().getManifest();
         modFileType = Type.valueOf(type);
         jarVersion = Optional.ofNullable(manifest.getMainAttributes().getValue(Attributes.Name.IMPLEMENTATION_VERSION)).orElse("0.0NONE");
-        this.modFileInfo = ModFileParser.readModList(this, parser);
+        this.modFileInfo = ModFileParser.readModList(this, this.parser);
     }
 
     @Override
@@ -97,13 +100,11 @@ public class ModFile implements IModFile {
     }
 
     public boolean identifyMods() {
+        this.modFileInfo = ModFileParser.readModList(this, this.parser);
         if (this.modFileInfo == null) return this.getType() != Type.MOD;
         LOGGER.debug(LogMarkers.LOADING,"Loading mod file {} with languages {}", this.getFilePath(), this.modFileInfo.requiredLanguageLoaders());
         this.coreMods = ModFileParser.getCoreMods(this);
-        if (!this.coreMods.isEmpty())
-            LOGGER.warn("Mod file {} contains javascript coremods! JS CoreMods are deprecated and will be removed in a future release. Consider using Mixin or ModLauncher transformers.", this.getFileName());
-        for (var mi : this.coreMods)
-            LOGGER.debug(LogMarkers.LOADING, "Found coremod {}", mi.getPath());
+        this.coreMods.forEach(mi-> LOGGER.debug(LogMarkers.LOADING,"Found coremod {}", mi.getPath()));
         this.accessTransformer = findResource("META-INF", "accesstransformer.cfg");
         return true;
     }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModFileInfo.java

@@ -7,6 +7,7 @@ package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.google.common.base.Strings;
 import com.mojang.logging.LogUtils;
+import cpw.mods.modlauncher.api.LamdbaExceptionUtils;
 import net.minecraftforge.fml.loading.LogMarkers;
 import net.minecraftforge.fml.loading.StringUtils;
 import net.minecraftforge.forgespi.language.IConfigurable;
@@ -17,15 +18,17 @@ import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 import javax.security.auth.x500.X500Principal;
 import java.net.URL;
+import java.security.CodeSigner;
 import java.security.InvalidKeyException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.security.NoSuchProviderException;
 import java.security.SignatureException;
-import java.security.cert.CertificateEncodingException;
+import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashMap;
 import java.util.List;
@@ -34,8 +37,10 @@ import java.util.Objects;
 import java.util.Optional;
 import java.util.function.Consumer;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
-public class ModFileInfo implements IModFileInfo, IConfigurable {
+public class ModFileInfo implements IModFileInfo, IConfigurable
+{
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final String MAYBE_NOT_JAVAFML_VER = "[2,)";
     private static final String JAVAFML = "javafml";
@@ -55,7 +60,8 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
     private final String license;
     private final List<String> usesServices;
 
-    ModFileInfo(final ModFile modFile, final IConfigurable config, Consumer<IModFileInfo> configFileConsumer) {
+    ModFileInfo(final ModFile modFile, final IConfigurable config, Consumer<IModFileInfo> configFileConsumer)
+    {
         this.modFile = modFile;
         this.config = config;
         configFileConsumer.accept(this);
@@ -80,6 +86,10 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
                 .orElse(false);
         this.clientSideOnly = config.<Boolean>getConfigElement("clientSideOnly")
                 .orElse(false);
+        if (this.clientSideOnly) {
+            // if clientSideOnly, then this is definitely a Forge mod
+            maybeNotAForgeMod = false;
+        }
         this.showAsDataPack = config.<Boolean>getConfigElement("showAsDataPack")
                 .orElse(false);
         this.usesServices = config.<List<String>>getConfigElement("services")
@@ -88,10 +98,6 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
                 .map(StringUtils::toURL)
                 .orElse(null);
 
-        // if clientSideOnly, then this is definitely a Forge mod
-        if (this.clientSideOnly)
-            maybeNotAForgeMod = false;
-
         if (maybeNotAForgeMod) {
             // mark this file as not a Forge mod. Note: this marker may be removed later based on the mod dependencies
             this.properties = config.<Map<String, Object>>getConfigElement("properties")
@@ -104,14 +110,15 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
         this.modFile.setFileProperties(this.properties);
 
         final List<? extends IConfigurable> modConfigs = config.getConfigList("mods");
-        if (modConfigs == null || modConfigs.isEmpty())
+        if (modConfigs.isEmpty())
+        {
             throw new InvalidModFileException("Missing mods list", this);
-
+        }
         this.mods = modConfigs.stream()
-                .map(mi -> (IModInfo) ModInfo.of(this, mi))
+                .map(mi-> (IModInfo)new ModInfo(this, mi))
                 .toList();
-
-        if (LOGGER.isDebugEnabled(LogMarkers.LOADING)) {
+        if (LOGGER.isDebugEnabled(LogMarkers.LOADING))
+        {
             LOGGER.debug(LogMarkers.LOADING, "Found valid mod file {} with {} mods - versions {}",
                     this.modFile.getFileName(),
                     this.mods.stream().map(IModInfo::getModId).collect(Collectors.joining(",", "{", "}")),
@@ -125,11 +132,13 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
     }
 
     @Override
-    public List<IModInfo> getMods() {
+    public List<IModInfo> getMods()
+    {
         return mods;
     }
 
-    public ModFile getFile() {
+    public ModFile getFile()
+    {
         return this.modFile;
     }
 
@@ -139,42 +148,44 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
     }
 
     @Override
-    public Map<String, Object> getFileProperties() {
+    public Map<String, Object> getFileProperties()
+    {
         return this.properties;
     }
 
     @Override
-    public boolean showAsResourcePack() {
+    public boolean showAsResourcePack()
+    {
         return this.showAsResourcePack;
     }
 
     @Override
-    public boolean isClientSideOnly() {
+    public boolean isClientSideOnly()
+    {
         return this.clientSideOnly;
     }
 
     @Override
-    public boolean showAsDataPack() {
+    public boolean showAsDataPack()
+    {
         return this.showAsDataPack;
     }
 
     @Override
-    public <T> Optional<T> getConfigElement(final String key) {
+    public <T> Optional<T> getConfigElement(final String... key)
+    {
         return this.config.getConfigElement(key);
     }
 
     @Override
-    public <T> Optional<T> getConfigElement(final String... key) {
-        return this.config.getConfigElement(key);
-    }
-
-    @Override
-    public List<? extends IConfigurable> getConfigList(final String... key) {
+    public List<? extends IConfigurable> getConfigList(final String... key)
+    {
         return this.config.getConfigList(key);
     }
 
     @Override
-    public String getLicense() {
+    public String getLicense()
+    {
         return license;
     }
 
@@ -183,83 +194,54 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
         return this;
     }
 
-    public URL getIssueURL() {
+    public URL getIssueURL()
+    {
         return issueURL;
     }
 
-    public boolean missingLicense() {
+    public boolean missingLicense()
+    {
         return Strings.isNullOrEmpty(license);
     }
 
-    private static final char[] HEX = "0123456789ABCDEF".toCharArray();
     public Optional<String> getCodeSigningFingerprint() {
         var signers = this.modFile.getSecureJar().getManifestSigners();
-        if (signers == null)
-            return Optional.empty();
-
-        for (var signer : signers) {
-            for (var cert : signer.getSignerCertPath().getCertificates()) {
-                try {
-                    var encoded = cert.getEncoded();
-                    var sha256 = MessageDigest.getInstance("SHA-256");
-                    var digest = sha256.digest(encoded);
-                    var buf = new StringBuilder(digest.length * 3);
-                    for (int x = 0; x < digest.length - 1; x++) {
-                        buf.append(HEX[(digest[x] & 0xF0) >> 4]);
-                        buf.append(HEX[(digest[x] & 0x0F)     ]);
-                        buf.append(':');
-                    }
-                    buf.append(HEX[(digest[digest.length - 1] & 0xF0) >> 4]);
-                    buf.append(HEX[(digest[digest.length - 1] & 0x0F)     ]);
-
-                    // We only care about the first. Should we list them all?
-                    return Optional.of(buf.toString());
-                } catch (CertificateEncodingException | NoSuchAlgorithmException e) {
-                    sneak(e);
-                }
-            }
-        }
-
-        return Optional.empty();
-
+        return (signers == null ? Stream.<CodeSigner>of() : Arrays.stream(signers))
+                .flatMap(csa->csa.getSignerCertPath().getCertificates().stream())
+                .findFirst()
+                .map(LamdbaExceptionUtils.rethrowFunction(Certificate::getEncoded))
+                .map(bytes->LamdbaExceptionUtils.uncheck(()->MessageDigest.getInstance("SHA-256")).digest(bytes))
+                .map(StringUtils::binToHex)
+                .map(str-> String.join(":", str.split("(?<=\\G.{2})")));
     }
 
     public Optional<String> getTrustData() {
-        var signers = this.modFile.getSecureJar().getManifestSigners();
-        if (signers == null)
-            return Optional.empty();
-
-        for (var signer : signers) {
-            for (var cert : signer.getSignerCertPath().getCertificates()) {
-                if (!(cert instanceof X509Certificate x509))
-                    continue;
-
-                var sb = new StringBuilder();
-                sb.append(x509.getSubjectX500Principal().getName(X500Principal.RFC2253).split(",")[0]);
-
-                var selfSigned = false;
-                try {
-                    x509.verify(x509.getPublicKey());
-                    selfSigned = true;
-                } catch (CertificateException | NoSuchAlgorithmException | InvalidKeyException | SignatureException | NoSuchProviderException e) {
-                    // not self signed
-                }
-
-                if (selfSigned)
+        return Arrays.stream(this.modFile.getSecureJar().getManifestSigners())
+                .flatMap(csa->csa.getSignerCertPath().getCertificates().stream())
+                .findFirst()
+                .map(X509Certificate.class::cast)
+                .map(c->{
+                    StringBuffer sb = new StringBuffer();
+                    sb.append(c.getSubjectX500Principal().getName(X500Principal.RFC2253).split(",")[0]);
+                    boolean selfSigned = false;
+                   try {
+                       c.verify(c.getPublicKey());
+                       selfSigned = true;
+                   } catch (CertificateException | NoSuchAlgorithmException | InvalidKeyException | SignatureException | NoSuchProviderException e) {
+                       // not self signed
+                   }
+                   if (selfSigned) {
                     sb.append(" self-signed");
-                else
-                    sb.append(" signed by ").append(x509.getIssuerX500Principal().getName(X500Principal.RFC2253).split(",")[0]);
-
-               return Optional.of(sb.toString());
-            }
-        }
-
-        return Optional.empty();
+                   } else {
+                       sb.append(" signed by ").append(c.getIssuerX500Principal().getName(X500Principal.RFC2253).split(",")[0]);
+                   };
+                   return sb.toString();
+                });
     }
 
     @Override
     public String moduleName() {
-        return this.modFile.getSecureJar().name();
+        return getMods().get(0).getModId();
     }
 
     @Override
@@ -271,9 +253,4 @@ public class ModFileInfo implements IModFileInfo, IConfigurable {
     public List<String> usesServices() {
         return usesServices;
     }
-
-    @SuppressWarnings("unchecked")
-    private static <E extends Throwable, R> R sneak(Throwable e) throws E {
-        throw (E)e;
-    }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModInfo.java

@@ -19,189 +19,202 @@ import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
 import java.net.URL;
-import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
+import java.util.function.Supplier;
 import java.util.regex.Pattern;
 
 @ApiStatus.Internal
-public record ModInfo(
-        ModFileInfo getOwningFile,
-        IConfigurable getConfig,
-
-        String getModId,
-        String getNamespace,
-        ArtifactVersion getVersion,
-
-        String getDisplayName,
-        String getDescription,
-        Optional<String> getLogoFile,
-        boolean getLogoBlur,
-        Optional<URL> getUpdateURL,
-        Optional<URL> getModURL,
-
-        Holder<List<? extends ModVersion>> dependencies,
-        Holder<List<ForgeFeature.Bound>> forgeFeatures,
-        Map<String, Object> getModProperties
-) implements IModInfo, IConfigurable {
+public class ModInfo implements IModInfo, IConfigurable {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final DefaultArtifactVersion DEFAULT_VERSION = new DefaultArtifactVersion("1");
     private static final Pattern VALID_MODID = Pattern.compile("^[a-z][a-z0-9_]{1,63}$");
     private static final Pattern VALID_NAMESPACE = Pattern.compile("^[a-z][a-z0-9_.-]{1,63}$");
     private static final Pattern VALID_VERSION = Pattern.compile("^\\d+.*");
 
