Revive executable jars for the dedicated server

This has a minor change to development time build scripts. So developers, check the MDK

.gitignore

@@ -34,9 +34,10 @@
 /projects/**/run/
 /projects/**/*.launch
 /repo/
-src/generated/resources/**/.cache/
-src/generated_test/resources/**/.cache/
-src/generated_mdk/resources/**/.cache/
+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-/
@@ -49,3 +50,5 @@ changelog.txt
 *.7z
 /logs/
 
+/ForgeRoot.ipr
+/ForgeRoot.iws

buildSrc/build.gradle

@@ -1,6 +1,6 @@
 repositories {
     maven { url = 'https://maven.minecraftforge.net/' }
-	 mavenCentral()
+    mavenCentral()
 }
 
 dependencies {

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

@@ -0,0 +1,55 @@
+package net.minecraftforge.forge.tasks
+
+import org.gradle.api.tasks.*
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.ConfigurableFileCollection
+import org.gradle.api.file.RegularFileProperty
+
+abstract class BundleList extends DefaultTask {
+    @InputFiles abstract ConfigurableFileCollection getConfig()
+    @InputFile abstract RegularFileProperty getServerBundle()
+    @OutputFile abstract RegularFileProperty getOutput()
+
+    BundleList() {
+        config.setFrom(project.configurations.installer)
+        output.convention(project.layout.buildDirectory.file("$name/output.list"))
+        configure {
+            dependsOn(project.tasks.universalJar)
+            inputs.file(project.tasks.universalJar.archiveFile)
+        }
+    }
+    
+    @TaskAction
+    void run() {
+        def entries = [:] as TreeMap
+        def resolved = project.configurations.installer.resolvedConfiguration.resolvedArtifacts
+        for (var dep : resolved) {
+            def info = Util.getMavenInfoFromDep(dep)
+            //println("$dep.file.sha1\t$info.name\t$info.path")
+            entries.put("$info.art.group:$info.art.name", "$dep.file.sha256\t$info.name\t$info.path")
+        }
+        
+        [
+            project.tasks.universalJar
+        ].forEach{ packed -> 
+            def info = Util.getMavenInfoFromTask(packed)
+            def file = packed.archiveFile.get().asFile
+            entries.put("$info.art.group:$info.art.name:$info.art.classifier", "$file.sha256\t$info.name\t$info.path")
+        }
+        
+        try (def zip = new java.util.zip.ZipFile(serverBundle.get().asFile)) {
+            def entry = zip.getEntry('META-INF/libraries.list')
+            def data = zip.getInputStream(entry).text.split('\n')
+            for (def line : data) {
+                def (sha, artifact, path) = line.split('\t')
+                def (group, name, other) = artifact.split(':', 3)
+                //println("Group: $group Name: $name")
+                def key = "$group:$name"
+                if (!entries.containsKey(key))
+                    entries.put(key, line)
+            }
+        }
+        
+        output.get().asFile.text = entries.values().join('\n')
+    }
+}

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

@@ -1,67 +0,0 @@
-package net.minecraftforge.forge.tasks
-
-import org.gradle.api.tasks.*
-import org.gradle.api.DefaultTask
-import org.gradle.api.file.RegularFileProperty
-import groovy.json.JsonSlurper
-import java.util.zip.ZipEntry
-import java.util.zip.ZipFile
-import java.util.zip.ZipOutputStream
-
-abstract class DevInstallerJar extends DefaultTask {
-    @OutputFile abstract RegularFileProperty getOutput()
-    @InputFile abstract RegularFileProperty getInput()
-    
-    DevInstallerJar() {
-        output.convention(project.layout.buildDirectory.file('libs/' + project.name + '-' + project.version + '-installer-dev.jar'))
-    }
-    
-    @TaskAction
-    protected void exec() {
-        try (def zos = new ZipOutputStream(output.get().asFile.newDataOutputStream())) {
-            def seen = [] as Set
-            def deps = [:] as java.util.TreeMap
-            try (def base = new ZipFile(input.get().asFile)) {
-                base.entries().each { entry ->
-                    zos.putNextEntry(entry)
-                    def data = base.getInputStream(entry).bytes
-                    zos.write(data)
-                    
-                    if (entry.name == 'install_profile.json' || entry.name == 'version.json') {
-                        def json = new JsonSlurper().parse(data)
-                        json.libraries.each { lib ->
-                            deps.put(lib.name, lib.downloads.artifact)
-                        }
-                    }
-                    
-                    if (entry.name.startsWith('maven/'))
-                        seen.add(entry.name.substring(6))
-                }
-            }
-            
-            def resolved = project.configurations.installer.resolvedConfiguration.resolvedArtifacts
-            
-            deps.each { name, info -> 
-                if (seen.contains(info.path))
-                    return
-                
-                def art = resolved.find { "${it.moduleVersion.id.group}:${it.moduleVersion.id.name}:${it.moduleVersion.id.version}" == name }
-                
-                def file = null
-                if (art != null) {
-                    if (!Util.checkExists(info.url))
-                        file = art.file
-                } else {
-                    // TODO download missing things
-                }
-                
-                if (file != null) {
-                    //println('maven/' + info.path)
-                    zos.putNextEntry(new ZipEntry('maven/' + info.path))
-                    zos.write(file.bytes)
-                    seen.add(info.path)
-                }
-            }
-        }
-    }
-}

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

@@ -0,0 +1,24 @@
+package net.minecraftforge.forge.tasks
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.provider.Property
+import org.gradle.api.tasks.*
+
+abstract class ExtractFile extends DefaultTask {
+    @InputFile abstract RegularFileProperty getInput()
+    @Input abstract Property<String> getTarget()
+    @OutputFile abstract RegularFileProperty getOutput()
+
+    @TaskAction
+    protected void exec() {
+        def zip = new java.util.zip.ZipFile(input.get().asFile);
+        def entry = zip.getEntry(target.get())
+        if (entry == null)
+            throw new IllegalStateException(input.get().asFile.absolutePath + " does not contain " + target.get())
+        def stream = zip.getInputStream(entry)
+        output.get().asFile.withOutputStream { out ->
+            stream.transferTo(out)
+        }
+    }
+}

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

@@ -2,21 +2,26 @@ package net.minecraftforge.forge.tasks
 
 import org.gradle.api.tasks.bundling.Zip
 import org.gradle.api.tasks.*
-import org.gradle.api.provider.SetProperty
+import org.gradle.api.DefaultTask
+import org.gradle.api.provider.Property
+import groovy.json.JsonSlurper
 
 abstract class InstallerJar extends Zip {
-    @Input @Optional abstract SetProperty<String> getPackedDependencies()
+    @Input @Optional abstract Property<Boolean> getFat()
+    @Input @Optional abstract Property<Boolean> getOffline()
 
     InstallerJar() {
         archiveClassifier.set('installer')
         archiveExtension.set('jar') // Needs to be Zip task to not override Manifest, so set extension
         destinationDirectory.set(project.layout.buildDirectory.dir('libs'))
+        fat.convention(false)
+        offline.convention(false)
 
         def installerJson = project.tasks.installerJson
         def launcherJson = project.tasks.launcherJson
         def downloadInstaller = project.tasks.downloadInstaller
 
-        dependsOn(installerJson, launcherJson, downloadInstaller)
+        dependsOn(installerJson, launcherJson, downloadInstaller, project.configurations.installer)
         from(installerJson, launcherJson)
 