-    public static ModInfo of(ModFileInfo owningFile, IConfigurable config) {
+    private final ModFileInfo owningFile;
+    private final String modId;
+    private final String namespace;
+    private final ArtifactVersion version;
+    private final String displayName;
+    private final String description;
+    private final Optional<String> logoFile;
+    private final boolean logoBlur;
+    private final Optional<URL> updateJSONURL;
+    private final List<? extends IModInfo.ModVersion> dependencies;
+
+    private final List<ForgeFeature.Bound> features;
+    private final Map<String,Object> properties;
+    private final IConfigurable config;
+    private final Optional<URL> modUrl;
+
+    public ModInfo(final ModFileInfo owningFile, final IConfigurable config)
+    {
+        Optional<ModFileInfo> ownFile = Optional.ofNullable(owningFile);
+        this.owningFile = owningFile;
+        this.config = config;
         // These are sourced from the mod specific [[mod]] entry
-        String modId = config.<String>getConfigElement("modId").orElse(null);
-        if (modId == null)
-            throw new InvalidModFileException("Missing modId", owningFile);
-
+        this.modId = config.<String>getConfigElement("modId")
+                .orElseThrow(() -> new InvalidModFileException("Missing modId", owningFile));
         // verify we have a valid modid
-        if (!VALID_MODID.matcher(modId).matches()) {
-            LOGGER.error(LogUtils.FATAL_MARKER, "Invalid modId found in file {} - {} does not match the standard: {}", owningFile.getFile().getFilePath(), modId, VALID_MODID.pattern());
-            throw new InvalidModFileException("Invalid modId found : " + modId, owningFile);
+        if (!VALID_MODID.matcher(this.modId).matches()) {
+            LOGGER.error(LogUtils.FATAL_MARKER, "Invalid modId found in file {} - {} does not match the standard: {}", this.owningFile.getFile().getFilePath(), this.modId, VALID_MODID.pattern());
+            throw new InvalidModFileException("Invalid modId found : " + this.modId, owningFile);
         }
-
-        String namespace = config.<String>getConfigElement("namespace")
-                .orElse(modId);
-
+        this.namespace = config.<String>getConfigElement("namespace")
+                .orElse(this.modId);
         // verify our namespace is valid
-        if (!VALID_NAMESPACE.matcher(namespace).matches()) {
-            LOGGER.error(LogUtils.FATAL_MARKER, "Invalid override namespace found in file {} - {} does not match the standard: {}", owningFile.getFile().getFilePath(), namespace, VALID_NAMESPACE.pattern());
-            throw new InvalidModFileException("Invalid override namespace found : " + namespace, owningFile);
+        if (!VALID_NAMESPACE.matcher(this.namespace).matches()) {
+            LOGGER.error(LogUtils.FATAL_MARKER, "Invalid override namespace found in file {} - {} does not match the standard: {}", this.owningFile.getFile().getFilePath(), this.namespace, VALID_NAMESPACE.pattern());
+            throw new InvalidModFileException("Invalid override namespace found : " + this.namespace, owningFile);
         }
-
-        ArtifactVersion version = config.<String>getConfigElement("version")
-                .map(s -> StringSubstitutor.replace(s, owningFile.getFile()))
+        this.version = config.<String>getConfigElement("version")
+                .map(s -> StringSubstitutor.replace(s, ownFile.map(ModFileInfo::getFile).orElse(null)))
                 .map(DefaultArtifactVersion::new)
                 .orElse(DEFAULT_VERSION);
-
         // verify we have a valid mod version
-        if (!VALID_VERSION.matcher(version.toString()).matches())
-            throw new InvalidModFileException("Illegal version number specified " + version, owningFile);
-
+        if (!VALID_VERSION.matcher(this.version.toString()).matches()) {
+            throw new InvalidModFileException("Illegal version number specified "+this.version, this.getOwningFile());
+        }
         // The remaining properties all default to sensible values and are not essential
-        String displayName = config.<String>getConfigElement("displayName")
-                .orElse(modId);
-
-        String description = config.<String>getConfigElement("description")
+        this.displayName = config.<String>getConfigElement("displayName")
+                .orElse(this.modId);
+        this.description = config.<String>getConfigElement("description")
                 .orElse("MISSING DESCRIPTION")
                 .replace("\r\n", "\n").stripIndent();
-
-        Optional<String> logoFile = Optional.ofNullable(
-                config.<String>getConfigElement("logoFile")
-                        .orElseGet(() -> owningFile.<String>getConfigElement("logoFile").orElse(null))
-        );
-
-        Boolean logoBlur = config.<Boolean>getConfigElement("logoBlur").orElse(null);
-        if (logoBlur == null)
-            logoBlur = owningFile.<Boolean>getConfigElement("logoBlur").orElse(true);
-
-        Optional<URL> updateJSONURL = config.<String>getConfigElement("updateJSONURL")
+        this.logoFile = Optional.ofNullable(config.<String>getConfigElement("logoFile")
+                .orElseGet(() -> ownFile.flatMap(mf -> mf.<String>getConfigElement("logoFile"))
+                        .orElse(null)));
+        this.logoBlur = config.<Boolean>getConfigElement("logoBlur")
+                .orElseGet(() -> ownFile.flatMap(f -> f.<Boolean>getConfigElement("logoBlur"))
+                        .orElse(true));
+        this.updateJSONURL = config.<String>getConfigElement("updateJSONURL")
                 .map(StringUtils::toURL);
-
-        Optional<URL> modUrl = config.<String>getConfigElement("modUrl")
+        this.modUrl = config.<String>getConfigElement("modUrl")
                 .map(StringUtils::toURL);
-
-        // dependencies and features are done after the constructor as they need to reference the ModInfo we are creating
-        List<? extends ModVersion> dependencies = Collections.emptyList();
-        List<ForgeFeature.Bound> forgeFeatures = Collections.emptyList();
-
-        Map<String, Object> modProperties = owningFile.<Map<String, Object>>getConfigElement("modproperties", modId)
-                .map(Collections::unmodifiableMap)
+        // These are sourced from the file rather than the mod-specific block, but with a modid tag
+        this.dependencies = ownFile.map(mfi -> mfi.getConfigList("dependencies", this.modId))
+                .orElse(Collections.emptyList())
+                .stream()
+                .map(dep -> new ModVersion(this, dep))
+                .toList();
+        this.features = ownFile.flatMap(mfi -> mfi.<Map<String, Object>>getConfigElement("features", this.modId))
+                .stream()
+                .flatMap(m->m.entrySet().stream())
+                .map(this::makeBound)
+                .toList();
+        this.properties = ownFile.flatMap(mfi -> mfi.<Map<String, Object>>getConfigElement("modproperties", this.modId))
                 .orElse(Collections.emptyMap());
-
-        return new ModInfo(
-                owningFile, config,
-                modId, namespace, version,
-                displayName, description, logoFile, logoBlur, updateJSONURL, modUrl,
-                new Holder<>(dependencies), new Holder<>(forgeFeatures), modProperties
-        ).setupDependencies().setupForgeFeatures();
-    }
-
-    private ModInfo setupDependencies() {
-        var deps = getOwningFile.getConfigList("dependencies", getModId);
-        if (deps == null || deps.isEmpty()) {
-            dependencies.value = Collections.emptyList();
-            return this;
-        }
-
-        var tmp = new ModVersion[deps.size()];
-        for (int i = 0; i < deps.size(); i++) {
-            tmp[i] = ModVersion.of(this, deps.get(i));
-        }
-        dependencies.value = List.of(tmp);
-        return this;
-    }
-
-    private ModInfo setupForgeFeatures() {
-        var feats = getOwningFile.<Map<String, Object>>getConfigElement("features", getModId).orElse(null);
-        if (feats == null) {
-            forgeFeatures.value = Collections.emptyList();
-            return this;
-        }
-
-        var tmp = new ArrayList<ForgeFeature.Bound>();
-        for (var entry : feats.entrySet()) {
-            if (!(entry.getValue() instanceof String val))
-                throw new InvalidModFileException("Invalid feature bound {" + entry.getValue() + "} for key {" + entry.getKey() + "} only strings are accepted", getOwningFile);
-            tmp.add(new ForgeFeature.Bound(entry.getKey(), val, this));
-        }
-        forgeFeatures.value = List.copyOf(tmp);
-        return this;
     }
 
     @Override
-    public <T> Optional<T> getConfigElement(String key) {
-        return getConfig.getConfigElement(key);
+    public ModFileInfo getOwningFile() {
+        return owningFile;
     }
 
     @Override
-    public <T> Optional<T> getConfigElement(String... key) {
-        return getConfig.getConfigElement(key);
+    public String getModId() {
+        return modId;
     }
 
     @Override
-    public List<? extends IConfigurable> getConfigList(String... key) {
-        return null;
+    public String getDisplayName()
+    {
+        return this.displayName;
+    }
+
+    @Override
+    public String getDescription()
+    {
+        return this.description;
+    }
+
+    @Override
+    public ArtifactVersion getVersion() {
+        return version;
     }
 
     @Override
     public List<? extends IModInfo.ModVersion> getDependencies() {
-        return dependencies.value;
+        return this.dependencies;
+    }
+
+    @Override
+    public String getNamespace() {
+        return this.namespace;
+    }
+
+    @Override
+    public Map<String, Object> getModProperties() {
+        return this.properties;
+    }
+
+    @Override
+    public Optional<URL> getUpdateURL() {
+        return this.updateJSONURL;
+    }
+
+    @Override
+    public Optional<String> getLogoFile()
+    {
+        return this.logoFile;
+    }
+
+    @Override
+    public boolean getLogoBlur()
+    {
+        return this.logoBlur;
+    }
+
+    @Override
+    public IConfigurable getConfig() {
+        return this;
     }
 
     @Override
     public List<? extends ForgeFeature.Bound> getForgeFeatures() {
-        return forgeFeatures.value;
+        return this.features;
     }
 
-    private static final class Holder<T> {
-        private T value;
+    @Override
+    public <T> Optional<T> getConfigElement(final String... key) {
+        return this.config.getConfigElement(key);
+    }
 
-        public Holder(T value) {
-            this.value = value;
+    @Override
+    public List<? extends IConfigurable> getConfigList(final String... key) {
+        return null;
+    }
+
+    @Override
+    public Optional<URL> getModURL() {
+        return modUrl;
+    }
+
+    private ForgeFeature.Bound makeBound(Map.Entry<String, Object> e) {
+        if (e.getValue() instanceof String val) {
+            return new ForgeFeature.Bound(e.getKey(), val, this);
+        } else {
+            throw new InvalidModFileException("Invalid feature bound {" + e.getValue() + "} for key {" + e.getKey() + "} only strings are accepted", this.owningFile);
         }
     }
 
-    private record ModVersion(
-            Holder<IModInfo> owner,
+    class ModVersion implements net.minecraftforge.forgespi.language.IModInfo.ModVersion {
+        private IModInfo owner;
+        private final String modId;
+        private final VersionRange versionRange;
+        private final boolean mandatory;
+        private final Ordering ordering;
+        private final DependencySide side;
+        private final Optional<URL> referralUrl;
 
-            String getModId,
-            VersionRange getVersionRange,
-            boolean isMandatory,
-            Ordering getOrdering,
-            DependencySide getSide,
-            Optional<URL> getReferralURL
-    ) implements IModInfo.ModVersion {
-        public static ModVersion of(IModInfo owner, IConfigurable config) {
-            var modId = config.<String>getConfigElement("modId").orElse(null);
-            if (modId == null)
-                throw new InvalidModFileException("Missing required field modid in dependency", owner.getOwningFile());
-
-            if (modId.equals("forge")) {
+        public ModVersion(final IModInfo owner, final IConfigurable config) {
+            this.owner = owner;
+            this.modId = config.<String>getConfigElement("modId")
+                    .orElseThrow(()->new InvalidModFileException("Missing required field modid in dependency", getOwningFile()));
+            if (this.modId.equals("forge")) {
                 var fileProps = owner.getOwningFile().getFileProperties();
                 // Checking containsKey to avoid a possible exception if the property is not present (due to Collections.emptyMap())
                 if (!fileProps.isEmpty() && fileProps.containsKey(ModFileInfo.NOT_A_FORGE_MOD_PROP)) {
@@ -210,42 +223,74 @@ public record ModInfo(
                     fileProps.remove(ModFileInfo.NOT_A_FORGE_MOD_PROP);
                 }
             }
-
-            boolean mandatory;
-            var mandatoryValue = config.<Boolean>getConfigElement("mandatory");
-            if (mandatoryValue.isPresent())
-                mandatory = mandatoryValue.get();
-            else if (owner.getOwningFile().getFileProperties().containsKey(ModFileInfo.NOT_A_FORGE_MOD_PROP))
-                mandatory = true;
-            else
-                throw new InvalidModFileException("Missing required field mandatory in dependency", owner.getOwningFile());
-
-            var versionRange = config.<String>getConfigElement("versionRange")
+            var mandatory = config.<Boolean>getConfigElement("mandatory");
+            if (mandatory.isPresent()) {
+                this.mandatory = mandatory.get();
+            } else if (owner.getOwningFile().getFileProperties().containsKey(ModFileInfo.NOT_A_FORGE_MOD_PROP)) {
+                this.mandatory = true;
+            } else {
+                throw new InvalidModFileException("Missing required field mandatory in dependency", getOwningFile());
+            }
+            this.versionRange = config.<String>getConfigElement("versionRange")
                     .map(MavenVersionAdapter::createFromVersionSpec)
                     .orElse(UNBOUNDED);
-            var ordering = config.<String>getConfigElement("ordering")
+            this.ordering = config.<String>getConfigElement("ordering")
                     .map(Ordering::valueOf)
                     .orElse(Ordering.NONE);
-            var side = config.<String>getConfigElement("side")
+            this.side = config.<String>getConfigElement("side")
                     .map(DependencySide::valueOf)
                     .orElse(DependencySide.BOTH);
-            var referralUrl = config.<String>getConfigElement("referralUrl")
+            this.referralUrl = config.<String>getConfigElement("referralUrl")
                     .map(StringUtils::toURL);
+        }
 
-            return new ModVersion(
-                    new Holder<>(owner),
-                    modId, versionRange, mandatory, ordering, side, referralUrl
-            );
+
+        @Override
+        public String getModId()
+        {
+            return modId;
         }
 
         @Override
-        public IModInfo getOwner() {
-            return owner.value;
+        public VersionRange getVersionRange()
+        {
+            return versionRange;
         }
 
         @Override
-        public void setOwner(IModInfo newOwner) {
-            owner.value = newOwner;
+        public boolean isMandatory()
+        {
+            return mandatory;
+        }
+
+        @Override
+        public Ordering getOrdering()
+        {
+            return ordering;
+        }
+
+        @Override
+        public DependencySide getSide()
+        {
+            return side;
+        }
+
+        @Override
+        public void setOwner(final IModInfo owner)
+        {
+            this.owner = owner;
+        }
+
+        @Override
+        public IModInfo getOwner()
+        {
+            return owner;
+        }
+
+        @Override
+        public Optional<URL> getReferralURL() {
+            return referralUrl;
         }
     }
+
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModJarMetadata.java

@@ -9,64 +9,49 @@ import cpw.mods.jarhandling.JarMetadata;
 import net.minecraftforge.forgespi.locating.IModFile;
 import java.lang.module.ModuleDescriptor;
 import java.util.Objects;
+
 import org.jetbrains.annotations.ApiStatus;
 
 @ApiStatus.Internal
 public final class ModJarMetadata implements JarMetadata {
-    private static final String AUTOMATIC_MODULE_NAME = "Automatic-Module-Name";
     private IModFile modFile;
-    private String name;
-    private String version;
     private ModuleDescriptor descriptor;
 
-    ModJarMetadata() { }
+    ModJarMetadata() {
+    }
 
     public void setModFile(IModFile file) {
         this.modFile = file;
-        var mods = this.modFile.getModFileInfo().getMods();
-
-        if (!mods.isEmpty()) {
-            var main = mods.get(0);
-            this.name = main.getModId();
-            this.version = main.getVersion().toString();
-        }
-
-        var jar = file.getSecureJar();
-        var aname = jar.moduleDataProvider().getManifest().getMainAttributes().getValue(AUTOMATIC_MODULE_NAME);
-        if (aname != null)
-            this.name = aname;
     }
 
     @Override
     public String name() {
-        return this.name;
+        return modFile.getModFileInfo().moduleName();
     }
 
     @Override
     public String version() {
-        return this.version;
+        return modFile.getModFileInfo().versionString();
     }
 
     @Override
     public ModuleDescriptor descriptor() {
-        if (descriptor != null)
-            return descriptor;
-
+        if (descriptor != null) return descriptor;
         var bld = ModuleDescriptor.newAutomaticModule(name())
-            .version(version())
-            .packages(modFile.getSecureJar().getPackages());
-
-        for (var provider : modFile.getSecureJar().getProviders()) {
-            if (provider.providers().isEmpty())
-                continue;
-
-            bld.provides(provider.serviceName(), provider.providers());
-        }
-
+                .version(version())
+                .packages(modFile.getSecureJar().getPackages());
+        modFile.getSecureJar().getProviders().stream()
+                .filter(p -> !p.providers().isEmpty())
+                .forEach(p -> bld.provides(p.serviceName(), p.providers()));
+        modFile.getModFileInfo().usesServices().forEach(bld::uses);
         descriptor = bld.build();
         return descriptor;
     }
 
+    public IModFile modFile() {
+        return modFile;
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (obj == this) return true;

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModValidator.java

@@ -64,7 +64,7 @@ public class ModValidator {
     }
 
     @NotNull
-    private static List<ModFile> validateFiles(final List<ModFile> mods) {
+    private List<ModFile> validateFiles(final List<ModFile> mods) {
         final List<ModFile> brokenFiles = new ArrayList<>();
         for (Iterator<ModFile> iterator = mods.iterator(); iterator.hasNext();) {
             ModFile modFile = iterator.next();
@@ -106,8 +106,8 @@ public class ModValidator {
 
     private List<EarlyLoadingException.ExceptionData> validateLanguages() {
         List<EarlyLoadingException.ExceptionData> errorData = new ArrayList<>();
-        for (Iterator<ModFile> iterator = this.candidateMods.iterator(); iterator.hasNext();) {
-            var modFile = iterator.next();
+        for (Iterator<ModFile> iterator = this.candidateMods.iterator(); iterator.hasNext(); ) {
+            final ModFile modFile = iterator.next();
             try {
                 modFile.identifyLanguage();
             } catch (EarlyLoadingException e) {

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/ModsFolderLocator.java

@@ -17,6 +17,7 @@ import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Locale;
 

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/NightConfigWrapper.java

@@ -6,8 +6,6 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.electronwill.nightconfig.core.UnmodifiableConfig;
-import com.google.common.collect.ImmutableMap;
-
 import net.minecraftforge.forgespi.language.IConfigurable;
 import net.minecraftforge.forgespi.language.IModFileInfo;
 
@@ -18,12 +16,11 @@ import java.util.Optional;
 import java.util.stream.Collectors;
 
 import org.jetbrains.annotations.ApiStatus;
-import org.jetbrains.annotations.Nullable;
 
 import static java.util.Arrays.asList;
 
 @ApiStatus.Internal
-final class NightConfigWrapper implements IConfigurable {
+class NightConfigWrapper implements IConfigurable {
     private final UnmodifiableConfig config;
     private IModFileInfo file;
 
@@ -31,51 +28,35 @@ final class NightConfigWrapper implements IConfigurable {
         this.config = config;
     }
 
-    private NightConfigWrapper(UnmodifiableConfig config, IModFileInfo file) {
-        this.config = config;
-        this.file = file;
-    }
-
-    void setFile(IModFileInfo file) {
+    NightConfigWrapper setFile(IModFileInfo file) {
         this.file = file;
+        return this;
     }
 
     @Override
-    public <T> Optional<T> getConfigElement(String key) {
-        var path = List.of(key);
-        return Optional.ofNullable(validate(this.config.get(path), path));
-    }
-
-    @Override
+    @SuppressWarnings("unchecked")
     public <T> Optional<T> getConfigElement(final String... key) {
         var path = asList(key);
-        return Optional.ofNullable(validate(this.config.get(path), path));
-    }
-
-    @SuppressWarnings("unchecked")
-    private <T> T validate(@Nullable T value, List<String> path) {
-        if (value instanceof UnmodifiableConfig cfg) {
-            // New Night config doesn't implement valueMap(), so do a copy.
-            var entries = cfg.entrySet();
-            var builder = ImmutableMap.builderWithExpectedSize(entries.size());
-            for (var e : entries)
-                builder.put(e.getKey(), e.getValue());
-            return (T) builder.build();
-        } else if (value instanceof ArrayList<?> al && !al.isEmpty() && al.getFirst() instanceof UnmodifiableConfig) {
-            throw new InvalidModFileException("The configuration path " + path + " is invalid. I wasn't expecting a multi-object list - remove one of the [[ ]]", file);
-        }
-        return value;
+        return this.config.getOptional(path).map(value -> {
+            if (value instanceof UnmodifiableConfig) {
+                return (T) ((UnmodifiableConfig) value).valueMap();
+            } else if (value instanceof ArrayList<?> al && al.size() > 0 && al.get(0) instanceof UnmodifiableConfig) {
+                throw new InvalidModFileException("The configuration path " + path + " is invalid. I wasn't expecting a multi-object list - remove one of the [[ ]]", file);
+            }
+            return (T) value;
+        });
     }
 
     @Override
     public List<? extends IConfigurable> getConfigList(final String... key) {
         final List<String> path = asList(key);
         if (this.config.contains(path) && !(this.config.get(path) instanceof Collection)) {
-            throw new InvalidModFileException("The configuration path " + path + " is invalid. Expecting a collection!", file);
+            throw new InvalidModFileException("The configuration path "+path+" is invalid. Expecting a collection!", file);
         }
         final Collection<UnmodifiableConfig> nestedConfigs = this.config.getOrElse(path, ArrayList::new);
         return nestedConfigs.stream()
-                .map(conf -> new NightConfigWrapper(conf, file))
+                .map(NightConfigWrapper::new)
+                .map(cw->cw.setFile(file))
                 .collect(Collectors.toList());
     }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/moddiscovery/Scanner.java

@@ -21,36 +21,37 @@ import java.nio.file.Path;
 import java.util.List;
 
 @ApiStatus.Internal
-record Scanner(ModFile fileToScan, ModFileScanData result) {
+class Scanner {
     private static final Logger LOGGER = LogUtils.getLogger();
-    private static final boolean DEBUG = LOGGER.isDebugEnabled(LogMarkers.SCAN);
+    private final ModFile fileToScan;
 
-    public Scanner(ModFile fileToScan) {
-        this(fileToScan, new ModFileScanData());
+    public Scanner(final ModFile fileToScan) {
+        this.fileToScan = fileToScan;
     }
 
     public ModFileScanData scan() {
+        ModFileScanData result = new ModFileScanData();
         result.addModFileInfo(fileToScan.getModFileInfo());
-        fileToScan.scanFile(this::fileVisitor);
+        fileToScan.scanFile(p -> fileVisitor(p, result));
         final List<IModLanguageProvider> loaders = fileToScan.getLoaders();
         if (loaders != null) {
-            for (IModLanguageProvider loader : loaders) {
-                if (DEBUG) LOGGER.debug("Scanning {} with language loader {}", fileToScan.getFilePath(), loader.name());
+            loaders.forEach(loader -> {
+                LOGGER.debug(LogMarkers.SCAN, "Scanning {} with language loader {}", fileToScan.getFilePath(), loader.name());
                 loader.getFileVisitor().accept(result);
-            }
+            });
         }
         return result;
     }
 
-    private void fileVisitor(final Path path) {
-        try (InputStream in = Files.newInputStream(path)) {
+    private void fileVisitor(final Path path, final ModFileScanData result) {
+        LOGGER.debug(LogMarkers.SCAN,"Scanning {} path {}", fileToScan, path);
+        try (InputStream in = Files.newInputStream(path)){
             ModClassVisitor mcv = new ModClassVisitor();
             ClassReader cr = new ClassReader(in);
             cr.accept(mcv, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
             mcv.buildData(result.getClasses(), result.getAnnotations());
         } catch (IOException | IllegalArgumentException e) {
             // mark path bad
-            if (DEBUG) LOGGER.warn("Failed scanning {} path {}", fileToScan, path);
         }
     }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ArgumentList.java

@@ -24,8 +24,8 @@ import java.util.function.Supplier;
 @ApiStatus.Internal
 class ArgumentList {
     private static final Logger LOGGER = LogUtils.getLogger();
-    private final List<Supplier<String[]>> entries = new ArrayList<>();
-    private final Map<String, EntryValue> values = new HashMap<>();
+    private List<Supplier<String[]>> entries = new ArrayList<>();
+    private Map<String, EntryValue> values = new HashMap<>();
 
     public static ArgumentList from(String... args) {
         ArgumentList ret = new ArgumentList();
@@ -77,12 +77,8 @@ class ArgumentList {
 
     public String[] getArguments() {
         return entries.stream()
-            .flatMap(e -> Arrays.stream(e.get()))
-            .toArray(String[]::new);
-    }
-
-    public boolean has(String key) {
-        return this.values.containsKey(key);
+            .flatMap(e -> Arrays.asList(e.get()).stream())
+            .toArray(size -> new String[size]);
     }
 
     public boolean hasValue(String key) {
@@ -126,7 +122,7 @@ class ArgumentList {
         return ent.getValue();
     }
 
-    private static final class EntryValue implements Supplier<String[]> {
+    private class EntryValue implements Supplier<String[]> {
         private final String prefix;
         private final String key;
         private final boolean split;

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/CommonDevLaunchHandler.java

@@ -22,10 +22,6 @@ abstract class CommonDevLaunchHandler extends CommonLaunchHandler {
         super(type, prefix);
     }
 
-    protected CommonDevLaunchHandler(String name) {
-        super(name);
-    }
-
     @Override public String getNaming() { return "mcp"; }
     @Override public boolean isProduction() { return false; }
 
@@ -33,40 +29,18 @@ abstract class CommonDevLaunchHandler extends CommonLaunchHandler {
     protected String[] preLaunch(String[] arguments, ModuleLayer layer) {
         super.preLaunch(arguments, layer);
 
-        var args = ArgumentList.from(arguments);
-
-        if (this.module == null) {
-            var entry = args.get("launchEntry");
-            if (entry == null)
-                throw new IllegalArgumentException("When using " + this.name() + " launch target you must specify a --launchEntry argument");
-
-            args.remove("launchEntry");
-
-            int idx = entry.indexOf('/');
-            if (idx == -1) {
-                this.module = "minecraft";
-                this.main = entry;
-            } else {
-                this.module = entry.substring(0, idx);
-                this.main = entry.substring(idx + 1);
-            }
-
-            if (args.has("launchData")) {
-                args.remove("launchData");
-                this.isData = true;
-            }
-        }
-
         if (getDist().isDedicatedServer())
-            return args.getArguments();
+            return arguments;
 
         if (isData())
-            return args.getArguments();
+            return arguments;
+
+        var args = ArgumentList.from(arguments);
 
         String username = args.get("username");
         if (username != null) { // Replace '#' placeholders with random numbers
             Matcher m = Pattern.compile("#+").matcher(username);
-            StringBuilder replaced = new StringBuilder();
+            StringBuffer replaced = new StringBuffer();
             while (m.find()) {
                 m.appendReplacement(replaced, getRandomNumbers(m.group().length()));
             }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/CommonLaunchHandler.java

@@ -7,6 +7,7 @@ package net.minecraftforge.fml.loading.targets;
 
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.api.ILaunchHandlerService;
+import cpw.mods.modlauncher.api.ITransformingClassLoaderBuilder;
 import cpw.mods.modlauncher.api.ServiceRunner;
 import net.minecraftforge.fml.loading.FMLLoader;
 import net.minecraftforge.api.distmarker.Dist;
@@ -18,6 +19,7 @@ import org.slf4j.Logger;
 import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.List;
 
 /**
@@ -29,32 +31,26 @@ import java.util.List;
 public abstract class CommonLaunchHandler implements ILaunchHandlerService {
     protected static final Logger LOGGER = LogUtils.getLogger();
 
-    private final String name;
-    protected Dist dist = Dist.CLIENT;
-    protected boolean isData = false;
-    protected String module;
-    protected String main;
+    protected final LaunchType type;
+    private final String prefix;
 
     protected CommonLaunchHandler(LaunchType type, String prefix) {
-        this(prefix + type.name());
-        this.dist = type.dist();
-        this.isData = type.data();
-        this.module = type.module();
-        this.main = type.main();
+        this.type = type;
+        this.prefix = prefix;
     }
 
-    protected CommonLaunchHandler(String name) {
-        this.name = name;
-    }
-
-    @Override public String name() { return this.name; }
-    public Dist getDist() { return this.dist; }
-    public boolean isData() { return this.isData; }
+    @Override public String name() { return this.prefix + this.type.name(); }
+    public Dist getDist() { return this.type.dist(); }
+    public boolean isData() { return this.type.data(); }
     public boolean isProduction() { return false; }
     public abstract String getNaming();
 
     public abstract List<Path> getMinecraftPaths();
 
+    @Override
+    public void configureTransformationClassLoader(final ITransformingClassLoaderBuilder builder) {
+    }
+
     protected String[] preLaunch(String[] arguments, ModuleLayer layer) {
         URI uri;
         try (var reader = layer.configuration().findModule("net.minecraftforge.fmlloader").orElseThrow().reference().open()) {
@@ -76,15 +72,14 @@ public abstract class CommonLaunchHandler implements ILaunchHandlerService {
     }
 
     protected ServiceRunner makeService(final String[] arguments, final ModuleLayer gameLayer) {
-        return () -> runTarget(this.module, this.main, arguments, gameLayer);
+        return () -> runTarget(this.type.module(), this.type.main(), arguments, gameLayer);
     }
 
     protected record LaunchType(String name, String module, String main, Dist dist, boolean data) {};
     protected static final LaunchType CLIENT          = new LaunchType("client", "minecraft", "net.minecraft.client.main.Main", Dist.CLIENT, false);
-    protected static final LaunchType CLIENT_DATA     = new LaunchType("client_data", "minecraft", "net.minecraft.client.data.Main", Dist.CLIENT, true);
     protected static final LaunchType DATA            = new LaunchType("data",   "minecraft", "net.minecraft.data.Main", Dist.CLIENT, true);
     protected static final LaunchType SERVER          = new LaunchType("server", "minecraft", "net.minecraft.server.Main", Dist.DEDICATED_SERVER, false);
-    protected static final LaunchType SERVER_GAMETEST = new LaunchType("server_gametest", "minecraft", "net.minecraft.gametest.Main", Dist.DEDICATED_SERVER, false);
+    protected static final LaunchType SERVER_GAMETEST = new LaunchType("server_gametest", "forge", "net.minecraftforge.gametest.GameTestMain", Dist.DEDICATED_SERVER, false);
 
     protected void runTarget(String module, String target, final String[] arguments, final ModuleLayer layer) throws Throwable {
         var mod = layer.findModule(module).orElse(null);
@@ -112,7 +107,7 @@ public abstract class CommonLaunchHandler implements ILaunchHandlerService {
             len += 2;
         }
         str = str.substring(0, str.length() - len);
-        var path = Path.of(URI.create(str));
+        var path = Paths.get(URI.create(str));
         return path;
     }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ForgeDevLaunchHandler.java

@@ -9,19 +9,17 @@ import java.util.List;
 import org.jetbrains.annotations.ApiStatus;
 
 @ApiStatus.Internal
-sealed abstract class ForgeDevLaunchHandler extends CommonDevLaunchHandler {
+abstract class ForgeDevLaunchHandler extends CommonDevLaunchHandler {
     private ForgeDevLaunchHandler(LaunchType type) {
         super(type, "forge_dev_");
     }
 
-    private ForgeDevLaunchHandler(String name) {
-        super(name);
-    }
-
     @Override
     public List<Path> getMinecraftPaths() {
-        // The client extra jar is on the classpath we can try locating it using the .mcassetsroot which vanilla uses for loading data
-        var extra = getPathFromResource("assets/.mcassetsroot");
+
+        // The extra jar is on the classpath, so try and pull it out of the legacy classpath
+        var legacyCP = findClassPath();
+        var extra = findJarOnClasspath(legacyCP, "client-extra");
         // Minecraft is an exploded directory, so find it.
         var minecraft = getPathFromResource("net/minecraft/client/Minecraft.class");
         var forge = getPathFromResource("net/minecraftforge/common/MinecraftForge.class");
@@ -35,39 +33,27 @@ sealed abstract class ForgeDevLaunchHandler extends CommonDevLaunchHandler {
         return List.of(filtered);
     }
 
-    public static final class Client extends ForgeDevLaunchHandler {
+    public static class Client extends ForgeDevLaunchHandler {
         public Client() {
             super(CLIENT);
         }
     }
 
-    public static final class ClientData extends ForgeDevLaunchHandler {
-        public ClientData() {
-            super(CLIENT_DATA);
-        }
-    }
-
-    public static final class Data extends ForgeDevLaunchHandler {
+    public static class Data extends ForgeDevLaunchHandler {
         public Data() {
             super(DATA);
         }
     }
 