         from(project.rootProject.file('/src/main/resources/url.png'))
@@ -24,21 +29,128 @@ abstract class InstallerJar extends Zip {
             from(project.zipTree(downloadInstaller.output)) {
                 duplicatesStrategy = 'exclude'
             }
-
-            if (!System.env.TEAMCITY_VERSION) {
-                dependsOn(project.universalJar)
-                from(project.universalJar) {
-                    into '/maven/' + project.group.replace('.', '/') + '/' + project.universalJar.archiveBaseName.get() + '/' + project.version + '/'
+            
+            if (fat.get() || offline.get()) {
+                def cfg = project.tasks.register(name + "Config", Configure)
+                cfg.get().configure {
+                    parent = this
+                    dependsOn(project.tasks.installerJson, project.tasks.launcherJson)
                 }
-
-                packedDependencies.get().forEach {
-                    def jarTask = project.rootProject.getTasks().findByPath(it)
-                    dependsOn(jarTask)
-                    from(jarTask) {
-                        into '/maven/' + jarTask.project.group.replace('.', '/') + '/' + jarTask.archiveBaseName.get() + '/' + jarTask.project.version + '/'
+                dependsOn(cfg)
+            } else {
+                // Things we ALWAYS bundle, this just the server shim jar, because the installer spec only says to extract the file. 
+                // I should make it allow downloads but thats a spec break, and this is just a ~14KB jar
+                [
+                    project.tasks.serverShimJar // Server bootstrap executable jar
+                ].forEach { packed ->
+                    def path = Util.getMavenInfoFromTask(packed).path
+                    from(packed) {
+                        rename { "maven/$path" }
                     }
                 }
             }
         }
     }
+    
+    static abstract class Configure extends DefaultTask {
+        public Zip parent
+        private int count = 0;
+        
+        @TaskAction
+        protected void exec() {
+            def deps = [:] as java.util.TreeMap
+            
+            // Gather all things that need downloading
+            [
+                project.tasks.installerJson, 
+                project.tasks.launcherJson
+            ].each { task ->
+                def json = task.output.get().asFile.json
+                json.libraries.each { lib -> 
+                    deps.put(lib.name, lib.downloads.artifact)
+                    //println(lib.name)
+                }
+            }
+            
+            // First find things we build in this project.
+            [
+                project.tasks.universalJar, // Forge runtime code
+                project.tasks.serverShimJar // Shim jar for dedicated server
+            ].forEach { packed ->
+                def name = Util.getMavenInfoFromTask(packed).name
+                def info = deps.remove(name)
+                if (info != null) {
+                    println("Adding: $packed.path $name")
+                    parent.from(packed) {
+                        rename { "maven/$info.path" }
+                    }
+                }
+            }
+            
+            // Find any artifacts from the 'installer' config
+            // This config specifies the runtime files we intend for the interaller to have.
+            // And are typically what we would be developing and testing alongside Forge. 
+            // So we may have local modified versions
+            def cfg = project.configurations.installer
+            while (cfg != null) {
+                //println('')
+                def resolved = cfg.resolvedConfiguration.resolvedArtifacts
+                int found = 0
+                for (var dep : resolved) {
+                    def name = Util.getMavenInfoFromDep(dep).name
+                    def info = deps.remove(name)
+                    if (info == null) {
+                        //println("Skipping: $name")
+                        continue
+                    }
+                    //println("-$name")
+                    found++
+                    addFile(dep.file, info)
+                }
+                
+                if (deps.isEmpty()) {
+                    cfg = null
+                    continue
+                }
+                
+                // Prevent infinite loops if something fucky happens
+                if (found == 0)
+                    throw new IllegalStateException("Failed to find any installer dependencies") 
+                
+                def seen = [] as Set
+                cfg = project.configurations.detachedConfiguration()
+                cfg.transitive = false
+                for (def key : deps.keySet()) {
+                    def (group, artifact, other) = key.split(':', 3)
+                    // Only resolve unique group:artifact so we don't get version overrides
+                    if (seen.add(group + ':' + artifact)) {
+                        //println("+$key")
+                        cfg.dependencies.add(project.dependencies.create(key))
+                    }
+                }
+            }
+        }
+        
+        void addFile(file, info) {
+            def pack = parent.offline.get() || info.url.isEmpty()
+            
+            // If it's a offline jar just always pack
+            if (!pack) {
+                try {
+                    def remote = new URL("${info.url}.sha1").getText('UTF-8')
+                    pack = !info.sha1.equals(remote)
+                } catch (FileNotFoundException e) {
+                    pack = !info.url.startsWith('https://libraries.minecraft.net/')
+                    // Oh noes its not there!
+                }
+            }
+            
+            if (pack) {
+                println("Adding: $file.absolutePath")
+                parent.from(file) {
+                    rename { "maven/$info.path" }
+                }
+            }
+        }
+    }
 }

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

@@ -13,7 +13,6 @@ import java.nio.file.Files
 abstract class InstallerJson extends DefaultTask {
     @OutputFile abstract RegularFileProperty getOutput()
     @InputFiles abstract ConfigurableFileCollection getInput()
-    @Input @Optional abstract SetProperty<String> getPackedDependencies()
     @Input @Optional final Map<String, Object> libraries = new LinkedHashMap<>()
     @Input Map<String, Object> json = new LinkedHashMap<>()
     @InputFile abstract RegularFileProperty getIcon()
@@ -23,29 +22,19 @@ abstract class InstallerJson extends DefaultTask {
     @Input abstract Property<String> getWelcome()
 
     InstallerJson() {
-        getLauncherJsonName().convention('/version.json')
-        getLogo().convention('/big_logo.png')
-        getMirrors().convention('https://files.minecraftforge.net/mirrors-2.0.json')
-        getWelcome().convention("Welcome to the simple ${project.name.capitalize()} installer.")
-                
-        getOutput().convention(project.layout.buildDirectory.file('install_profile.json'))
-
-        ['client', 'server'].each { side ->
-            ['slim', 'extra'].each { type ->
-                def tsk = project.tasks.getByName("download${side.capitalize()}${type.capitalize()}")
-                dependsOn(tsk)
-                input.from(tsk.output)
-            }
-            def tsk = project.tasks.getByName("create${side.capitalize()}SRG")
-            dependsOn(tsk)
-            input.from(tsk.output)
-        }
-
+        launcherJsonName.convention('/version.json')
+        logo.convention('/big_logo.png')
+        mirrors.convention('https://files.minecraftforge.net/mirrors-2.0.json')
+        welcome.convention("Welcome to the ${project.name.capitalize()} installer.")
+        output.convention(project.layout.buildDirectory.file('libs/install_profile.json'))
         
         project.afterEvaluate {
-            (packedDependencies.get().collect{ project.rootProject.tasks.findByPath(it) } + [project.universalJar]).forEach {
-                dependsOn(it)
-                input.from it.archiveFile
+            [
+                project.tasks.universalJar,
+                project.tasks.serverShimJar
+            ].forEach { packed ->
+                dependsOn(packed)
+                input.from packed.archiveFile
             }
         }
     }
@@ -53,17 +42,19 @@ abstract class InstallerJson extends DefaultTask {
     @TaskAction
     protected void exec() {
         def libs = libraries
-        for (def child : packedDependencies.get().collect{ project.rootProject.tasks.findByPath(it) } + [project.universalJar]) {
-            def dep = Util.getMavenDep(child)
-            def path = Util.getMavenPath(child)
-            libs.put(dep.toString(), [
-                name: dep,
+        [
+            project.tasks.universalJar,
+            project.tasks.serverShimJar
+        ].forEach { packed ->
+            def info = Util.getMavenInfoFromTask(packed)
+            libs.put(info.name, [
+                name: info.name,
                 downloads: [
                     artifact: [
-                        path: path,
-                        url: "https://maven.minecraftforge.net/${path}",
-                        sha1: child.archiveFile.get().asFile.sha1(),
-                        size: child.archiveFile.get().asFile.length()
+                        path: info.path,
+                        url: "https://maven.minecraftforge.net/$info.path",
+                        sha1: packed.archiveFile.get().asFile.sha1(),
+                        size: packed.archiveFile.get().asFile.length()
                     ]
                 ]
             ])

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

@@ -16,59 +16,63 @@ abstract class LauncherJson extends DefaultTask {
     @OutputFile abstract RegularFileProperty getOutput()
     @InputFiles abstract ConfigurableFileCollection getInput()
     @Input Map<String, Object> json = new LinkedHashMap<>()
-    @Input @Optional abstract SetProperty<String> getPackedDependencies()
-    
-    @Internal final vanilla = project.project(':mcp').file('build/mcp/downloadJson/version.json')
-    @Internal final timestamp = iso8601Now()
-    @Internal final comment = [
-        "Please do not automate the download and installation of Forge.",
-        "Our efforts are supported by ads from the download page.",
-        "If you MUST automate this, please consider supporting the project through https://www.patreon.com/LexManos/"
-    ]
-    @Internal final id = "${project.rootProject.ext.MC_VERSION}-${project.name}${project.version.substring(project.rootProject.ext.MC_VERSION.length())}"
 
     LauncherJson() {
-        getOutput().convention(project.layout.buildDirectory.file('version.json'))
+        output.convention(project.layout.buildDirectory.file('libs/version.json'))
 