-    public static final class Server extends ForgeDevLaunchHandler {
+    public static class Server extends ForgeDevLaunchHandler {
         public Server() {
             super(SERVER);
         }
     }
 
-    public static final class ServerGameTest extends ForgeDevLaunchHandler {
+    public static class ServerGameTest extends ForgeDevLaunchHandler {
         public ServerGameTest() {
             super(SERVER_GAMETEST);
         }
     }
-
-    public static final class Custom extends ForgeDevLaunchHandler {
-        public Custom() {
-            super("forge_dev");
-        }
-    }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ForgeDevLocator.java

@@ -35,7 +35,7 @@ import net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider;
 import net.minecraftforge.forgespi.locating.IModLocator;
 
 @ApiStatus.Internal
-public final class ForgeDevLocator extends AbstractModProvider implements IModLocator {
+public class ForgeDevLocator extends AbstractModProvider implements IModLocator {
     private static final String PACK_META = "pack.mcmeta";
 
     @Override
@@ -60,7 +60,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
         return ret;
     }
 
-    private static List<Path> getMods() {
+    private List<Path> getMods() {
         // Forge is an exploded directory as well
         var minecraft = ForgeDevLaunchHandler.getPathFromResource("net/minecraft/client/Minecraft.class");
         var forge = ForgeDevLaunchHandler.getPathFromResource("net/minecraftforge/common/MinecraftForge.class");
@@ -84,31 +84,30 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
         return ret;
     }
 
-    private static List<Path> explodeTestMods(Path path) {
+    private List<Path> explodeTestMods(Path path) {
         var mod = new ArrayList<Path>();
         var memory = Jimfs.newFileSystem();
 
         // First lets find all class files, that have the @Mod annotation and map packages to modids.
         var packages = findTestModPackages(path);
         for (var entry : packages.entrySet()) {
-            var pkg = entry.getKey() + '/';
+            var pkg = entry.getKey();
             var modids = entry.getValue();
 
             // Find resource directories for every mod in this group
-            var paths = new LinkedHashSet<Path>();
-            for (var modid : modids.stream().sorted().toList()) {
+            var resourcePaths = new LinkedHashSet<Path>();
+            for (var modid : modids) {
                 var rsc = path.resolve(modid);
                 if (Files.exists(rsc))
-                    paths.add(rsc);
+                    resourcePaths.add(rsc);
             }
 
             var root = memory.getPath(modids.iterator().next()); // use the first modid as our root
-            buildModsToml(paths, modids, root, pkg.startsWith("net/minecraftforge/debug/client/"));
-            buildPackMeta(paths, root);
-            moveModuleInfo(paths, root);
+            buildModsToml(resourcePaths, modids, root);
+            buildPackMeta(resourcePaths, root);
 
             if (Files.exists(root))
-                paths.add(root);
+                resourcePaths.add(root);
 
             // We want just the class files from the root of the input paths. So make a new union with a filter.
             var classes = UnionHelper.newFileSystem(
@@ -122,10 +121,14 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
                 }, new Path[] { path }
             );
 
-            paths.addFirst(classes.getRootDirectories().iterator().next());
+            // And we want the resources, and none of the classes, just in case things get kinda fucky and somehow a package overlaps a sub package {shading?}
+            var resources = UnionHelper.newFileSystem((name, base) -> !name.endsWith(".class"), resourcePaths.toArray(Path[]::new));
 
             // Union of unions, Yay!
-            var union = UnionHelper.newFileSystem(null, paths.stream().toArray(Path[]::new));
+            var union = UnionHelper.newFileSystem(null, new Path[] {
+                classes.getRootDirectories().iterator().next(),
+                resources.getRootDirectories().iterator().next()
+            });
             mod.add(union.getRootDirectories().iterator().next());
         }
 
@@ -134,7 +137,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
 
     // Find all the @Mods so we can generate tomls, and so we can pick packages. Right now it doesn't allow mods in parent directories,
     // I could make it merge all the way up, but I think this would be fine.
-    private static Map<String, Set<String>> findTestModPackages(Path path) {
+    private Map<String, Set<String>> findTestModPackages(Path path) {
         var mods = new HashMap<String, Set<String>>();
         try (var files = Files.walk(path)) {
             var classes = files
@@ -187,7 +190,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
     }
 
     // Builds or update the mods.toml file for all @Mods in this package
-    private static void buildModsToml(Set<Path> resources, Set<String> modids, Path root, boolean clientOnly) {
+    private void buildModsToml(Set<Path> resources, Set<String> modids, Path root) {
         var toml = resources.stream()
             .map(p -> p.resolve(MODS_TOML))
             .filter(Files::exists)
@@ -205,8 +208,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
         var defaults = Map.of(
             "modLoader", "javafml",
             "loaderVersion", "[0,)",
-            "license", "Doesnt fucking matter",
-            "clientSideOnly", clientOnly
+            "license", "Doesnt fucking matter"
         );
 
         for (var key : defaults.keySet()) {
@@ -224,7 +226,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
         }
 
         for (var modid : modids) {
-            if (modlist.stream().noneMatch(c -> modid.equals(c.get("modId")))) {
+            if (!modlist.stream().anyMatch(c -> modid.equals(c.get("modId")))) {
                 modified = true;
                 var tmp = Config.inMemory();
                 tmp.set("modId", modid);
@@ -246,7 +248,7 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
     }
 
     // This is optional, it just hides a warning screen when starting up. I should probably remove this once I restructure how data gen for test mods work and make it generate there.
-    private static void buildPackMeta(Set<Path> paths, Path root) {
+    private void buildPackMeta(Set<Path> paths, Path root) {
         var existing = paths.stream()
                 .map(p -> p.resolve(PACK_META))
                 .filter(Files::exists)
@@ -272,25 +274,6 @@ public final class ForgeDevLocator extends AbstractModProvider implements IModLo
         }
     }
 
-    private static void moveModuleInfo(Set<Path> paths, Path root) {
-        var existing = paths.stream()
-            .map(p -> p.resolve("module-info.dat"))
-            .filter(Files::exists)
-            .findFirst()
-            .orElse(null);
-
-        if (existing == null)
-            return;
-
-        var target = root.resolve("module-info.class");
-        try {
-            Files.createDirectories(target.getParent());
-            Files.copy(existing, target);
-        } catch (IOException e) {
-            throw new IllegalStateException("Failed to copy module-info.dat to memory: " + target, e);
-        }
-    }
-
     @SuppressWarnings("unchecked")
     private static <E extends Throwable, R> R sneak(Throwable e) throws E {
         throw (E)e;

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ForgeProdLaunchHandler.java

@@ -10,7 +10,7 @@ import java.util.List;
 import org.jetbrains.annotations.ApiStatus;
 
 @ApiStatus.Internal
-sealed abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
+abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
     protected ForgeProdLaunchHandler(LaunchType type) {
         super(type, "forge_");
     }
@@ -18,7 +18,7 @@ sealed abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
     @Override public String getNaming() { return "mcp"; }
     @Override public boolean isProduction() { return true; }
 
-    public static final class Client extends ForgeProdLaunchHandler {
+    public static class Client extends ForgeProdLaunchHandler {
         public Client() {
             super(CLIENT);
         }
@@ -29,7 +29,7 @@ sealed abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
         }
     }
 
-    public static final class Server extends ForgeProdLaunchHandler {
+    public static class Server extends ForgeProdLaunchHandler {
         public Server() {
             super(SERVER);
         }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ForgeUserdevLaunchHandler.java

@@ -8,18 +8,17 @@ package net.minecraftforge.fml.loading.targets;
 import net.minecraftforge.fml.loading.FMLLoader;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.function.BiPredicate;
 import org.jetbrains.annotations.ApiStatus;
 
+import cpw.mods.jarhandling.SecureJar;
+
 @ApiStatus.Internal
-sealed abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
+abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
     private ForgeUserdevLaunchHandler(LaunchType type) {
         super(type, "forge_userdev_");
     }
 
-    private ForgeUserdevLaunchHandler(String name) {
-        super(name);
-    }
-
     @Override
     public List<Path> getMinecraftPaths() {
         var legacyCP = findClassPath();
@@ -27,46 +26,34 @@ sealed abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
 
         // Minecraft is extra jar {resources} + forge jar {patches}
         // The MC extra and forge jars are on the classpath, so try and pull them out
-        var extra = findJarOnClasspath(legacyCP, "client-extra"); // This should be "client-" + vers.mcAndMCPVersion() + "-extra" but FG6 qwerks
+        var extra = findJarOnClasspath(legacyCP, "client-extra");
         var forge = findJarOnClasspath(legacyCP, "forge-" + vers.mcAndForgeVersion());
         // We need to filter the forge jar to just MC code
         var minecraft = CommonDevLaunchHandler.getMinecraftOnly(extra, forge);
         return List.of(minecraft);
     }
 
-    public static final class Client extends ForgeUserdevLaunchHandler {
+    public static class Client extends ForgeUserdevLaunchHandler {
         public Client() {
             super(CLIENT);
         }
     }
 
-    public static final class ClientData extends ForgeUserdevLaunchHandler {
-        public ClientData() {
-            super(CLIENT_DATA);
-        }
-    }
-
-    public static final class Data extends ForgeUserdevLaunchHandler {
+    public static class Data extends ForgeUserdevLaunchHandler {
         public Data() {
             super(DATA);
         }
     }
 
-    public static final class Server extends ForgeUserdevLaunchHandler {
+    public static class Server extends ForgeUserdevLaunchHandler {
         public Server() {
             super(SERVER);
         }
     }
 
-    public static final class ServerGameTest extends ForgeUserdevLaunchHandler {
+    public static class ServerGameTest extends ForgeUserdevLaunchHandler {
         public ServerGameTest() {
             super(SERVER_GAMETEST);
         }
     }
-
-    public static final class Custom extends ForgeUserdevLaunchHandler {
-        public Custom() {
-            super("forge_userdev");
-        }
-    }
 }

fmlloader/src/main/java/net/minecraftforge/fml/loading/targets/ForgeUserdevLocator.java

@@ -12,7 +12,7 @@ import net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider;
 import net.minecraftforge.forgespi.locating.IModLocator;
 
 @ApiStatus.Internal
-public final class ForgeUserdevLocator extends AbstractModProvider implements IModLocator {
+public class ForgeUserdevLocator extends AbstractModProvider implements IModLocator {
     @Override
     public String name() {
         return "forge_userdev_locator";

fmlloader/src/main/java/net/minecraftforge/fml/loading/toposort/StronglyConnectedComponentDetector.java

@@ -25,7 +25,7 @@ import java.util.Set;
  */
 public class StronglyConnectedComponentDetector<T> {
     private final Graph<T> graph;
-    private final Map<T, Integer> ids = new HashMap<>();
+    private Map<T, Integer> ids;
     private T[] elements;
     private int[] dfn;
     private int[] low;
@@ -49,6 +49,7 @@ public class StronglyConnectedComponentDetector<T> {
     private void calculate() {
         components = new HashSet<>();
         int t = 0;
+        ids = new HashMap<>();
         Set<T> nodes = graph.nodes();
         elements = (T[]) new Object[nodes.size()];
         for (T node : nodes) {

fmlloader/src/main/resources/META-INF/services/cpw.mods.modlauncher.api.ILaunchHandlerService

@@ -4,16 +4,12 @@ net.minecraftforge.fml.loading.targets.ForgeProdLaunchHandler$Server
 
 # Mod Developers
 net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$Client
-net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$ClientData
-net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$Custom
 net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$Data
 net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$Server
 net.minecraftforge.fml.loading.targets.ForgeUserdevLaunchHandler$ServerGameTest
 
 #Working on Forge itself
 net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$Client
-net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$ClientData
-net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$Custom
 net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$Data
 net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$Server
 net.minecraftforge.fml.loading.targets.ForgeDevLaunchHandler$ServerGameTest

fmlloader/src/main/resources/META-INF/services/cpw.mods.modlauncher.serviceapi.ILaunchPluginService

@@ -1,4 +1,5 @@
 net.minecraftforge.fml.loading.log4j.SLF4JFixerLaunchPluginService
 net.minecraftforge.fml.loading.RuntimeDistCleaner
 net.minecraftforge.fml.common.asm.RuntimeEnumExtender
+net.minecraftforge.fml.common.asm.ObjectHolderDefinalize
 net.minecraftforge.fml.common.asm.CapabilityTokenSubclass

fmlloader/src/main/resources/log4j2.xml

@@ -4,7 +4,7 @@
     SPDX-License-Identifier: LGPL-2.1-only
 -->
 
-<Configuration status="warn" shutdownHook="disable">
+<Configuration status="warn" packages="net.minecrell.terminalconsole,net.minecrell.terminalconsole.util,com.mojang.util,cpw.mods.modlauncher.log,net.minecraftforge.fml.loading.log4j" shutdownHook="disable">
     <filters>
         <ThresholdFilter level="WARN" onMatch="ACCEPT" onMismatch="NEUTRAL"/>
         <MarkerFilter marker="NETWORK_PACKETS" onMatch="${sys:forge.logging.marker.networking:-DENY}" onMismatch="NEUTRAL"/>

forge-transformers/build.gradle

@@ -1,73 +0,0 @@
-import net.minecraftforge.gradleutils.PomUtils
-
-plugins {
-    id 'java-library'
-    id 'maven-publish'
-    id 'net.minecraftforge.licenser'
-    id 'net.minecraftforge.gradleutils'
-    alias(libs.plugins.apt)
-}
-
-apply from: rootProject.file('build_shared.gradle')
-
-configurations.forEach{ it.transitive = false }
-
-dependencies {
-    compileOnly(libs.jetbrains.annotations)
-
-    implementation(libs.bundles.asm) // Needed by all the black magic
-    implementation(libs.log4j.api)
-    implementation(libs.gson)
-    implementation(libs.modlauncher)
-    implementation(libs.coremods) // Used for ASMAPI (for now)
-
-    testCompileOnly(libs.jetbrains.annotations)
-}
-
-java {
-    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
-    withSourcesJar()
-}
-
-tasks.named('jar', Jar) {
-    manifest {
-        attributes([
-            'Automatic-Module-Name': 'net.minecraftforge.forge.transformers',
-            'Forge-Module-Layer':    'boot'
-        ] as LinkedHashMap)
-        attributes([
-            'Specification-Title':   'Forge Transformers',
-            'Specification-Vendor':  'Forge Development LLC',
-            'Specification-Version': '1',
-            'Implementation-Title':  'Forge Transformers',
-            'Implementation-Vendor': 'Forge Development LLC',
-            'Implementation-Version': FORGE_VERSION
-        ] as LinkedHashMap, 'net/minecraftforge/forge/transformers/')
-    }
-}
-
-tasks.withType(JavaCompile).configureEach {
-    options.compilerArgs << '-Xlint:unchecked'
-}
-
-license {
-    header = rootProject.file('LICENSE-header.txt')
-}
-
-publishing {
-    publications.register('mavenJava', MavenPublication) {
-        from components.java
-        artifactId = 'forge-transformers'
-        pom {
-            name = project.name
-            description = 'Forge-specific transformers unrelated to the FML project.'
-            url = 'https://github.com/MinecraftForge/MinecraftForge'
-            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
-            license PomUtils.Licenses.LGPLv2_1
-        }
-    }
-
-    repositories {
-        maven gradleutils.publishingForgeMaven
-    }
-}

forge-transformers/src/main/java/net/minecraftforge/forge/transformers/FieldToMethodTransformer.java

@@ -1,78 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.forge.transformers;
-
-import cpw.mods.modlauncher.api.ITransformer;
-import cpw.mods.modlauncher.api.ITransformerVotingContext;
-import cpw.mods.modlauncher.api.TransformerVoteResult;
-import net.minecraftforge.coremod.api.ASMAPI;
-import org.jetbrains.annotations.NotNull;
-import org.objectweb.asm.tree.ClassNode;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-record FieldToMethodTransformer(String className, Map<String, String> fields) implements ITransformer<ClassNode> {
-    // TODO [Forge][Transformer] Make this properly data driven or configurable.
-    //      It was hard-coded like this before when using JS CoreMods, though.
-    static final Map<String, Map<String, String>> TARGETS = Map.of(
-        "net.minecraft.world.level.biome.Biome",
-        Map.of(
-            "climateSettings", "getModifiedClimateSettings",
-            "specialEffects", "getModifiedSpecialEffects"
-        ),
-
-        "net.minecraft.world.effect.MobEffectInstance",
-        Map.of(
-            "effect", "getEffect"
-        ),
-
-        "net.minecraft.world.level.block.LiquidBlock",
-        Map.of(
-            "fluid", "getFluid"
-        ),
-
-        "net.minecraft.world.item.BucketItem",
-        Map.of(
-            "content", "getFluid"
-        ),
-
-        "net.minecraft.world.level.block.FlowerPotBlock",
-        Map.of(
-            "potted", "getPotted"
-        )
-    );
-
-    @SuppressWarnings("rawtypes")
-    static List<ITransformer> getAll() {
-        var ret = new ArrayList<ITransformer>(TARGETS.size());
-        for (var entry : TARGETS.entrySet()) {
-            ret.add(new FieldToMethodTransformer(entry.getKey(), entry.getValue()));
-        }
-        return ret;
-    }
-
-    @Override
-    public @NotNull ClassNode transform(ClassNode input, ITransformerVotingContext context) {
-        for (var entry : this.fields.entrySet()) {
-            ASMAPI.redirectFieldToMethod(input, entry.getKey(), entry.getValue());
-        }
-
-        return input;
-    }
-
-    @Override
-    public @NotNull TransformerVoteResult castVote(ITransformerVotingContext context) {
-        return TransformerVoteResult.YES;
-    }
-
-    @Override
-    public @NotNull Set<Target> targets() {
-        return Set.of(Target.targetClass(this.className));
-    }
-}

forge-transformers/src/main/java/net/minecraftforge/forge/transformers/ForgeModTransformers.java

@@ -1,35 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.forge.transformers;
-
-import cpw.mods.modlauncher.api.IEnvironment;
-import cpw.mods.modlauncher.api.ITransformationService;
-import cpw.mods.modlauncher.api.ITransformer;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Set;
-
-public record ForgeModTransformers(String name) implements ITransformationService {
-    public ForgeModTransformers() {
-        this("forge");
-    }
-
-    @Override
-    public void initialize(IEnvironment environment) { }
-
-    @Override
-    public void onLoad(IEnvironment env, Set<String> otherServices) { }
-
-    @Override
-    @SuppressWarnings("rawtypes")
-    public @NotNull List<ITransformer> transformers() {
-        List<ITransformer> transformers = FieldToMethodTransformer.getAll();
-        transformers.add(new MethodRedirector());
-        return transformers;
-    }
-}

forge-transformers/src/main/java/net/minecraftforge/forge/transformers/MethodRedirector.java

@@ -1,142 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.forge.transformers;
-
-import com.google.gson.Gson;
-import com.google.gson.annotations.SerializedName;
-import cpw.mods.modlauncher.api.ITransformer;
-import cpw.mods.modlauncher.api.ITransformerVotingContext;
-import cpw.mods.modlauncher.api.TransformerVoteResult;
-import net.minecraftforge.coremod.api.ASMAPI;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.jetbrains.annotations.NotNull;
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.tree.AbstractInsnNode;
-import org.objectweb.asm.tree.ClassNode;
-import org.objectweb.asm.tree.MethodInsnNode;
-
-import java.io.InputStreamReader;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Set;
-import java.util.concurrent.Callable;
-import java.util.function.UnaryOperator;
-import java.util.stream.Collectors;
-
-// NOTE: THIS IS A SINGLETON!
-record MethodRedirector() implements ITransformer<ClassNode> {
-    private static final Logger LOGGER = LogManager.getLogger();
-    private static final Gson GSON = new Gson();
-
-    private static final Replacement[] REPLACEMENTS = {
-        new Replacement(
-            // finalizeSpawn redirection to ForgeEventFactory.onFinalizeSpawn
-            ASMAPI.MethodType.VIRTUAL,
-            "finalizeSpawn",
-            "(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;",
-            GSON.fromJson(new InputStreamReader(sneak(() -> MethodRedirector.class.getModule().getResourceAsStream("coremods/finalize_spawn_targets.json"))), Target[].class),
-            insn -> ASMAPI.buildMethodCall(
-                ASMAPI.MethodType.STATIC,
-                "net/minecraftforge/event/ForgeEventFactory",
-                "onFinalizeSpawn",
-                "(Lnet/minecraft/world/entity/Mob;Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;"
-            )
-        )
-    };
-
-    private static <T> T sneak(Callable<T> callable) {
-        try {
-            return callable.call();
-        } catch (Exception e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    record Replacement(
-        ASMAPI.MethodType type,
-        String name,
-        String desc,
-        Target[] targets,
-        UnaryOperator<MethodInsnNode> factory
-    ) { }
-
-    record Target(
-        @SerializedName("class") String className,
-        String[] methods
-    ) { }
-
-    @Override
-    public @NotNull TransformerVoteResult castVote(ITransformerVotingContext context) {
-        return TransformerVoteResult.YES;
-    }
-
-    @Override
-    public @NotNull Set<ITransformer.Target> targets() {
-        return Arrays
-            .stream(REPLACEMENTS)
-            .map(Replacement::targets)
-            .flatMap(Arrays::stream)
-            .map(Target::className)
-            .map(ITransformer.Target::targetClass)
-            .collect(Collectors.toUnmodifiableSet());
-    }
-
-    @Override
-    public @NotNull ClassNode transform(ClassNode clazz, ITransformerVotingContext context) {
-        for (var replacement : REPLACEMENTS) {
-            for (var methodString : getClassTargetMethods(clazz, replacement)) {
-                // cut up the string since we've put both the name and desc as the target
-                var splitPos = methodString.indexOf('(');
-                var methodName = methodString.substring(0, splitPos);
-                var methodDesc = methodString.substring(splitPos);
-                var method = ASMAPI.findMethodNode(clazz, methodName, methodDesc);
-
-                if (method == null) {
-                    LOGGER.error("Failed to redirect method call for {}! Method {} not found in class {}! This is a Forge bug, and is likely due to a Minecraft update changing something.", replacement.name, methodString, clazz.name);
-                    continue;
-                }
-
-                for (var insn : method.instructions) {
-                    if (!shouldReplace(insn, replacement)) continue;
-
-                    var methodInsn = (MethodInsnNode) insn;
-                    var redirection = replacement.factory.apply(methodInsn);
-                    LOGGER.debug("Redirecting method call {}{} to {}{} inside of {}.{}", methodInsn.name, methodInsn.desc, redirection.name, redirection.desc, clazz.name, method.name);
-                    ASMAPI.insertInsn(method, methodInsn, redirection, ASMAPI.InsertMode.REMOVE_ORIGINAL);
-                }
-            }
-        }
-
-        return clazz;
-    }
-
-    private static boolean shouldReplace(AbstractInsnNode insn, Replacement replacement) {
-        return insn.getOpcode() == replacement.type.toOpcode()
-            && replacement.name.equals(((MethodInsnNode) insn).name)
-            && replacement.desc.equals(((MethodInsnNode) insn).desc);
-    }
-
-    private static List<String> getClassTargetMethods(ClassNode clazz, Replacement replacement) {
-        for (var t : replacement.targets) {
-            if (!t.className.equals(clazz.name)) continue;
-
-            // declared methods
-            var targets = new ArrayList<>(Arrays.asList(t.methods));
-
-            // synthetic methods
-            for (var method : clazz.methods) {
-                if ((method.access & Opcodes.ACC_SYNTHETIC) != 0)
-                    targets.add(method.name + method.desc);
-            }
-
-            return targets;
-        }
-
-        return List.of();
-    }
-}

forge-transformers/src/main/resources/META-INF/services/cpw.mods.modlauncher.api.ITransformationService

@@ -1 +0,0 @@
-net.minecraftforge.forge.transformers.ForgeModTransformers

forge-transformers/src/main/resources/coremods/finalize_spawn_targets.json

@@ -1,144 +0,0 @@
-[
-    {
-        "class": "net/minecraft/server/commands/RaidCommand",
-        "methods": [
-            "spawnLeader(Lnet/minecraft/commands/CommandSourceStack;)I"
-        ]
-    },
-    {
-        "class": "net/minecraft/server/commands/SummonCommand",
-        "methods": [
-            "createEntity(Lnet/minecraft/commands/CommandSourceStack;Lnet/minecraft/core/Holder$Reference;Lnet/minecraft/world/phys/Vec3;Lnet/minecraft/nbt/CompoundTag;Z)Lnet/minecraft/world/entity/Entity;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/EntityType",
-        "methods": [
-            "create(Lnet/minecraft/server/level/ServerLevel;Ljava/util/function/Consumer;Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/entity/EntitySpawnReason;ZZ)Lnet/minecraft/world/entity/Entity;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/ai/village/VillageSiege",
-        "methods": [
-            "trySpawn(Lnet/minecraft/server/level/ServerLevel;)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/animal/frog/Tadpole",
-        "methods": [
-            
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/animal/horse/SkeletonTrapGoal",
-        "methods": [
-            "createHorse(Lnet/minecraft/world/DifficultyInstance;)Lnet/minecraft/world/entity/animal/horse/AbstractHorse;",
-            "createSkeleton(Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/animal/horse/AbstractHorse;)Lnet/minecraft/world/entity/monster/Skeleton;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/monster/Evoker$EvokerSummonSpellGoal",
-        "methods": [
-            "performSpellCasting()V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/monster/Spider",
-        "methods": [
-            "finalizeSpawn(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/monster/Strider",
-        "methods": [
-            "spawnJockey(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/Mob;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/monster/Zombie",
-        "methods": [
-            "hurtServer(Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/world/damagesource/DamageSource;F)Z",
-            "finalizeSpawn(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/DifficultyInstance;Lnet/minecraft/world/entity/EntitySpawnReason;Lnet/minecraft/world/entity/SpawnGroupData;)Lnet/minecraft/world/entity/SpawnGroupData;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/monster/ZombieVillager",
-        "methods": [
-            
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/npc/CatSpawner",
-        "methods": [
-            "spawnCat(Lnet/minecraft/core/BlockPos;Lnet/minecraft/server/level/ServerLevel;Z)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/npc/Villager",
-        "methods": [
-            "getBreedOffspring(Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/world/entity/AgeableMob;)Lnet/minecraft/world/entity/npc/Villager;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/entity/raid/Raid",
-        "methods": [
-            "joinRaid(Lnet/minecraft/server/level/ServerLevel;ILnet/minecraft/world/entity/raid/Raider;Lnet/minecraft/core/BlockPos;Z)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/NaturalSpawner",
-        "methods": [
-            "spawnCategoryForPosition(Lnet/minecraft/world/entity/MobCategory;Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/world/level/chunk/ChunkAccess;Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/NaturalSpawner$SpawnPredicate;Lnet/minecraft/world/level/NaturalSpawner$AfterSpawnCallback;)V",
-            "spawnMobsForChunkGeneration(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/core/Holder;Lnet/minecraft/world/level/ChunkPos;Lnet/minecraft/util/RandomSource;)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/block/entity/trialspawner/TrialSpawner",
-        "methods": [
-            "spawnMob(Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/core/BlockPos;)Ljava/util/Optional;"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/PatrolSpawner",
-        "methods": [
-            "spawnPatrolMember(Lnet/minecraft/server/level/ServerLevel;Lnet/minecraft/core/BlockPos;Lnet/minecraft/util/RandomSource;Z)Z"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/PhantomSpawner",
-        "methods": [
-            "tick(Lnet/minecraft/server/level/ServerLevel;Z)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/structure/structures/OceanMonumentPieces$OceanMonumentPiece",
-        "methods": [
-            "spawnElder(Lnet/minecraft/world/level/WorldGenLevel;Lnet/minecraft/world/level/levelgen/structure/BoundingBox;III)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/structure/structures/OceanRuinPieces$OceanRuinPiece",
-        "methods": [
-            "handleDataMarker(Ljava/lang/String;Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/util/RandomSource;Lnet/minecraft/world/level/levelgen/structure/BoundingBox;)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/structure/structures/SwampHutPiece",
-        "methods": [
-            "postProcess(Lnet/minecraft/world/level/WorldGenLevel;Lnet/minecraft/world/level/StructureManager;Lnet/minecraft/world/level/chunk/ChunkGenerator;Lnet/minecraft/util/RandomSource;Lnet/minecraft/world/level/levelgen/structure/BoundingBox;Lnet/minecraft/world/level/ChunkPos;Lnet/minecraft/core/BlockPos;)V",
-            "spawnCat(Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/world/level/levelgen/structure/BoundingBox;)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/structure/structures/WoodlandMansionPieces$WoodlandMansionPiece",
-        "methods": [
-            "handleDataMarker(Ljava/lang/String;Lnet/minecraft/core/BlockPos;Lnet/minecraft/world/level/ServerLevelAccessor;Lnet/minecraft/util/RandomSource;Lnet/minecraft/world/level/levelgen/structure/BoundingBox;)V"
-        ]
-    },
-    {
-        "class": "net/minecraft/world/level/levelgen/structure/templatesystem/StructureTemplate",
-        "methods": [
-            
-        ]
-    }
-]

gradle.properties

@@ -1,17 +1,17 @@
 # Sets default memory used for gradle commands. Can be overridden by user or command line properties.
 # This is required to provide enough memory for the Minecraft decompilation process.
-org.gradle.jvmargs=-Xmx6G
+org.gradle.jvmargs=-Xmx3G
 org.gradle.daemon=false
 org.gradle.parallel=true
 
 JAVA_VERSION=21
-MC_VERSION=1.21.9
-MC_NEXT_VERSION=1.22
-MCP_VERSION=20250930.103108
+MC_VERSION=1.20.6
+MC_NEXT_VERSION=1.21
+MCP_VERSION=20240429.135109
 MAPPING_CHANNEL=official
-MAPPING_VERSION=1.21.9
+MAPPING_VERSION=1.20.6
 