-        dependsOn(':fmlloader:jar', 'universalJar')
-        getInput().from(project.tasks.universalJar.archiveFile,
-                project.project(':fmlloader').jar.archiveFile,
-                vanilla)
-                
-        project.afterEvaluate {
-            packedDependencies.get().forEach {
-                def jarTask = project.rootProject.tasks.findByPath(it)
-                dependsOn(jarTask)
-                input.from jarTask.archiveFile
+        dependsOn(project.tasks.universalJar)
+        input.from(project.tasks.universalJar.archiveFile)
+        input.from(project.configurations.installer)
+        configure {
+            def mc    = project.rootProject.ext.MC_VERSION
+            def forge = project.rootProject.ext.FORGE_VERSION
+            def timestamp = iso8601Now()
+            json.putAll([
+                _comment: [
+                    "Please do not automate the download and installation of Forge.",
+                    "Our efforts are supported by ads from the download page.",
+                    "If you MUST automate this, please consider supporting the project through https://www.patreon.com/LexManos/"
+                ],
+                id: "$mc-$project.name$forge",
+                time: timestamp,
+                releaseTime: timestamp,
+                inheritsFrom: mc,
+                type: 'release',
+                logging: [:],
+                mainClass: '',
+                libraries: []
+            ] as LinkedHashMap)
+            
+            [
+                project.tasks.universalJar
+            ].forEach { packed ->
+                dependsOn(packed)
+                input.from packed.archiveFile
             }
         }
     }
 
     @TaskAction
     protected void exec() {
-        if (!json.libraries)
-            json.libraries = []
-        def libs = [:]
-        getArtifacts(project, project.configurations.installer, false).each { key, lib -> libs[key] = lib }
-        getArtifacts(project, project.configurations.moduleonly, false).each { key, lib -> libs[key] = lib }
-
-        packedDependencies.get().collect{ project.rootProject.tasks.findByPath(it) }.forEach {
-            def path = Util.getMavenPath(it)
-            def key = Util.getMavenDep(it)
-            
-            libs[key] = [
-                name: key,
+        [
+            project.tasks.universalJar
+        ].forEach { packed ->
+            def info = Util.getMavenInfoFromTask(packed)
+            json.libraries.add([
+                name: info.name,
                 downloads: [
                     artifact: [
-                        path: path,
-                        url: "https://maven.minecraftforge.net/${path}",
-                        sha1: it.archiveFile.get().asFile.sha1(),
-                        size: it.archiveFile.get().asFile.length()
+                        path: info.path,
+                        url: "https://maven.minecraftforge.net/$info.path",
+                        sha1: packed.archiveFile.get().asFile.sha1(),
+                        size: packed.archiveFile.get().asFile.length()
                     ]
                 ]
-            ]
+            ])
+        }
+        getArtifacts(project, project.configurations.installer).each { key, lib -> 
+            json.libraries.add(lib)
         }
-        libs.each { key, lib -> json.libraries.add(lib) }
         Files.writeString(output.get().asFile.toPath(), new JsonBuilder(json).toPrettyString())
     }
 }

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

@@ -26,16 +26,6 @@ abstract class SetupCheckJarCompatibility extends DefaultTask {
     @TaskAction
     void run() {
         def inputVersion = inputVersion.get()
-        def fmlLibs = project.configurations.detachedConfiguration(project.PACKED_DEPS.collect {
-            def artifactId = it.split(':')[1]
-            return project.dependencies.create("net.minecraftforge:${artifactId}:${inputVersion}")
-        }.toArray(Dependency[]::new))
-
-        project.tasks.named('checkJarCompatibility') {
-            baseLibraries.from(project.provider {
-                fmlLibs.resolvedConfiguration.lenientConfiguration.files
-            })
-        }
 
         def baseForgeUserdev = project.layout.buildDirectory.dir(name).map { it.file("forge-${inputVersion}-userdev.jar") }.get().asFile
         project.rootProject.extensions.download.run {

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

@@ -16,25 +16,33 @@ import java.util.zip.ZipInputStream
 public class Util {
     static final ASM_LEVEL = Opcodes.ASM9
 
-	static void init() {
-		File.metaClass.sha1 = { ->
-			MessageDigest md = MessageDigest.getInstance('SHA-1')
-			delegate.eachByte 4096, {bytes, size ->
-				md.update(bytes, 0, size)
-			}
-			return md.digest().collect {String.format "%02x", it}.join()
-		}
+    static void init() {
+        File.metaClass.sha1 = { ->
+            MessageDigest md = MessageDigest.getInstance('SHA-1')
+            delegate.eachByte 4096, {bytes, size ->
+                md.update(bytes, 0, size)
+            }
+            return md.digest().collect {String.format "%02x", it}.join()
+        }
         File.metaClass.getSha1 = { !delegate.exists() ? null : delegate.sha1() }
+        File.metaClass.sha256 = { ->
+            MessageDigest md = MessageDigest.getInstance('SHA-256')
+            delegate.eachByte 4096, {bytes, size ->
+                md.update(bytes, 0, size)
+            }
+            return md.digest().collect {String.format "%02x", it}.join()
+        }
+        File.metaClass.getSha256 = { !delegate.exists() ? null : delegate.sha256() }
 
-		File.metaClass.json = { -> new JsonSlurper().parseText(delegate.text) }
+        File.metaClass.json = { -> new JsonSlurper().parseText(delegate.text) }
         File.metaClass.getJson = { return delegate.exists() ? new JsonSlurper().parse(delegate) : [:] }
         File.metaClass.setJson = { json -> delegate.text = new JsonBuilder(json).toPrettyString() }
 
-		Date.metaClass.iso8601 = { ->
-			def format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
-			def result = format.format(delegate)
-			return result[0..21] + ':' + result[22..-1]
-		}
+        Date.metaClass.iso8601 = { ->
+            def format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
+            def result = format.format(delegate)
+            return result[0..21] + ':' + result[22..-1]
+        }
 
         String.metaClass.rsplit = { String del, int limit = -1 ->
             def lst = new ArrayList()
@@ -47,100 +55,117 @@ public class Util {
             lst.add(0, tmp)
             return lst
         }
-	}
-
-	public static String[] getClasspath(project, libs, artifact) {
-		def ret = []
-		artifactTree(project, artifact).each { key, lib ->
-			libs[lib.name] = lib
-			if (lib.name != artifact)
-				ret.add(lib.name)
-		}
-		return ret
-	}
-
-	public static def getArtifacts(project, config, classifiers) {
-		def ret = [:]
-		config.resolvedConfiguration.resolvedArtifacts.each {
-			def art = [
-				group: it.moduleVersion.id.group,
-				name: it.moduleVersion.id.name,
-				version: it.moduleVersion.id.version,
-				classifier: it.classifier,
-				extension: it.extension,
-				file: it.file
-			]
-			def key = art.group + ':' + art.name
-			def folder = "${art.group.replace('.', '/')}/${art.name}/${art.version}/"
-			def filename = "${art.name}-${art.version}"
-			if (art.classifier != null)
-				filename += "-${art.classifier}"
-			filename += ".${art.extension}"
-			def path = "${folder}${filename}"
-			def url = "https://libraries.minecraft.net/${path}"
-			if (!checkExists(url)) {
-				url = "https://maven.minecraftforge.net/${path}"
-			}
-			ret[key] = [
-				name: "${art.group}:${art.name}:${art.version}" + (art.classifier == null ? '' : ":${art.classifier}") + (art.extension == 'jar' ? '' : "@${art.extension}"),
-				downloads: [
-					artifact: [
-						path: path,
-						url: url,
-						sha1: sha1(art.file),
-						size: art.file.length()
-					]
-				]
-			]
-		}
-		return ret
-	}
-
-    public static def getMavenPath(task) {
-        def classifier = task.archiveClassifier.get()
-        def dep = "${task.project.group}:${task.project.name}:${task.project.version}" + (classifier == '' ? '' : ':' + classifier)
-        return "${task.project.group.replace('.', '/')}/${task.project.name}/${task.project.version}/${task.project.name}-${task.project.version}".toString() + (classifier == '' ? '' : '-' + classifier) + '.jar'
     }
 
-    public static def getMavenDep(task) {
-        def classifier = task.archiveClassifier.get()
-        return "${task.project.group}:${task.project.name}:${task.project.version}" + (classifier == '' ? '' : ':' + classifier)
+    public static String[] getClasspath(project, libs, artifact) {
+        def ret = []
+        artifactTree(project, artifact).each { key, lib ->
+            libs[lib.name] = lib
+            if (lib.name != artifact)
+                ret.add(lib.name)
+        }
+        return ret
     }
 
-	public static def iso8601Now() { new Date().iso8601() }
+    public static def getArtifacts(project, config) {
+        def ret = [:]
+        config.resolvedConfiguration.resolvedArtifacts.each { dep ->
+            def info = getMavenInfoFromDep(dep)
+            def url = "https://libraries.minecraft.net/$info.path"
+            if (!checkExists(url))
+                url = "https://maven.minecraftforge.net/$info.path"
+                
+            ret[info.key] = [
+                name: info.name,
+                downloads: [
+                    artifact: [
+                        path: info.path,
+                        url: url,
+                        sha1: dep.file.sha1(),
+                        size: dep.file.length()
+                    ]
+                ]
+            ]
+        }
+        return ret
+    }
+    
+    public static Map getMavenInfoFromDep(dep) {
+        return getMavenInfoFromMap([
+            group: dep.moduleVersion.id.group,
+            name: dep.moduleVersion.id.name,
+            version: dep.moduleVersion.id.version,
+            classifier: dep.classifier,
+            extension: dep.extension
+        ])
+    }
+    public static Map getMavenInfoFromTask(task) {
+        return getMavenInfoFromMap([
+            group: task.project.group,
+            name: task.project.name,
+            version: task.project.version,
+            classifier: task.archiveClassifier.get(),
+            extension: task.archiveExtension.get()
+        ])
+    }
+    
+    private static Map getMavenInfoFromMap(art) {
+        def key = "$art.group:$art.name"
+        def name = "$art.group:$art.name:$art.version"
+        def path = "${art.group.replace('.', '/')}/$art.name/$art.version/$art.name-$art.version"
+        if (art.classifier != null) {
+            name += ":$art.classifier"
+            path += "-$art.classifier"
+        }
+        if (!'jar'.equals(art.extension)) {
+            name += "@$art.extension"
+            path += ".$art.extension"
+        } else {
+            path += ".jar"
+        }
+        return [
+            key: key,
+            name: name,
+            path: path,
+            art: art
+        ]
+    }
 
-	public static def sha1(file) {
-		MessageDigest md = MessageDigest.getInstance('SHA-1')
-		file.eachByte 4096, {bytes, size ->
-			md.update(bytes, 0, size)
-		}
-		return md.digest().collect {String.format "%02x", it}.join()
-	}
+    public static def iso8601Now() { new Date().iso8601() }
 
-	private static def artifactTree(project, artifact) {
-		if (!project.ext.has('tree_resolver'))
-			project.ext.tree_resolver = 1
-		def cfg = project.configurations.create('tree_resolver_' + project.ext.tree_resolver++)
-		def dep = project.dependencies.create(artifact)
-		cfg.dependencies.add(dep)
-		def files = cfg.resolve()
-		return getArtifacts(project, cfg, true)
-	}
+    public static def sha1(file) {
+        MessageDigest md = MessageDigest.getInstance('SHA-1')
+        file.eachByte 4096, {bytes, size ->
+            md.update(bytes, 0, size)
+        }
+        return md.digest().collect {String.format "%02x", it}.join()
+    }
 
-	static boolean checkExists(url) {
-		try {
-			def code = new URL(url).openConnection().with {
-				requestMethod = 'HEAD'
-				connect()
-				responseCode
-			}
-			return code == 200
-		} catch (Exception e) {
-			if (e.toString().contains('unable to find valid certification path to requested target'))
-				throw new RuntimeException('Failed to connect to ' + url + ': Missing certificate root authority, try updating java')
-			throw e
-		}
-	}
+    private static def artifactTree(project, artifact, transitive = true) {
+        if (!project.ext.has('tree_resolver'))
+            project.ext.tree_resolver = 1
+        def cfg = project.configurations.create('tree_resolver_' + project.ext.tree_resolver++)
+        cfg.transitive = transitive
+        def dep = project.dependencies.create(artifact)
+        cfg.dependencies.add(dep)
+        def files = cfg.resolve()
+        return getArtifacts(project, cfg)
+    }
+
+    static boolean checkExists(url) {
+        try {
+            def code = new URL(url).openConnection().with {
+                requestMethod = 'HEAD'
+                connect()
+                responseCode
+            }
+            return code == 200
+        } catch (Exception e) {
+            if (e.toString().contains('unable to find valid certification path to requested target'))
+                throw new RuntimeException('Failed to connect to ' + url + ': Missing certificate root authority, try updating java')
+            throw e
+        }
+    }
 
     static String getLatestForgeVersion(mcVersion) {
         final json = new JsonSlurper().parseText(new URL('https://files.minecraftforge.net/net/minecraftforge/forge/promotions_slim.json').getText('UTF-8'))

build_clean.gradle

@@ -1,11 +1,19 @@
 plugins {
     id 'java-library'
-	id 'eclipse'
-    id 'net.minecraftforge.gradle.patcher' version '[6.0.16,6.2)'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradle.patcher'
 }
 
 evaluationDependsOn(':mcp')
 
+repositories {
+    mavenCentral()
+    maven gradleutils.forgeMaven
+    maven gradleutils.minecraftLibsMaven
+}
+    
+java.toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+
 dependencies {
 	implementation(libs.forgespi)
 }
@@ -44,8 +52,14 @@ patcher {
 	}
 }
 
+tasks.withType(JavaCompile).configureEach {
+    options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
+    options.warnings = false // Shutup deprecated for removal warnings
+}
+
 eclipse.classpath.file.whenMerged {
 	// Disable optional warnings on the minecraft decompiled source code. It just muddies the warning window and hides warnings in our own codebase
 	def src = entries.find { it.path == 'src/main/java' }
-	src.entryAttributes['ignore_optional_problems'] = 'true'
-}
+    if (src == null) throw new IllegalStateException("You must run `setup` task before importing")
+    src.entryAttributes['ignore_optional_problems'] = 'true'
+}

build_forge_eclipse.gradle

@@ -0,0 +1,44 @@
+apply plugin: 'eclipse'
+
+eclipse {
+    classpath.file.whenMerged {
+        def minecraft = entries.find { it.path == 'src/main/java' }
+        if (minecraft == null) throw new IllegalStateException("You must run `setup` task before importing")
+        // Disable optional warnings on the minecraft decompiled source code. It just muddies the warning window and hides warnings in our own codebase
+        minecraft.entryAttributes['ignore_optional_problems'] = 'true'
+        
+        def mods = [
+            'src/main/java':      'minecraft',
+            'src/main/resources': 'minecraft',
+            'src/test/java':      'minecraft-test',
+            'src/test/resources': 'minecraft-test',
+            
+            'main-java':      'forge',
+            'main-resources': 'forge',
+            'generated':      'forge',
+            
+            'test-java':      'forge-test',
+            'test-resources': 'forge-test',
+            'test-generated': 'forge-test',
+        ]
+        
+        entries.forEach { e -> 
+            if ('src'.equals(e.kind) && e.hasProperty('output')) {
+                if (mods.containsKey(e.path))
+                    e.output = 'bin/' + mods[e.path]
+                //else
+                //    throw new IllegalStateException('Unknown path: ' + e.toString())
+            }
+        }
+    }
+    
+    // Filter out the run directory
+    project.resourceFilter {
+        appliesTo = 'FOLDERS'
+        type = 'EXCLUDE_ALL'
+        matcher {
+            id = 'org.eclipse.ui.ide.multiFilter'
+            arguments = '1.0-name-matches-false-true-run'
+        }
+    }
+}