-# Set to true before the first build of a new MC version, so we don't do compatibility checks
+// Set to true before the first build of a new MC version, so we don't do compatibility checks
 CHECK_COMPATIBILITY=false
-# Set to true to allow for fuzzy patching. Useful during updateing
-UPDATING=false
+// Set to true to allow for fuzzy patching. Useful during updateing
+UPDATING=false

javafmllanguage/build.gradle

@@ -10,11 +10,9 @@ plugins {
 apply from: rootProject.file('build_shared.gradle')
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
     implementation(project(':fmlloader'))
     implementation(project(':fmlcore'))
-    implementation(libs.unsafe)
-    implementation(libs.securemodules)
 }
 
 java {
@@ -59,7 +57,7 @@ publishing {
             license PomUtils.Licenses.LGPLv2_1
         }
     }
-
+    
     repositories {
         maven gradleutils.publishingForgeMaven
     }

javafmllanguage/src/main/java/net/minecraftforge/fml/common/Mod.java

@@ -12,10 +12,9 @@ import java.lang.annotation.Target;
 import java.util.function.Supplier;
 
 import net.minecraftforge.api.distmarker.Dist;
-import net.minecraftforge.eventbus.api.bus.BusGroup;
+import net.minecraftforge.eventbus.api.IEventBus;
 import net.minecraftforge.fml.Bindings;
 import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
-import org.jspecify.annotations.Nullable;
 
 /**
  * This defines a Mod to FML.
@@ -25,11 +24,12 @@ import org.jspecify.annotations.Nullable;
  */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.TYPE)
-public @interface Mod {
+public @interface Mod
+{
     /**
      * The unique mod identifier for this mod.
-     * <b>Required to be lowercased in the English locale for compatibility. Will be truncated to 64 characters long.</b>
-     * <br>
+     * <b>Required to be lowercased in the english locale for compatibility. Will be truncated to 64 characters long.</b>
+     *
      * This will be used to identify your mod for third parties (other mods), it will be used to identify your mod for registries such as block and item registries.
      * By default, you will have a resource domain that matches the modid. All these uses require that constraints are imposed on the format of the modid.
      */
@@ -61,40 +61,32 @@ public @interface Mod {
         String modid() default "";
 
         /**
-         * Specify an alternative bus to listen to.
-         * <br>
-         * If you know all listeners in this class are for a specific bus, you can set it here to speed up registration.
+         * Specify an alternative bus to listen to
          *
          * @return the bus you wish to listen to
          */
-        Bus bus() default Bus.BOTH;
+        Bus bus() default Bus.FORGE;
 
         enum Bus {
             /**
-             * The main BusGroup that most game events are fired on.
+             * The main Forge Event Bus.
+             *
+             * <p>See {@code MinecraftForge#EVENT_BUS}</p>
              */
             FORGE(Bindings.getForgeBus()),
-
             /**
-             * The mod-specific event BusGroup, usually for mod lifecycle events.
-             * @see FMLJavaModLoadingContext#getModBusGroup()
+             * The mod specific Event bus.
+             * @see FMLJavaModLoadingContext#getModEventBus()
              */
-            MOD(()-> FMLJavaModLoadingContext.get().getModBusGroup()),
+            MOD(()-> FMLJavaModLoadingContext.get().getModEventBus());
 
-            /**
-             * Both the {@link #FORGE} and {@link #MOD} buses. This is slower to register events in your class but
-             * allows you to listen to events from different BusGroup types without needing separate classes annotated
-             * with {@link EventBusSubscriber}.
-             */
-            BOTH(() -> null);
+            private final Supplier<IEventBus> busSupplier;
 
-            private final Supplier<@Nullable BusGroup> busSupplier;
-
-            Bus(Supplier<@Nullable BusGroup> eventBusSupplier) {
+            Bus(final Supplier<IEventBus> eventBusSupplier) {
                 this.busSupplier = eventBusSupplier;
             }
 
-            public Supplier<@Nullable BusGroup> bus() {
+            public Supplier<IEventBus> bus() {
                 return busSupplier;
             }
         }

javafmllanguage/src/main/java/net/minecraftforge/fml/javafmlmod/AutomaticEventSubscriber.java

@@ -7,40 +7,22 @@ package net.minecraftforge.fml.javafmlmod;
 
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
-import net.minecraftforge.eventbus.api.bus.BusGroup;
-import net.minecraftforge.eventbus.api.bus.CancellableEventBus;
-import net.minecraftforge.eventbus.api.bus.EventBus;
-import net.minecraftforge.eventbus.api.event.characteristic.Cancellable;
-import net.minecraftforge.eventbus.api.listener.EventListener;
-import net.minecraftforge.eventbus.api.listener.ObjBooleanBiConsumer;
-import net.minecraftforge.eventbus.api.listener.Priority;
-import net.minecraftforge.eventbus.api.listener.SubscribeEvent;
-import net.minecraftforge.eventbus.internal.Event;
 import net.minecraftforge.fml.Logging;
 import net.minecraftforge.fml.ModContainer;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.Mod.EventBusSubscriber;
 import net.minecraftforge.fml.common.Mod.EventBusSubscriber.Bus;
-import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.forgespi.language.ModFileScanData;
 import net.minecraftforge.forgespi.language.ModFileScanData.AnnotationData;
 import net.minecraftforge.forgespi.language.ModFileScanData.EnumData;
 import net.minecraftforge.fml.loading.FMLEnvironment;
-import net.minecraftforge.unsafe.UnsafeHacks;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.jspecify.annotations.Nullable;
 import org.objectweb.asm.Type;
 
-import java.lang.invoke.LambdaMetafactory;
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.lang.reflect.Method;
-import java.lang.reflect.Modifier;
-import java.util.*;
-import java.util.function.Consumer;
-import java.util.function.Predicate;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
 import java.util.stream.Collectors;
 
 /**
@@ -93,7 +75,7 @@ public class AutomaticEventSubscriber {
             if (Objects.equals(mod.getModId(), modId) && sides.contains(FMLEnvironment.dist)) {
                 try {
                     LOGGER.debug(Logging.LOADING, "Auto-subscribing {} to {}", data.clazz().getClassName(), busTarget);
-                    EventBusSubscriberLogic.register(busTarget.bus().get(), Class.forName(data.clazz().getClassName(), true, loader));
+                    busTarget.bus().get().register(Class.forName(data.clazz().getClassName(), true, loader));
                 } catch (ClassNotFoundException e) {
                     LOGGER.fatal(Logging.LOADING, "Failed to load mod class {} for @EventBusSubscriber annotation", data.clazz(), e);
                     throw new RuntimeException(e);
@@ -106,320 +88,4 @@ public class AutomaticEventSubscriber {
     private static <R> R value(AnnotationData data, String key, R value) {
         return (R)data.annotationData().getOrDefault(key, value);
     }
-
-    /**
-     * This is mostly a carbon copy of EventBus 7's internal EventListenerFactory, with some changes to support adding
-     * to different BusGroups based on the event type, among other things.
-     */
-    private static final class EventBusSubscriberLogic {
-        private EventBusSubscriberLogic() {}
-
-        private static final boolean STRICT_RUNTIME_CHECKS = Boolean.getBoolean("eventbus.api.strictRuntimeChecks");
-
-        /**
-         * If true, performs exhaustive validation on bulk registration to aid debugging.
-         */
-        private static final boolean STRICT_REGISTRATION_CHECKS = STRICT_RUNTIME_CHECKS || Boolean.getBoolean("eventbus.api.strictRegistrationChecks");
-
-        private static final MethodType RETURNS_CONSUMER = MethodType.methodType(Consumer.class);
-        private static final MethodType RETURNS_PREDICATE = MethodType.methodType(Predicate.class);
-        private static final MethodType RETURNS_MONITOR = MethodType.methodType(ObjBooleanBiConsumer.class);
-
-        /** The method type of the {@link Consumer} functional interface ({@code void accept(Object)}) */
-        private static final MethodType CONSUMER_FI_TYPE = MethodType.methodType(void.class, Object.class);
-
-        /** The method type of the {@link Predicate} functional interface ({@code boolean test(Object)}) */
-        private static final MethodType PREDICATE_FI_TYPE = CONSUMER_FI_TYPE.changeReturnType(boolean.class);
-
-        /** The method type of the {@link ObjBooleanBiConsumer} functional interface ({@code void accept(Object, boolean)}) */
-        private static final MethodType MONITOR_FI_TYPE = MethodType.methodType(void.class, Object.class, boolean.class);
-
-        public static void register(@Nullable BusGroup busGroup, Class<?> listenerClass) {
-            if (STRICT_REGISTRATION_CHECKS) registerStrict(busGroup, listenerClass);
-            else registerLenient(busGroup, listenerClass);
-        }
-
-        @SuppressWarnings({"unchecked", "rawtypes"})
-        public static void registerLenient(@Nullable BusGroup busGroup, Class<?> listenerClass) {
-            Method[] declaredMethods = listenerClass.getDeclaredMethods();
-            if (declaredMethods.length == 0)
-                throw new IllegalArgumentException("No declared methods found in " + listenerClass);
-
-            Class<?> firstValidListenerEventType = null;
-
-            int listenersCount = 0;
-            for (var method : declaredMethods) {
-                if (!Modifier.isStatic(method.getModifiers()))
-                    continue;
-
-                if (method.isSynthetic())
-                    continue; // EventBus#89
-
-                int paramCount = method.getParameterCount();
-                if (paramCount == 0 || paramCount > 2)
-                    continue;
-
-                Class<?> returnType = method.getReturnType();
-                if (returnType != void.class && returnType != boolean.class)
-                    continue;
-
-                if (!method.isAnnotationPresent(SubscribeEvent.class))
-                    continue;
-
-                Class<?>[] parameterTypes = method.getParameterTypes();
-                if (!Event.class.isAssignableFrom(parameterTypes[0]))
-                    throw new IllegalArgumentException("First parameter of a @SubscribeEvent method must be an event");
-
-                Class<? extends Event> eventType = (Class<? extends Event>) parameterTypes[0];
-                var subscribeEventAnnotation = method.getAnnotation(SubscribeEvent.class);
-
-                registerListener(busGroup, paramCount, returnType, eventType, subscribeEventAnnotation, method);
-                listenersCount++;
-
-                if (firstValidListenerEventType == null)
-                    firstValidListenerEventType = eventType;
-            }
-
-            if (listenersCount == 0)
-                throw new IllegalArgumentException("No listeners found in " + listenerClass);
-            else if (firstValidListenerEventType == null)
-                throw new IllegalArgumentException("No valid listeners found in " + listenerClass);
-        }
-
-        @SuppressWarnings({"unchecked"})
-        public static void registerStrict(BusGroup busGroup, Class<?> listenerClass) {
-            Class<? extends Event> firstValidListenerEventType = null;
-
-            List<Method> declaredMethods = Arrays.stream(listenerClass.getDeclaredMethods())
-                    .filter(Predicate.not(Method::isSynthetic)) // EventBus#89
-                    .toList();
-            if (declaredMethods.isEmpty()) {
-                var errMsg = "No declared methods found in " + listenerClass.getName();
-                var superClass = listenerClass.getSuperclass();
-                if (superClass != null && superClass != Record.class && superClass != Enum.class) {
-                    errMsg += ". Note that listener inheritance is not supported. " +
-                            "If you are trying to inherit listeners, please use @Override and @SubscribeEvent on the method in the subclass.";
-                }
-                throw fail(listenerClass, errMsg);
-            }
-
-            int listenersCount = 0;
-            for (var method : declaredMethods) {
-                var hasSubscribeEvent = method.isAnnotationPresent(SubscribeEvent.class);
-                int paramCount = method.getParameterCount();
-
-                if (hasSubscribeEvent && (paramCount == 0 || paramCount > 2))
-                    throw fail(method, "Invalid number of parameters: " + paramCount + " (expected 1 or 2)");
-
-                if (paramCount == 0)
-                    continue;
-
-                Class<?> returnType = method.getReturnType();
-                Class<?>[] parameterTypes = method.getParameterTypes();
-                var firstParamExtendsEvent = Event.class.isAssignableFrom(parameterTypes[0]);
-
-                if (!hasSubscribeEvent && firstParamExtendsEvent)
-                    throw fail(method, "Missing @SubscribeEvent annotation");
-
-                if (hasSubscribeEvent) {
-                    var firstParamExtendsCancellable = Cancellable.class.isAssignableFrom(parameterTypes[0]);
-                    var subscribeEventAnnotation = method.getAnnotation(SubscribeEvent.class);
-                    var isMonitoringPriority = subscribeEventAnnotation.priority() == Priority.MONITOR;
-
-                    if (!firstParamExtendsEvent)
-                        throw fail(method, "First parameter of a @SubscribeEvent method must be an event");
-
-                    var eventType = (Class<? extends Event>) parameterTypes[0];
-
-                    if (returnType != void.class && returnType != boolean.class)
-                        throw fail(method, "Invalid return type: " + returnType.getName() + " (expected void or boolean)");
-
-                    if (!Modifier.isStatic(method.getModifiers()))
-                        throw fail(method, "Listener method needs to be static");
-
-                    if (isMonitoringPriority && (returnType == boolean.class || subscribeEventAnnotation.alwaysCancelling()))
-                        throw fail(method, "Monitoring listeners cannot cancel events");
-
-                    if (paramCount == 2) {
-                        if (!firstParamExtendsCancellable)
-                            throw fail(method, "Cancellation-aware monitoring listeners are only valid for cancellable events");
-
-                        if (!boolean.class.isAssignableFrom(parameterTypes[1]))
-                            throw fail(method, "Second parameter of a cancellation-aware monitoring listener must be a boolean");
-
-                        if (!isMonitoringPriority)
-                            throw fail(method, "Cancellation-aware monitoring listeners must have a priority of MONITOR");
-                    }
-
-                    if (!firstParamExtendsCancellable) {
-                        if (subscribeEventAnnotation.alwaysCancelling())
-                            throw fail(method, "Always cancelling listeners are only valid for cancellable events");
-
-                        if (returnType == boolean.class)
-                            throw fail(method, "Return type boolean is only valid for cancellable events");
-                    }
-
-                    registerListener(busGroup, paramCount, returnType, eventType, subscribeEventAnnotation, method);
-                    listenersCount++;
-
-                    if (firstValidListenerEventType == null)
-                        firstValidListenerEventType = eventType;
-                }
-            }
-
-            if (listenersCount == 0)
-                throw fail(listenerClass, "No listeners found");
-            else if (firstValidListenerEventType == null)
-                throw fail(listenerClass, "No valid listeners found");
-        }
-
-        @SuppressWarnings({"unchecked", "rawtypes"})
-        private static EventListener registerListener(@Nullable BusGroup busGroup,
-                                                      int paramCount, Class<?> returnType, Class<? extends Event> eventType,
-                                                      SubscribeEvent subscribeEventAnnotation, Method method) {
-            if (busGroup == null) {
-                busGroup = IModBusEvent.class.isAssignableFrom(eventType)
-                        ? FMLJavaModLoadingContext.get().getModBusGroup()
-                        : BusGroup.DEFAULT;
-            }
-
-            // determine the listener type from its parameters and return type
-            if (paramCount == 1) {
-                var priority = subscribeEventAnnotation.priority();
-                if (returnType == void.class) {
-                    if (Cancellable.class.isAssignableFrom(eventType)) {
-                        // Consumer<Event & Cancellable>
-                        var eventBus = CancellableEventBus.create(busGroup, (Class) eventType);
-                        if (subscribeEventAnnotation.alwaysCancelling()) {
-                            return eventBus.addListener(priority, true, createConsumer(method));
-                        } else {
-                            return eventBus.addListener(priority, createConsumer(method));
-                        }
-                    } else {
-                        // Consumer<Event>
-                        return EventBus.create(busGroup, eventType)
-                                .addListener(priority, createConsumer(method));
-                    }
-                } else {
-                    // Predicate<Event & EventCharacteristic.Cancellable>
-                    if (!Cancellable.class.isAssignableFrom(eventType))
-                        throw fail(method, "Return type boolean is only valid for cancellable events");
-
-                    if (subscribeEventAnnotation.alwaysCancelling())
-                        throw new IllegalArgumentException("Always cancelling listeners must have a void return type");
-
-                    return CancellableEventBus.create(busGroup, (Class) eventType)
-                            .addListener(priority, createPredicate(method));
-                }
-            } else {
-                // ObjBooleanBiConsumer<Event & Cancellable>
-                if (returnType != void.class)
-                    throw new IllegalArgumentException("Cancellation-aware monitoring listeners must have a void return type");
-
-                if (subscribeEventAnnotation.alwaysCancelling())
-                    throw new IllegalArgumentException("Monitoring listeners cannot cancel events");
-
-                return CancellableEventBus.create(busGroup, (Class) eventType).addListener(createMonitor(method));
-            }
-        }
-
-        private static IllegalArgumentException fail(Class<?> listenerClass, String reason) {
-            return new IllegalArgumentException("Failed to register " + listenerClass.getName() + ": " + reason);
-        }
-
-        private static IllegalArgumentException fail(Method mtd, String reason) {
-            return new IllegalArgumentException("Failed to register " + mtd.getDeclaringClass().getName() + "." + mtd.getName() + ": " + reason);
-        }
-
-        @SuppressWarnings("unchecked")
-        private static <T extends Event> Consumer<T> createConsumer(Method callback) {
-            var factoryMH = getOrMakeFactory(callback, RETURNS_CONSUMER, CONSUMER_FI_TYPE, "accept");
-
-            try {
-                return (Consumer<T>) factoryMH.invokeExact();
-            } catch (Exception e) {
-                throw makeRuntimeException(callback, e);
-            } catch (Throwable t) {
-                throw new RuntimeException(t);
-            }
-        }
-
-        @SuppressWarnings("unchecked")
-        private static <T extends Event> Predicate<T> createPredicate(Method callback) {
-            var factoryMH = getOrMakeFactory(callback, RETURNS_PREDICATE, PREDICATE_FI_TYPE, "test");
-
-            try {
-                return (Predicate<T>) factoryMH.invokeExact();
-            } catch (Exception e) {
-                throw makeRuntimeException(callback, e);
-            } catch (Throwable t) {
-                throw new RuntimeException(t);
-            }
-        }
-
-        @SuppressWarnings("unchecked")
-        private static <T extends Event> ObjBooleanBiConsumer<T> createMonitor(Method callback) {
-            var factoryMH = getOrMakeFactory(callback, RETURNS_MONITOR, MONITOR_FI_TYPE, "accept");
-
-            try {
-                return (ObjBooleanBiConsumer<T>) factoryMH.invokeExact();
-            } catch (Exception e) {
-                throw makeRuntimeException(callback, e);
-            } catch (Throwable t) {
-                throw new RuntimeException(t);
-            }
-        }
-
-        private static MethodHandle getOrMakeFactory(Method callback, MethodType factoryReturnType,
-                                                     MethodType fiMethodType, String fiMethodName) {
-            return makeFactory(callback, factoryReturnType, fiMethodType, fiMethodName);
-        }
-
-        private static MethodHandle makeFactory(Method callback,
-                                                MethodType factoryReturnType,
-                                                MethodType fiMethodType, String fiMethodName) {
-            final class DodgyLookup {
-                private DodgyLookup() {}
-                private static final MethodHandles.Lookup INSTANCE;
-                static {
-                    try {
-                        var lookupField = MethodHandles.Lookup.class.getDeclaredField("IMPL_LOOKUP");
-                        UnsafeHacks.setAccessible(lookupField);
-                        INSTANCE = (MethodHandles.Lookup) lookupField.get(null);
-                    } catch (NoSuchFieldException | IllegalAccessException e) {
-                        throw new RuntimeException(e);
-                    }
-                }
-            }
-
-            try {
-                var callbackDeclaredClass = callback.getDeclaringClass();
-                var lookup = DodgyLookup.INSTANCE.in(callbackDeclaredClass);
-                var mh = lookup.unreflect(callback);
-
-                return LambdaMetafactory.metafactory(
-                        lookup, fiMethodName, factoryReturnType, fiMethodType, mh, mh.type()
-                ).getTarget();
-            } catch (Exception e) {
-                throw makeRuntimeException(callback, e);
-            }
-        }
-
-        private static RuntimeException makeRuntimeException(Method callback, Exception e) {
-            return switch (e) {
-                case IllegalAccessException iae -> {
-                    var errMsg = "Failed to create listener";
-                    if (!Modifier.isPublic(callback.getModifiers()))
-                        errMsg += " - is it public?";
-
-                    yield new RuntimeException(errMsg, iae);
-                }
-                case NullPointerException npe -> new RuntimeException(
-                        "Failed to create listener - was given a non-static method without an instance to invoke it with",
-                        npe
-                );
-                default -> new RuntimeException("Failed to create listener", e);
-            };
-        }
-    }
 }