build_shared.gradle

@@ -0,0 +1,76 @@
+import net.minecraftforge.forge.tasks.CleanProperties
+
+apply plugin: 'eclipse'
+apply plugin: 'idea'
+apply plugin: 'net.minecraftforge.gradleutils'
+
+group = 'net.minecraftforge'
+version = VERSION
+println("Version: $version")
+
+repositories {
+    mavenCentral()
+    maven gradleutils.forgeMaven
+    maven gradleutils.minecraftLibsMaven
+    //mavenLocal()
+}
+
+tasks.withType(Javadoc).configureEach {
+    options.tags = [
+        'apiNote:a:<em>API Note:</em>',
+        'implSpec:a:<em>Implementation Requirements:</em>',
+        'implNote:a:<em>Implementation Note:</em>'
+    ]
+    options.addStringOption('Xdoclint:all,-missing', '-public')
+}
+
+// We need to write the manifest to the binary file so we have properly versioned packaged at dev time.
+tasks.register('writeManifest') {
+    doLast {
+        if (plugins.findPlugin('net.minecraftforge.gradle.patcher')) // Forge project
+            universalJar.manifest.writeTo(rootProject.file('src/main/resources/META-INF/MANIFEST.MF'))
+        else
+            jar.manifest.writeTo(project.file('src/main/resources/META-INF/MANIFEST.MF'))
+    }
+}
+
+tasks.register('generateResources') {
+    dependsOn('writeManifest')
+}
+
+// Make sure out manifests get written before compiling the code, IDEA calls this task if you tell it to use the gradle build.
+tasks.withType(JavaCompile).configureEach {
+    dependsOn(generateResources)
+    dependsOn(processResources) // Needed because we merge the output of this with the output of the compile task. And gradle detects downstream tasks using the output without a hard dep
+    options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
+    options.warnings = false // Shutup deprecated for removal warnings
+}
+
+// Merge the resources and classes into the same directory. We'll need to split them at runtime because
+// Minecraft and Forge are in the same sourceSet as they are inter dependent.. for now..
+sourceSets.each {
+    def dir = layout.buildDirectory.dir("classes/java/$it.name")
+    it.output.resourcesDir = dir
+    it.java.destinationDirectory = dir
+}
+
+tasks.register('copyEclipseSettings') {
+    doLast {
+        rootProject.fileTree('ide/eclipse/template/.settings/').matching { include '**/*.prefs' }.each { file ->
+            def target = project.file('.settings/' + file.name)
+            def temp = new CleanProperties().load(file)
+            def exst = new CleanProperties().load(target)
+            exst.put('eclipse.preferences.version', '1')
+            temp.forEach(exst::put)
+            exst.store(target)
+        }
+    }
+}
+
+// TODO: [Gradle][IntelliJ] Auto trigger these tasks on import.
+eclipse {
+    // Run everytime eclipse builds the code
+    //autoBuildTasks writeManifest
+    // Run when importing the project
+    synchronizationTasks generateResources, copyEclipseSettings, eclipseClasspath, eclipseProject
+}

fmlcore/build.gradle

@@ -1,12 +1,13 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'com.github.ben-manes.versions'
-    id 'org.javamodularity.moduleplugin' version '1.8.3' apply false
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
-dependencyUpdates.rejectVersionIf { isNonStable(it.candidate.version) }
+apply from: rootProject.file('build_shared.gradle')
 
 dependencies {
     compileOnly(libs.nulls)
@@ -17,57 +18,50 @@ dependencies {
     implementation(libs.commons.io)
 }
 
-task sourcesJar(type: Jar) {
-    archiveClassifier = 'sources'
-    from sourceSets.main.allSource
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+    withSourcesJar()
 }
 
-ext {
-    MANIFESTS = [
-        '': [
-            'FMLModType': 'LIBRARY',
-            'Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ssZ"),
-            'Git-Commit': GIT_INFO.abbreviatedId,
-            'Git-Branch': GIT_INFO.branch,
-            'Build-Number': "${System.getenv('BUILD_NUMBER')?:0}"
-        ] as LinkedHashMap,
-        'net/minecraftforge/fml/loading/': [
-            'Specification-Title':      'FMLLoader',
+tasks.named('jar', Jar).configure {
+    manifest {
+        attributes([
+            'Automatic-Module-Name': 'net.minecraftforge.fmlcore',
+            'FMLModType': 'LIBRARY'
+        ] as LinkedHashMap)
+        attributes([
+            'Specification-Title':      'FML',
             'Specification-Vendor':     'Forge Development LLC',
             'Specification-Version':    '1',
-            'Implementation-Title':     'FML Loader',
+            'Implementation-Title':     'FML',
             'Implementation-Version':   '1.0',
-            'Implementation-Vendor':    'Forge'
-        ] as LinkedHashMap
-    ]
-}
-
-jar.doFirst {
-    manifest.attributes['Automatic-Module-Name'] = project.name
-    MANIFESTS.each { pkg, values ->
-        if (pkg == '')
-            manifest.attributes(values)
-        else
-            manifest.attributes(values, pkg)
+            'Implementation-Vendor':    'Forge Development LLC'
+        ] as LinkedHashMap, 'net/minecraftforge/fml/')
     }
 }
 
 tasks.withType(JavaCompile) {
-    options.compilerArgs << '-Xlint:unchecked'
+    options.compilerArgs << '-Xlint:-unchecked'
 }
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-
-    include 'net/minecraftforge/'
 }
 
-artifacts {
-    archives jar
-    archives sourcesJar
-}
-
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
-    artifact sourcesJar
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'fmlcore'
+        pom {
+            name = project.name
+            description = 'Modifactions to Minecraft to enable mod developers.'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }

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

@@ -5,11 +5,12 @@
 
 package net.minecraftforge.fml;
 
-import cpw.mods.modlauncher.util.ServiceLoaderUtils;
 import net.minecraftforge.eventbus.api.IEventBus;
 import net.minecraftforge.fml.config.IConfigEvent;
 import net.minecraftforge.fml.loading.FMLLoader;
 
+import java.util.ArrayList;
+import java.util.ServiceConfigurationError;
 import java.util.ServiceLoader;
 import java.util.function.Supplier;
 
@@ -19,10 +20,18 @@ public class Bindings {
     private final IBindingsProvider provider;
 
     private Bindings() {
-        final var providers = ServiceLoaderUtils.streamServiceLoader(()->ServiceLoader.load(FMLLoader.getGameLayer(), IBindingsProvider.class), sce->{}).toList();
-        if (providers.size() != 1) {
-            throw new IllegalStateException("Could not find bindings provider");
+        var providers = new ArrayList<IBindingsProvider>(1);
+        for (var itr = ServiceLoader.load(FMLLoader.getGameLayer(), IBindingsProvider.class).iterator(); itr.hasNext(); ) {
+            try {
+                providers.add(itr.next());
+            } catch (ServiceConfigurationError sce) {
+                sce.printStackTrace();
+            }
         }
+
+        if (providers.size() != 1)
+            throw new IllegalStateException("Could not find bindings provider: " + providers);
+
         this.provider = providers.get(0);
     }
 

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

@@ -7,7 +7,6 @@ package net.minecraftforge.fml;
 
 import com.google.gson.Gson;
 import net.minecraftforge.fml.loading.FMLConfig;
-import net.minecraftforge.fml.loading.FMLLoader;
 import net.minecraftforge.forgespi.language.IModInfo;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -35,81 +34,68 @@ import java.util.zip.GZIPInputStream;
 
 import static net.minecraftforge.fml.VersionChecker.Status.*;
 
-public class VersionChecker
-{
+public class VersionChecker {
     private static final Logger LOGGER = LogManager.getLogger();
     private static final int MAX_HTTP_REDIRECTS = Integer.getInteger("http.maxRedirects", 20);
     private static final int HTTP_TIMEOUT_SECS = Integer.getInteger("http.timeoutSecs", 15);
 
-    public enum Status
-    {
+    public enum Status {
         PENDING(),
         FAILED(),
         UP_TO_DATE(),
-        OUTDATED(3, true),
+        OUTDATED(3, true, true),
         AHEAD(),
         BETA(),
-        BETA_OUTDATED(6, true);
+        BETA_OUTDATED(6, true, true);
 
         final int sheetOffset;
         final boolean draw, animated;
 
-        Status()
-        {
+        Status() {
             this(0, false, false);
         }
 
-        Status(int sheetOffset)
-        {
-            this(sheetOffset, true, false);
-        }
-
-        Status(int sheetOffset, boolean animated)
-        {
-            this(sheetOffset, true, animated);
-        }
-
-        Status(int sheetOffset, boolean draw, boolean animated)
-        {
+        Status(int sheetOffset, boolean draw, boolean animated) {
             this.sheetOffset = sheetOffset;
             this.draw = draw;
             this.animated = animated;
         }
 
-        public int getSheetOffset()
-        {
+        public int getSheetOffset() {
             return sheetOffset;
         }
 
-        public boolean shouldDraw()
-        {
+        public boolean shouldDraw() {
             return draw;
         }
 
-        public boolean isAnimated()
-        {
+        public boolean isAnimated() {
             return animated;
         }
-
     }
 
     public record CheckResult(VersionChecker.Status status, ComparableVersion target, Map<ComparableVersion, String> changes, String url) {}
 
-    public static void startVersionCheck()
-    {
-        new Thread("Forge Version Check")
-        {
+    public static void startVersionCheck() {
+        new Thread("Forge Version Check") {
             private HttpClient client;
+            private String mcVersion;
+            private String agent;
 
             @Override
-            public void run()
-            {
-                if (!FMLConfig.getBoolConfigValue(FMLConfig.ConfigValue.VERSION_CHECK))
-                {
+            public void run() {
+                if (!FMLConfig.getBoolConfigValue(FMLConfig.ConfigValue.VERSION_CHECK)) {
                     LOGGER.info("Global Forge version check system disabled, no further processing.");
                     return;
                 }
 
+                var mc = ModList.get().getModContainerById("minecraft");
+                var forge = ModList.get().getModContainerById("forge");
+                this.mcVersion = mc.get().getModInfo().getVersion().toString();
+
+                this.agent = "Java-http-client/" + System.getProperty("java.version")
+                    + " MinecraftForge/" + mcVersion + '-' + forge.get().getModInfo().getVersion();
+
                 client = HttpClient.newBuilder().connectTimeout(Duration.ofSeconds(HTTP_TIMEOUT_SECS)).build();
                 gatherMods().forEach(this::process);
             }
@@ -119,15 +105,9 @@ public class VersionChecker
              */
             private String openUrlString(URL url, IModInfo mod) throws IOException, URISyntaxException, InterruptedException {
                 URL currentUrl = url;
+                var userAgent = this.agent + ' ' + mod.getModId() + '/' + mod.getVersion();
 
-                final StringBuilder sb = new StringBuilder();
-                sb.append("Java-http-client/").append(System.getProperty("java.version")).append(' ');
-                sb.append("MinecraftForge/").append(FMLLoader.versionInfo().mcAndForgeVersion()).append(' ');
-                sb.append(mod.getModId()).append('/').append(mod.getVersion());
-                final String userAgent = sb.toString();
-
-                for (int redirects = 0; redirects < MAX_HTTP_REDIRECTS; redirects++)
-                {
+                for (int redirects = 0; redirects < MAX_HTTP_REDIRECTS; redirects++) {
                     var request = HttpRequest.newBuilder()
                             .uri(currentUrl.toURI())
                             .timeout(Duration.ofSeconds(HTTP_TIMEOUT_SECS))
@@ -139,8 +119,7 @@ public class VersionChecker
                     final HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
 
                     int responseCode = response.statusCode();
-                    if (responseCode >= 300 && responseCode <= 399)
-                    {
+                    if (responseCode >= 300 && responseCode <= 399) {
                         String newLocation = response.headers().firstValue("Location")
                                 .orElseThrow(() -> new IOException("Got a 3xx response code but Location header was null while trying to fetch " + url));
                         currentUrl = new URL(currentUrl, newLocation);
@@ -150,26 +129,22 @@ public class VersionChecker
                     final boolean isGzipEncoded = response.headers().firstValue("Content-Encoding").orElse("").equals("gzip");
 
                     final String bodyStr;
-                    try (InputStream inStream = isGzipEncoded ? new GZIPInputStream(response.body()) : response.body())
-                    {
-                        try (var bufferedReader = new BufferedReader(new InputStreamReader(inStream)))
-                        {
-                            bodyStr = bufferedReader.lines().collect(Collectors.joining("\n"));
-                        }
+                    try (var inStream = isGzipEncoded ? new GZIPInputStream(response.body()) : response.body();
+                         var bufferedReader = new BufferedReader(new InputStreamReader(inStream))
+                    ) {
+                        bodyStr = bufferedReader.lines().collect(Collectors.joining("\n"));
                     }
                     return bodyStr;
                 }
                 throw new IOException("Too many redirects while trying to fetch " + url);
             }
 
-            private void process(IModInfo mod)
-            {
+            private void process(IModInfo mod) {
                 Status status = PENDING;
                 ComparableVersion target = null;
                 Map<ComparableVersion, String> changes = null;
                 String display_url = null;
-                try
-                {
+                try {
                     if (mod.getUpdateURL().isEmpty()) return;
                     URL url = mod.getUpdateURL().get();
                     LOGGER.info("[{}] Starting version check at {}", mod.getModId(), url.toString());
@@ -178,54 +153,40 @@ public class VersionChecker
 
                     LOGGER.debug("[{}] Received version check data:\n{}", mod.getModId(), data);
 
-
                     @SuppressWarnings("unchecked")
                     Map<String, Object> json = new Gson().fromJson(data, Map.class);
                     @SuppressWarnings("unchecked")
                     Map<String, String> promos = (Map<String, String>)json.get("promos");
                     display_url = (String)json.get("homepage");
 
-                    var mcVersion = FMLLoader.versionInfo().mcVersion();
                     String rec = promos.get(mcVersion + "-recommended");
                     String lat = promos.get(mcVersion + "-latest");
                     ComparableVersion current = new ComparableVersion(mod.getVersion().toString());
 
-                    if (rec != null)
-                    {
+                    if (rec != null) {
                         ComparableVersion recommended = new ComparableVersion(rec);
                         int diff = recommended.compareTo(current);
 
                         if (diff == 0)
                             status = UP_TO_DATE;
-                        else if (diff < 0)
-                        {
+                        else if (diff < 0) {
                             status = AHEAD;
-                            if (lat != null)
-                            {
+                            if (lat != null) {
                                 ComparableVersion latest = new ComparableVersion(lat);
-                                if (current.compareTo(latest) < 0)
-                                {
+                                if (current.compareTo(latest) < 0) {
                                     status = OUTDATED;
                                     target = latest;
                                 }
                             }
-                        }
-                        else
-                        {
+                        } else {
                             status = OUTDATED;
                             target = recommended;
                         }
-                    }
-                    else if (lat != null)
-                    {
+                    } else if (lat != null) {
                         ComparableVersion latest = new ComparableVersion(lat);
-                        if (current.compareTo(latest) < 0)
-                            status = BETA_OUTDATED;
-                        else
-                            status = BETA;
+                        status = current.compareTo(latest) < 0 ? BETA_OUTDATED : BETA;
                         target = latest;
-                    }
-                    else
+                    } else
                         status = BETA;
 
                     LOGGER.info("[{}] Found status: {} Current: {} Target: {}", mod.getModId(), status, current, target);
@@ -233,27 +194,20 @@ public class VersionChecker
                     changes = new LinkedHashMap<>();
                     @SuppressWarnings("unchecked")
                     Map<String, String> tmp = (Map<String, String>)json.get(mcVersion);
-                    if (tmp != null)
-                    {
+                    if (tmp != null) {
                         List<ComparableVersion> ordered = new ArrayList<>();
-                        for (String key : tmp.keySet())
-                        {
+                        for (String key : tmp.keySet()) {
                             ComparableVersion ver = new ComparableVersion(key);
                             if (ver.compareTo(current) > 0 && (target == null || ver.compareTo(target) < 1))
-                            {
                                 ordered.add(ver);
-                            }
                         }
                         Collections.sort(ordered);
 
-                        for (ComparableVersion ver : ordered)
-                        {
+                        for (ComparableVersion ver : ordered) {
                             changes.put(ver, tmp.get(ver.toString()));
                         }
                     }
-                }
-                catch (Exception e)
-                {
+                } catch (Exception e) {
                     LOGGER.warn("Failed to process update information", e);
                     status = FAILED;
                 }
@@ -263,8 +217,7 @@ public class VersionChecker
     }
 
     // Gather a list of mods that have opted in to this update system by providing a URL.
-    private static List<IModInfo> gatherMods()
-    {
+    private static List<IModInfo> gatherMods() {
         List<IModInfo> ret = new LinkedList<>();
         for (IModInfo info : ModList.get().getMods()) {
             if (info.getUpdateURL().isPresent())
@@ -276,9 +229,7 @@ public class VersionChecker
     private static Map<IModInfo, CheckResult> results = new ConcurrentHashMap<>();
     private static final CheckResult PENDING_CHECK = new CheckResult(PENDING, null, null, null);
 
-    public static CheckResult getResult(IModInfo mod)
-    {
+    public static CheckResult getResult(IModInfo mod) {
         return results.getOrDefault(mod, PENDING_CHECK);
     }
-
 }

fmlearlydisplay/build.gradle

@@ -1,10 +1,14 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'org.javamodularity.moduleplugin' version '1.8.7' apply false
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
+apply from: rootProject.file('build_shared.gradle')
+
 import org.gradle.internal.os.OperatingSystem
 switch (OperatingSystem.current()) {
 	case OperatingSystem.LINUX:
@@ -18,7 +22,10 @@ switch (OperatingSystem.current()) {
 		break
 }
 