javafmllanguage/src/main/java/net/minecraftforge/fml/javafmlmod/FMLJavaModLanguageProvider.java

@@ -31,8 +31,21 @@ public class FMLJavaModLanguageProvider implements IModLanguageProvider
 {
     private static final Logger LOGGER = LogManager.getLogger();
 
-    private record FMLModTarget(String className, String modId) implements IModLanguageProvider.IModLanguageLoader {
+    private static class FMLModTarget implements IModLanguageProvider.IModLanguageLoader {
         private static final Logger LOGGER = FMLJavaModLanguageProvider.LOGGER;
+        private final String className;
+        private final String modId;
+
+        private FMLModTarget(String className, String modId)
+        {
+            this.className = className;
+            this.modId = modId;
+        }
+
+        public String getModId()
+        {
+            return modId;
+        }
 
         @SuppressWarnings("unchecked")
         @Override
@@ -81,7 +94,7 @@ public class FMLJavaModLanguageProvider implements IModLanguageProvider
                     .filter(ad -> ad.annotationType().equals(MODANNOTATION))
                     .peek(ad -> LOGGER.debug(SCAN, "Found @Mod class {} with id {}", ad.clazz().getClassName(), ad.annotationData().get("value")))
                     .map(ad -> new FMLModTarget(ad.clazz().getClassName(), (String)ad.annotationData().get("value")))
-                    .collect(Collectors.toMap(FMLModTarget::modId, Function.identity(), (a,b)->a));
+                    .collect(Collectors.toMap(FMLModTarget::getModId, Function.identity(), (a,b)->a));
             scanResult.addLanguageLoader(modTargetMap);
         };
     }

javafmllanguage/src/main/java/net/minecraftforge/fml/javafmlmod/FMLJavaModLoadingContext.java

@@ -5,13 +5,11 @@
 
 package net.minecraftforge.fml.javafmlmod;
 
-import net.minecraftforge.eventbus.api.bus.BusGroup;
+import net.minecraftforge.eventbus.api.IEventBus;
 import net.minecraftforge.fml.ModLoadingContext;
 
-/**
- * Use the context provided by your language loader in your mod's constructor
- */
-public class FMLJavaModLoadingContext extends ModLoadingContext {
+public class FMLJavaModLoadingContext extends ModLoadingContext
+{
     private final FMLModContainer container;
 
     FMLJavaModLoadingContext(FMLModContainer container) {
@@ -19,15 +17,13 @@ public class FMLJavaModLoadingContext extends ModLoadingContext {
     }
 
     /**
-     * @return The mod's event bus group, to allow subscription to Mod specific events
+     * @return The mod's event bus, to allow subscription to Mod specific events
      */
-    public BusGroup getModBusGroup() {
-        return container.getModBusGroup();
+    public IEventBus getModEventBus()
+    {
+        return container.getEventBus();
     }
 
-    /**
-     * @return {@link FMLModContainer} by default.
-     */
     @Override
     public FMLModContainer getContainer() {
         return container;
@@ -37,13 +33,7 @@ public class FMLJavaModLoadingContext extends ModLoadingContext {
      * Helper to get the right instance from the {@link ModLoadingContext} correctly.
      * @return The FMLJavaMod language specific extension from the ModLoadingContext
      *
-     * @deprecated use {@link FMLJavaModLoadingContext} in your mod constructor. For example: {@snippet :
-     * @Mod("examplemod")
-     * public final class ExampleMod {
-     *     public ExampleMod(FMLJavaModLoadingContext context) {
-     *          // Use context from the param instead of FMLJavaModLoadingContext.get() or ModLoadingContext.get()
-     *     }
-     * }}
+     * @deprecated use {@link FMLJavaModLoadingContext} in your mod constructor
      */
     @Deprecated(forRemoval = true, since = "1.21.1")
     public static FMLJavaModLoadingContext get() {

javafmllanguage/src/main/java/net/minecraftforge/fml/javafmlmod/FMLModContainer.java

@@ -5,35 +5,32 @@
 
 package net.minecraftforge.fml.javafmlmod;
 
-import net.minecraftforge.eventbus.api.bus.BusGroup;
-import net.minecraftforge.eventbus.api.bus.EventBus;
+import net.minecraftforge.eventbus.EventBusErrorMessage;
+import net.minecraftforge.eventbus.api.BusBuilder;
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.eventbus.api.IEventBus;
+import net.minecraftforge.eventbus.api.IEventListener;
 import net.minecraftforge.fml.ModContainer;
 import net.minecraftforge.fml.ModLoadingException;
 import net.minecraftforge.fml.ModLoadingStage;
-import net.minecraftforge.fml.config.IConfigEvent;
 import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.forgespi.language.ModFileScanData;
-import net.minecraftforge.unsafe.UnsafeHacks;
-
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.Marker;
 import org.apache.logging.log4j.MarkerManager;
 
-import cpw.mods.jarhandling.SecureJar;
-
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.util.Objects;
-import java.util.jar.Attributes;
+import java.util.Optional;
 
 public class FMLModContainer extends ModContainer {
     private static final Logger LOGGER = LogManager.getLogger();
     private static final Marker LOADING = MarkerManager.getMarker("LOADING");
     private final ModFileScanData scanResults;
-    private final BusGroup eventBusGroup;
+    private final IEventBus eventBus;
     private Object modInstance;
     private final Class<?> modClass;
     private final FMLJavaModLoadingContext context = new FMLJavaModLoadingContext(this);
@@ -43,86 +40,24 @@ public class FMLModContainer extends ModContainer {
         LOGGER.debug(LOADING,"Creating FMLModContainer instance for {}", className);
         this.scanResults = modFileScanResults;
         activityMap.put(ModLoadingStage.CONSTRUCT, this::constructMod);
-        this.eventBusGroup = BusGroup.create("modBusFor" + info.getModId());
+        this.eventBus = BusBuilder.builder().setExceptionHandler(this::onEventFailed).setTrackPhases(false).markerType(IModBusEvent.class).useModLauncher().build();
+        this.configHandler = Optional.of(ce->this.eventBus.post(ce.self()));
         this.contextExtension = () -> context;
+
         try {
             var moduleName = info.getOwningFile().moduleName();
             var module = gameLayer.findModule(moduleName)
                 .orElseThrow(() -> new IllegalStateException("Failed to find " + moduleName + " in " + gameLayer));
-
-            openModules(gameLayer, module, info.getOwningFile().getFile().getSecureJar());
-
             modClass = Class.forName(module, className);
-            LOGGER.debug(LOADING,"Loaded modclass {}/{} with {}", modClass.getModule().getName(), modClass.getName(), modClass.getClassLoader());
+            LOGGER.trace(LOADING,"Loaded modclass {} with {}", modClass.getName(), modClass.getClassLoader());
         } catch (Throwable e) {
             LOGGER.error(LOADING, "Failed to load class {}", className, e);
             throw new ModLoadingException(info, ModLoadingStage.CONSTRUCT, "fml.modloading.failedtoloadmodclass", e);
         }
     }
 
-    /**
-     * <pre>
-     * Reads the Add-Exports and Add-Opens attributes (see note) from a mod file and
-     * attempts to apply them. This differers from the JEP in two significant ways:
-     *   1) Instead of opening things to ALL-UNNAMED it instead only opens to the
-     *      mod's module itself. Because I don't want other mods accidently relying
-     *      on transitive behavior
-     *   2) It is read from all mods not just the executable jars.
-     *
-     * From <a href = "https://openjdk.org/jeps/261">JEP 261: Module System</a>
-     *
-     * Two new JDK-specific JAR-file manifest attributes are defined to correspond
-     * to the --add-exports and --add-opens command-line options:
-     *     Add-Exports: &lt;module&gt;/&lt;package&gt;( &lt;module&gt;/&lt;package&gt;)*
-     *     Add-Opens: &lt;module&gt;/&lt;package&gt;( &lt;module&gt;/&lt;package&gt;)*
-     *
-     * The value of each attribute is a space-separated list of slash-separated
-     * module-name/package-name pairs. A &gt;module&lt;/&gt;package&lt; pair in
-     * the value of an Add-Exports attribute has the same meaning as the
-     * command-line option --add-exports &gt;module&lt;/&gt;package&lt;=ALL-UNNAMED.
-     *
-     * A &gt;module&lt;/&gt;package&lt; pair in the value of an Add-Opens attribute has the
-     * same meaning as the command-line option --add-opens &gt;module&lt;/&gt;package&lt;=ALL-UNNAMED.
-     *
-     * Each attribute can occur at most once, in the main section of a MANIFEST.MF file.
-     * A particular pair can be listed more than once. If a specified module was not
-     * resolved, or if a specified package does not exist, then the corresponding pair
-     * is ignored.
-     */
-    private static void openModules(ModuleLayer layer, Module self, SecureJar jar) throws NoSuchMethodException, SecurityException, IllegalAccessException, InvocationTargetException {
-        var manifest = jar.moduleDataProvider().getManifest().getMainAttributes();
-        addOpenOrExports(layer, self, true, manifest);
-        addOpenOrExports(layer, self, false, manifest);
-    }
-
-    private static void addOpenOrExports(ModuleLayer layer, Module self, boolean open, Attributes attrs) throws NoSuchMethodException, SecurityException, IllegalAccessException, InvocationTargetException {
-        var key = open ? "Add-Opens" : "Add-Exports";
-        var entry = attrs.getValue(key);
-        if (entry == null)
-            return;
-
-        for (var pair : entry.split(" ")) {
-            var pts = pair.trim().split("/");
-            if (pts.length == 2) {
-                var target = layer.findModule(pts[0]).orElse(null);
-                if (target == null || !target.getDescriptor().packages().contains(pts[1]))
-                    continue;
-                addOpenOrExport(target, pts[1], self, open);
-            } else {
-                LOGGER.warn(LOADING, "Invalid {} entry in {}: {}", key, self.getName(), pair);
-            }
-        }
-    }
-
-    private static Method implAddExportsOrOpens;
-    private static void addOpenOrExport(Module target, String pkg, Module reader, boolean open) throws NoSuchMethodException, SecurityException, IllegalAccessException, InvocationTargetException {
-        if (implAddExportsOrOpens == null) {
-            implAddExportsOrOpens = Module.class.getDeclaredMethod("implAddExportsOrOpens", String.class, Module.class, boolean.class, boolean.class);
-            UnsafeHacks.setAccessible(implAddExportsOrOpens);
-        }
-
-        LOGGER.info(LOADING, "{} {}/{} to {}", open ? "Opening" : "Exporting", target.getName(), pkg, reader.getName());
-        implAddExportsOrOpens.invoke(target, pkg, reader, open, /*syncVM*/true);
+    private void onEventFailed(IEventBus iEventBus, Event event, IEventListener[] iEventListeners, int i, Throwable throwable) {
+        LOGGER.error(new EventBusErrorMessage(event, i, iEventListeners, throwable));
     }
 
     private void constructMod() {
@@ -166,33 +101,19 @@ public class FMLModContainer extends ModContainer {
         return modInstance;
     }
 
-    public BusGroup getModBusGroup() {
-        return this.eventBusGroup;
+    public IEventBus getEventBus() {
+        return this.eventBus;
     }
 
     @Override
-    protected <T extends IModBusEvent> void acceptEvent(final T e) {
+    protected <T extends Event & IModBusEvent> void acceptEvent(final T e) {
         try {
             LOGGER.trace(LOADING, "Firing event for modid {} : {}", this.getModId(), e);
-            @SuppressWarnings("unchecked")
-            var eventBus = (EventBus<T>) IModBusEvent.getBus(eventBusGroup, e.getClass());
-            eventBus.post(e);
+            this.eventBus.post(e);
             LOGGER.trace(LOADING, "Fired event for modid {} : {}", this.getModId(), e);
         } catch (Throwable t) {
             LOGGER.error(LOADING,"Caught exception during event {} dispatch for modid {}", e, this.getModId(), t);
             throw new ModLoadingException(modInfo, modLoadingStage, "fml.modloading.errorduringevent", t);
         }
     }
-
-    @Override
-    @SuppressWarnings({"rawtypes", "unchecked"})
-    public void dispatchConfigEvent(IConfigEvent event) {
-        var eventBus = (EventBus) EventBus.create(eventBusGroup, event.self().getClass());
-        eventBus.post(event.self());
-    }
-
-    @Override
-    public String toString() {
-        return "FMLModContainer[" + this.getModInfo().getModId() + ", " + this.getClass().getName() + "]";
-    }
 }

lowcodelanguage/build.gradle

@@ -15,7 +15,7 @@ java {
 }
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
 
     implementation(project(':fmlloader'))
     implementation(project(':fmlcore'))

lowcodelanguage/src/main/java/net/minecraftforge/fml/lowcodemod/LowCodeModContainer.java

@@ -6,32 +6,48 @@
 package net.minecraftforge.fml.lowcodemod;
 
 import com.mojang.logging.LogUtils;
+import net.minecraftforge.eventbus.api.Event;
 import net.minecraftforge.fml.IExtensionPoint;
 import net.minecraftforge.fml.ModContainer;
-import net.minecraftforge.fml.loading.LogMarkers;
+import net.minecraftforge.fml.event.IModBusEvent;
 import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.forgespi.language.ModFileScanData;
 import org.slf4j.Logger;
 
-public class LowCodeModContainer extends ModContainer {
-    private static final Logger LOGGER = LogUtils.getLogger();
-    private final Object modInstance;
+import java.util.Objects;
 
-    public LowCodeModContainer(IModInfo info, ModFileScanData modFileScanResults, ModuleLayer gameLayer) {
+import static net.minecraftforge.fml.loading.LogMarkers.LOADING;
+
+public class LowCodeModContainer extends ModContainer
+{
+    private static final Logger LOGGER = LogUtils.getLogger();
+    private final ModFileScanData scanResults;
+    private Object modInstance;
+
+    public LowCodeModContainer(IModInfo info, ModFileScanData modFileScanResults, ModuleLayer gameLayer)
+    {
         super(info);
-        LOGGER.debug(LogMarkers.LOADING, "Creating LowCodeModContainer for {}", info.getModId());
+        LOGGER.debug(LOADING, "Creating LowCodeModContainer for {}", info.getModId());
+        this.scanResults = modFileScanResults;
         this.modInstance = new Object();
         this.contextExtension = () -> null;
         this.extensionPoints.remove(IExtensionPoint.DisplayTest.class);
     }
 
     @Override
-    public boolean matches(Object mod) {
+    public boolean matches(Object mod)
+    {
         return mod == modInstance;
     }
 
     @Override
-    public Object getMod() {
+    public Object getMod()
+    {
         return modInstance;
     }
+
+    @Override
+    protected <T extends Event & IModBusEvent> void acceptEvent(final T e)
+    {
+    }
 }

mclanguage/build.gradle

@@ -10,7 +10,7 @@ plugins {
 apply from: rootProject.file('build_shared.gradle')
 
 dependencies {
-    compileOnly(libs.jetbrains.annotations)
+    compileOnly(libs.nulls)
     implementation(project(':fmlloader'))
     implementation(project(':fmlcore'))
 }

mclanguage/src/main/java/net/minecraftforge/fml/mclanguageprovider/MinecraftModContainer.java

@@ -8,6 +8,8 @@ package net.minecraftforge.fml.mclanguageprovider;
 import net.minecraftforge.fml.ModContainer;
 import net.minecraftforge.forgespi.language.IModInfo;
 
+import java.util.Objects;
+
 public class MinecraftModContainer extends ModContainer {
     private static final String MCMODINSTANCE = "minecraft, the mod";
 
@@ -18,7 +20,7 @@ public class MinecraftModContainer extends ModContainer {
 
     @Override
     public boolean matches(final Object mod) {
-        return MCMODINSTANCE.equals(mod);
+        return Objects.equals(mod, MCMODINSTANCE);
     }
 
     @Override

mclanguage/src/main/java/net/minecraftforge/fml/mclanguageprovider/MinecraftModLanguageProvider.java

@@ -5,21 +5,26 @@
 
 package net.minecraftforge.fml.mclanguageprovider;
 
+import net.minecraftforge.fml.ModContainer;
 import net.minecraftforge.forgespi.language.ILifecycleEvent;
 import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.forgespi.language.IModLanguageProvider;
 import net.minecraftforge.forgespi.language.ModFileScanData;
 import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 
 import java.lang.reflect.InvocationTargetException;
 import java.util.Map;
+import java.util.Objects;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 
 import static net.minecraftforge.fml.Logging.LOADING;
 
-public class MinecraftModLanguageProvider implements IModLanguageProvider {
+import net.minecraftforge.forgespi.language.IModLanguageProvider.IModLanguageLoader;
 
+public class MinecraftModLanguageProvider implements IModLanguageProvider {
+    private static final Logger LOGGER = LogManager.getLogger();
     @Override
     public String name() {
         return "minecraft";
@@ -44,7 +49,7 @@ public class MinecraftModLanguageProvider implements IModLanguageProvider {
                 final Class<?> mcModClass = Class.forName(getClass().getModule(), "net.minecraftforge.fml.mclanguageprovider.MinecraftModContainer");
                 return (T)mcModClass.getConstructor(IModInfo.class).newInstance(info);
             } catch (InstantiationException | IllegalAccessException | NoSuchMethodException | InvocationTargetException e) {
-                LogManager.getLogger().fatal(LOADING, "Unable to load MinecraftModContainer, wut?", e);
+                LOGGER.fatal(LOADING,"Unable to load MinecraftModContainer, wut?", e);
                 throw new RuntimeException(e);
             }
         }

mdk/build.gradle

@@ -2,7 +2,7 @@ plugins {
     id 'eclipse'
     id 'idea'
     id 'maven-publish'
-    id 'net.minecraftforge.gradle' version '[6.0.36,6.2)'
+    id 'net.minecraftforge.gradle' version '[6.0.24,6.2)'
 }
 
 version = mod_version
@@ -22,13 +22,17 @@ minecraft {
     // official   MCVersion             Official field/method names from Mojang mapping files
     // parchment  YYYY.MM.DD-MCVersion  Open community-sourced parameter names and javadocs layered on top of official
     //
+    // You must be aware of the Mojang license when using the 'official' or 'parchment' mappings.
+    // See more information here: https://github.com/MinecraftForge/MCPConfig/blob/master/Mojang.md
+    //
     // Parchment is an unofficial project maintained by ParchmentMC, separate from MinecraftForge
     // Additional setup is needed to use their mappings: https://parchmentmc.org/docs/getting-started
     //
+    // Use non-default mappings at your own risk. They may not always work.
     // Simply re-run your setup task after changing the mappings to update your workspace.
     mappings channel: mapping_channel, version: mapping_version
-
-    // Forge 1.20.6 and newer use official mappings at runtime, so we shouldn't reobf from official to SRG
+    
+    // Tell FG to not automtically create the reobf tasks, as we now use Official mappings at runtime, If you don't use them at dev time then you'll have to fix your reobf yourself.
     reobf = false
 
     // When true, this property will have all Eclipse/IntelliJ IDEA run configurations run the "prepareX" task for the given run configuration before launching the game.
@@ -46,7 +50,8 @@ minecraft {
     // By default, the folder name of a run configuration is the name of the Gradle project containing it.
     // generateRunFolders = true
 
-    // This property enables access transformers for use in development, applied to the Minecraft artifact.
+    // This property enables access transformers for use in development.
+    // They will be applied to the Minecraft artifact.
     // The access transformer file can be anywhere in the project.
     // However, it must be at "META-INF/accesstransformer.cfg" in the final mod jar to be loaded by Forge.
     // This default location is a best practice to automatically put the file in the right place in the final jar.
@@ -60,18 +65,17 @@ minecraft {
         configureEach {
             workingDirectory project.file('run')
 
-            // Optional additional logging. The markers can be added/remove as needed, separated by commas.
+            // Recommended logging data for a userdev environment
+            // The markers can be added/remove as needed separated by commas.
             // "SCAN": For mods scan.
             // "REGISTRIES": For firing of registry events.
             // "REGISTRYDUMP": For getting the contents of all registries.
-//            property 'forge.logging.markers', 'REGISTRIES'
+            property 'forge.logging.markers', 'REGISTRIES'
 
+            // Recommended logging level for the console
+            // You can set various levels here.
+            // Please read: https://stackoverflow.com/questions/2031163/when-to-use-the-different-log-levels
             property 'forge.logging.console.level', 'debug'
-
-            // Recommended for development - enables more descriptive errors at the cost of slower startup and registration.
-            property 'eventbus.api.strictRuntimeChecks', 'true'
-
-//            arg "-mixin.config=${mod_id}.mixins.json"
         }
 
         client {
@@ -106,26 +110,7 @@ sourceSets.main.resources { srcDir 'src/generated/resources' }
 
 repositories {
     // Put repositories for dependencies here
-    mavenCentral()
-    maven {
-        name = 'Forge'
-        url = 'https://maven.minecraftforge.net'
-    }
-    maven {
-        name = 'Minecraft libraries'
-        url = 'https://libraries.minecraft.net'
-    }
-    exclusiveContent {
-        forRepository {
-            maven {
-                name = 'Sponge'
-                url = 'https://repo.spongepowered.org/repository/maven-public'
-            }
-        }
-        filter {
-            includeGroupAndSubgroups('org.spongepowered')
-        }
-    }
+    // ForgeGradle automatically adds the Forge maven and Maven Central for you
 
     // If you have mod jar dependencies in ./libs, you can declare them as a repository like so.
     // See https://docs.gradle.org/current/userguide/declaring_repositories.html#sub:flat_dir_resolver
@@ -142,11 +127,6 @@ dependencies {
     // then special handling is done to allow a setup of a vanilla dependency without the use of an external repository.
     minecraft "net.minecraftforge:forge:${minecraft_version}-${forge_version}"
 
-    // Forge 1.21.6+ uses EventBus 7, which shifts most of its runtime validation to compile-time via an annotation processor
-    // to improve performance in production environments. This line is required to enable said compile-time validation
-    // in your development environment, helping you catch issues early.
-    annotationProcessor 'net.minecraftforge:eventbus-validator:7.0-beta.10'
-
     // Example mod dependency with JEI
     // The JEI API is declared for compile time use, while the full JEI artifact is used at runtime
     // compileOnly "mezz.jei:jei-${mc_version}-common-api:${jei_version}"
@@ -167,7 +147,7 @@ dependencies {
 // A missing property will result in an error. Properties are expanded using ${} Groovy notation.
 // When "copyIdeResources" is enabled, this will also run before the game launches in IDE environments.
 // See https://docs.gradle.org/current/dsl/org.gradle.language.jvm.tasks.ProcessResources.html
-tasks.named('processResources', ProcessResources) {
+tasks.named('processResources', ProcessResources).configure {
     var replaceProperties = [
             minecraft_version: minecraft_version, minecraft_version_range: minecraft_version_range,
             forge_version: forge_version, forge_version_range: forge_version_range,
@@ -183,7 +163,7 @@ tasks.named('processResources', ProcessResources) {
 }
 
 // Example for how to get properties into the manifest for reading at runtime.
-tasks.named('jar', Jar) {
+tasks.named('jar', Jar).configure {
     manifest {
         attributes([
             'Specification-Title'     : mod_id,
@@ -193,7 +173,6 @@ tasks.named('jar', Jar) {
             'Implementation-Version'  : project.jar.archiveVersion,
             'Implementation-Vendor'   : mod_authors
         ])
-//        attributes['MixinConfigs'] = "${mod_id}.mixins.json"
     }
 }
 
@@ -215,7 +194,8 @@ tasks.withType(JavaCompile).configureEach {
     options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
 }
 
-// IntelliJ no longer downloads javadocs and sources by default, this tells Gradle to force IntelliJ to do it.
+// IntelliJ no longer downloads javadocs and sources by default.
+// This tells Gradle to force IDEA to do it.
 idea.module { downloadJavadoc = downloadSources = true }
 
 eclipse {
@@ -225,7 +205,8 @@ eclipse {
     synchronizationTasks 'genEclipseRuns'
 }
 
-// Merge the resources and classes into the same directory, because Java expects modules to be in a single directory.
+// Merge the resources and classes into the same directory. 
+// This is done because java expects modules to be in a single directory.
 // And if we have it in multiple we have to do performance intensive hacks like having the UnionFileSystem
 // This will eventually be migrated to ForgeGradle so modders don't need to manually do it. But that is later.
 sourceSets.each {

mdk/gradle.properties

@@ -1,15 +1,8 @@
-# Sets default memory used for Gradle commands. Can be overridden by user or command line properties.
+# Sets default memory used for gradle commands. Can be overridden by user or command line properties.
 # This is required to provide enough memory for the Minecraft decompilation process.
-org.gradle.jvmargs=-Xmx5G
+org.gradle.jvmargs=-Xmx3G
 org.gradle.daemon=false
 
-# In the case that Gradle needs to fork to recompile, this will set the memory for that process.
-systemProp.net.minecraftforge.gradle.repo.recompile.fork=true
-systemProp.net.minecraftforge.gradle.repo.recompile.fork.args=-Xmx5G
-
-# Opts-out of ForgeGradle automatically adding mavenCentral(), Forge's maven and MC libs maven to the repositories block
-systemProp.net.minecraftforge.gradle.repo.attach=false
-
 
 ## Environment Properties
 

mdk/settings.gradle

@@ -9,5 +9,5 @@ pluginManagement {
 }
 
 plugins {
-    id 'org.gradle.toolchains.foojay-resolver-convention' version '0.10.0'
-}
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '0.7.0'
+}