-java.withSourcesJar()
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+    withSourcesJar()
+}
 
 dependencies {
     compileOnly(libs.nulls)
@@ -44,12 +51,16 @@ test {
 jar {
     manifest {
         attributes([
-            'Specification-Title':      'FMLEarlyDisplay',
+            'Automatic-Module-Name': 'net.minecraftforge.earlydisplay',
+            'Forge-Module-Layer':    'boot'
+        ] as LinkedHashMap)
+        attributes([
+            'Specification-Title':      'FML Early Display',
             'Specification-Vendor':     'Forge Development LLC',
             'Specification-Version':    '1',
             'Implementation-Title':     'FML Early Display',
-            'Implementation-Version':   '1.0',
-            'Implementation-Vendor':    'Forge'
+            'Implementation-Vendor':    'Forge Development LLC',
+            'Implementation-Version':   '1.0'
         ] as LinkedHashMap, 'net/minecraftforge/fml/earlydisplay/')
     }
 }
@@ -60,9 +71,22 @@ tasks.withType(JavaCompile) {
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-    include 'net/minecraftforge/'
 }
 
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'fmlearlydisplay'
+        pom {
+            name = project.name
+            description = 'A pretty looking, but prone to erroring screen displayed during Forge loading.'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }

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

@@ -114,11 +114,13 @@ public class DisplayWindow implements ImmediateWindowProvider {
     public String name() {
         return "fmlearlywindow";
     }
+
     @Override
     public Runnable initialize(String[] arguments) {
+        String mcVersion = FMLLoader.versionInfo().mcVersion();
+        String forgeVersion = FMLLoader.versionInfo().forgeVersion();
+
         final OptionParser parser = new OptionParser();
-        var mcversionopt = parser.accepts("fml.mcVersion").withRequiredArg().ofType(String.class);
-        var forgeversionopt = parser.accepts("fml.forgeVersion").withRequiredArg().ofType(String.class);
         var widthopt = parser.accepts("width")
                 .withRequiredArg().ofType(Integer.class)
                 .defaultsTo(FMLConfig.getIntConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_WIDTH));
@@ -133,7 +135,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
         FMLConfig.updateConfig(FMLConfig.ConfigValue.EARLY_WINDOW_WIDTH, winWidth);
         FMLConfig.updateConfig(FMLConfig.ConfigValue.EARLY_WINDOW_HEIGHT, winHeight);
         fbScale = FMLConfig.getIntConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_FBSCALE);
-        if (System.getenv("FML_EARLY_WINDOW_DARK")!= null) {
+        if (System.getenv("FML_EARLY_WINDOW_DARK") != null) {
             this.colourScheme = ColourScheme.BLACK;
         } else {
             try {
@@ -148,10 +150,9 @@ public class DisplayWindow implements ImmediateWindowProvider {
         }
         this.maximized = parsed.has(maximizedopt) || FMLConfig.getBoolConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_MAXIMIZED);
 
-        var forgeVersion = parsed.valueOf(forgeversionopt);
-        StartupNotificationManager.modLoaderConsumer().ifPresent(c->c.accept("Forge loading "+ forgeVersion));
+        StartupNotificationManager.modLoaderConsumer().ifPresent(c->c.accept("Forge loading " + forgeVersion));
         performanceInfo = new PerformanceInfo();
-        return start(parsed.valueOf(mcversionopt), forgeVersion);
+        return start(mcVersion, forgeVersion);
     }
 
     private static final long MINFRAMETIME = TimeUnit.MILLISECONDS.toNanos(10); // This is the FPS cap on the window - note animation is capped at 20FPS via the tickTimer
@@ -229,11 +230,11 @@ public class DisplayWindow implements ImmediateWindowProvider {
             crashElegantly("An error occurred initializing a font for rendering. "+t.getMessage());
         }
         this.elements = new ArrayList<>(Arrays.asList(
-                RenderElement.anvil(font),
-                RenderElement.logMessageOverlay(font),
-                RenderElement.forgeVersionOverlay(font, mcVersion+"-"+forgeVersion.split("-")[0]),
-                RenderElement.performanceBar(font),
-                RenderElement.progressBars(font)
+            RenderElement.anvil(font),
+            RenderElement.logMessageOverlay(font),
+            RenderElement.forgeVersionOverlay(font, mcVersion + "-" + forgeVersion),
+            RenderElement.performanceBar(font),
+            RenderElement.progressBars(font)
         ));
 
         var date = Calendar.getInstance();
@@ -285,6 +286,7 @@ public class DisplayWindow implements ImmediateWindowProvider {
     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;
         });

fmlloader/build.gradle

@@ -1,12 +1,14 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'com.github.ben-manes.versions'
-    id 'org.javamodularity.moduleplugin' version '1.8.3' apply false
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
-dependencyUpdates.rejectVersionIf { isNonStable(it.candidate.version) }
+apply from: rootProject.file('build_shared.gradle')
+
 configurations.forEach{ it.transitive = false }
 
 dependencies {
@@ -41,28 +43,25 @@ dependencies {
     testRuntimeOnly(libs.bootstrap)
 }
 
-task sourcesJar(type: Jar) {
-    archiveClassifier = 'sources'
-    from sourceSets.main.allSource
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+    withSourcesJar()
 }
 
-ext {
-    MANIFESTS = [
-        'net/minecraftforge/fml/loading/': [
-            'Specification-Title':      'FMLLoader',
-            'Specification-Vendor':     'Forge Development LLC',
-            'Specification-Version':    '1',
-            'Implementation-Title':     'FML Loader',
-            'Implementation-Version':   '1.0',
-            'Implementation-Vendor':    'Forge'
-        ] as LinkedHashMap
-    ]
-}
-
-jar.doFirst {
-    manifest.attributes['Automatic-Module-Name'] = project.name
-    MANIFESTS.each { pkg, values ->
-        manifest.attributes(values, pkg)
+tasks.named('jar', Jar).configure {
+    manifest {
+        attributes([
+            'Automatic-Module-Name': 'net.minecraftforge.fmlloader',
+            'Forge-Module-Layer':    'boot'
+        ] as LinkedHashMap)
+        attributes([
+            'Specification-Title':   'FMLLoader',
+            'Specification-Vendor':  'Forge Development LLC',
+            'Specification-Version': '1',
+            'Implementation-Title':  'FMLLoader',
+            'Implementation-Vendor': 'Forge Development LLC',
+            'Implementation-Version': FORGE_VERSION
+        ] as LinkedHashMap, 'net/minecraftforge/fml/loading/')
     }
 }
 
@@ -72,16 +71,36 @@ tasks.withType(JavaCompile) {
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-
-    include 'net/minecraftforge/'
 }
 
-artifacts {
-    archives jar
-    archives sourcesJar
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'fmlloader'
+        pom {
+            name = project.name
+            description = 'Modifactions to Minecraft to enable mod developers.'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }
 
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
-    artifact sourcesJar
-}
+tasks.register('writeForgeVersionJson') {
+    doLast {
+        file('src/main/resources/forge_version.json').json = [
+            'forge': FORGE_VERSION,
+            'mc': MC_VERSION,
+            'mcp': MCP_VERSION
+        ] as LinkedHashMap
+    }
+}
+
+tasks.named('generateResources').configure {
+    dependsOn('writeForgeVersionJson')
+}

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

@@ -1,61 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading;
-
-import cpw.mods.modlauncher.api.NamedPath;
-import cpw.mods.modlauncher.serviceapi.ITransformerDiscoveryService;
-import org.apache.logging.log4j.LogManager;
-
-import java.io.File;
-import java.io.IOException;
-import java.net.URL;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.*;
-
-public class ClasspathTransformerDiscoverer implements ITransformerDiscoveryService {
-
-    private final List<Path> legacyClasspath = Arrays.stream(System.getProperty("legacyClassPath", "").split(File.pathSeparator)).map(Path::of).toList();
-
-    @Override
-    public List<NamedPath> candidates(Path gameDirectory) {
-        return Collections.emptyList();
-    }
-
-    @Override
-    public List<NamedPath> candidates(final Path gameDirectory, final String launchTarget) {
-        if (launchTarget != null && launchTarget.contains("dev")) {
-            this.scan(gameDirectory);
-        }
-        return List.copyOf(found);
-    }
-
-    private final static List<NamedPath> found = new ArrayList<>();
-
-    public static List<Path> allExcluded() {
-        return found.stream().map(np->np.paths()[0]).toList();
-    }
-    
-    private void scan(final Path gameDirectory) {
-        try {
-            locateTransformers("META-INF/services/cpw.mods.modlauncher.api.ITransformationService");
-            locateTransformers("META-INF/services/net.minecraftforge.forgespi.locating.IModLocator");
-        } catch (IOException e) {
-            LogManager.getLogger().error("Error during discovery of transform services from the classpath", e);
-        }
-    }
-
-    private void locateTransformers(String resource) throws IOException {
-        final Enumeration<URL> resources = ClassLoader.getSystemClassLoader().getResources(resource);
-        while (resources.hasMoreElements()) {
-            URL url = resources.nextElement();
-            Path path = ClasspathLocatorUtils.findJarPathFor(resource, url.toString(), url);
-            if (legacyClasspath.stream().anyMatch(path::equals) || !Files.exists(path) || Files.isDirectory(path))
-                continue;
-            found.add(new NamedPath(path.toUri().toString(), path));
-        }
-    }
-}

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

@@ -8,8 +8,6 @@ package net.minecraftforge.fml.loading;
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.Launcher;
 import cpw.mods.modlauncher.api.*;
-import cpw.mods.modlauncher.serviceapi.ILaunchPluginService;
-import cpw.mods.modlauncher.util.ServiceLoaderUtils;
 import net.minecraftforge.fml.loading.moddiscovery.BackgroundScanHandler;
 import net.minecraftforge.fml.loading.moddiscovery.ModDiscoverer;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
@@ -24,27 +22,29 @@ import org.slf4j.Logger;
 
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.ServiceConfigurationError;
+import java.util.ServiceLoader;
+import java.util.Set;
 import java.util.function.BiFunction;
-import java.util.stream.Collectors;
-
 import static net.minecraftforge.fml.loading.LogMarkers.CORE;
 import static net.minecraftforge.fml.loading.LogMarkers.SCAN;
 
-public class FMLLoader
-{
+public class FMLLoader {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static AccessTransformerService accessTransformer;
     private static ModDiscoverer modDiscoverer;
     private static ICoreModProvider coreModProvider;
-    private static ILaunchPluginService eventBus;
     private static LanguageLoadingProvider languageLoadingProvider;
     private static Dist dist;
     private static String naming;
     private static LoadingModList loadingModList;
     private static RuntimeDistCleaner runtimeDistCleaner;
     private static Path gamePath;
-    private static VersionInfo versionInfo;
+    private static VersionInfo versionInfo = VersionInfo.detect();
     private static String launchHandlerName;
     private static CommonLaunchHandler commonLaunchHandler;
     public static Runnable progressWindowTick;
@@ -53,80 +53,74 @@ public class FMLLoader
     private static boolean production;
     private static IModuleLayerManager moduleLayerManager;
 
-    static void onInitialLoad(IEnvironment environment, Set<String> otherServices) throws IncompatibleEnvironmentException
-    {
-        final String version = LauncherVersion.getVersion();
-        LOGGER.debug(CORE,"FML {} loading", version);
-        final Package modLauncherPackage = ITransformationService.class.getPackage();
-        LOGGER.debug(CORE,"FML found ModLauncher version : {}", modLauncherPackage.getImplementationVersion());
-        if (!modLauncherPackage.isCompatibleWith("4.0")) {
-            LOGGER.error(CORE, "Found incompatible ModLauncher specification : {}, version {} from {}", modLauncherPackage.getSpecificationVersion(), modLauncherPackage.getImplementationVersion(), modLauncherPackage.getImplementationVendor());
-            throw new IncompatibleEnvironmentException("Incompatible modlauncher found "+modLauncherPackage.getSpecificationVersion());
-        }
+    static void onInitialLoad(IEnvironment env, Set<String> otherServices) throws IncompatibleEnvironmentException {
+        LOGGER.debug(CORE, "Detected version data : {}", versionInfo);
+        LOGGER.debug(CORE, "FML {} loading", LauncherVersion.getVersion());
 
-        accessTransformer = (AccessTransformerService) environment.findLaunchPlugin("accesstransformer").orElseThrow(()-> {
-            LOGGER.error(CORE, "Access Transformer library is missing, we need this to run");
-            return new IncompatibleEnvironmentException("Missing AccessTransformer, cannot run");
-        });
-
-        final Package atPackage = accessTransformer.getClass().getPackage();
-        LOGGER.debug(CORE,"FML found AccessTransformer version : {}", atPackage.getImplementationVersion());
-        if (!atPackage.isCompatibleWith("1.0")) {
-            LOGGER.error(CORE, "Found incompatible AccessTransformer specification : {}, version {} from {}", atPackage.getSpecificationVersion(), atPackage.getImplementationVersion(), atPackage.getImplementationVendor());
-            throw new IncompatibleEnvironmentException("Incompatible accesstransformer found "+atPackage.getSpecificationVersion());
-        }
-
-        eventBus = environment.findLaunchPlugin("eventbus").orElseThrow(()-> {
-            LOGGER.error(CORE, "Event Bus library is missing, we need this to run");
-            return new IncompatibleEnvironmentException("Missing EventBus, cannot run");
-        });
-
-        final Package eventBusPackage = eventBus.getClass().getPackage();
-        LOGGER.debug(CORE,"FML found EventBus version : {}", eventBusPackage.getImplementationVersion());
-        if (!eventBusPackage.isCompatibleWith("1.0")) {
-            LOGGER.error(CORE, "Found incompatible EventBus specification : {}, version {} from {}", eventBusPackage.getSpecificationVersion(), eventBusPackage.getImplementationVersion(), eventBusPackage.getImplementationVendor());
-            throw new IncompatibleEnvironmentException("Incompatible eventbus found "+eventBusPackage.getSpecificationVersion());
-        }
-
-        runtimeDistCleaner = (RuntimeDistCleaner)environment.findLaunchPlugin("runtimedistcleaner").orElseThrow(()-> {
-            LOGGER.error(CORE, "Dist Cleaner is missing, we need this to run");
-            return new IncompatibleEnvironmentException("Missing DistCleaner, cannot run!");
-        });
-        LOGGER.debug(CORE, "Found Runtime Dist Cleaner");
-
-        var coreModProviders = ServiceLoaderUtils.streamWithErrorHandling(ServiceLoader.load(FMLLoader.class.getModule().getLayer(), ICoreModProvider.class), sce -> LOGGER.error(CORE, "Failed to load a coremod library, expect problems", sce)).toList();
-
-        if (coreModProviders.isEmpty()) {
-            LOGGER.error(CORE, "Found no coremod provider. Cannot run");
-            throw new IncompatibleEnvironmentException("No coremod library found");
-        } else if (coreModProviders.size() > 1) {
-            LOGGER.error(CORE, "Found multiple coremod providers : {}. Cannot run", coreModProviders.stream().map(p -> p.getClass().getName()).collect(Collectors.toList()));
-            throw new IncompatibleEnvironmentException("Multiple coremod libraries found");
-        }
-
-        coreModProvider = coreModProviders.get(0);
-        final Package coremodPackage = coreModProvider.getClass().getPackage();
-        LOGGER.debug(CORE,"FML found CoreMod version : {}", coremodPackage.getImplementationVersion());
-
-
-        LOGGER.debug(CORE, "Found ForgeSPI package implementation version {}", Environment.class.getPackage().getImplementationVersion());
-        LOGGER.debug(CORE, "Found ForgeSPI package specification {}", Environment.class.getPackage().getSpecificationVersion());
-        if (Integer.parseInt(Environment.class.getPackage().getSpecificationVersion()) < 2) {
-            LOGGER.error(CORE, "Found an out of date ForgeSPI implementation: {}, loading cannot continue", Environment.class.getPackage().getSpecificationVersion());
-            throw new IncompatibleEnvironmentException("ForgeSPI is out of date, we cannot continue");
-        }
+        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"));
+        checkPackage(Environment.class, "2.0", "ForgeSPI");
 
         try {
-            Class.forName("com.electronwill.nightconfig.core.Config", false, environment.getClass().getClassLoader());
-            Class.forName("com.electronwill.nightconfig.toml.TomlFormat", false, environment.getClass().getClassLoader());
+            Class.forName("com.electronwill.nightconfig.core.Config", false, env.getClass().getClassLoader());
+            Class.forName("com.electronwill.nightconfig.toml.TomlFormat", false, env.getClass().getClassLoader());
         } catch (ClassNotFoundException e) {
             LOGGER.error(CORE, "Failed to load NightConfig");
             throw new IncompatibleEnvironmentException("Missing NightConfig");
         }
     }
 
-    static void setupLaunchHandler(final IEnvironment environment, final Map<String, Object> arguments)
-    {
+    private static <T> T getPlugin(IEnvironment env, String id, String version, String name) throws IncompatibleEnvironmentException {
+        @SuppressWarnings("unchecked")
+        var plugin = (T)env.findLaunchPlugin(id).orElseThrow(() -> {
+            LOGGER.error(CORE, "{} library is missing, we need this to run", name);
+            return new IncompatibleEnvironmentException("Missing " + name + ", cannot run");
+        });
+        checkPackage(plugin.getClass(), version, name);
+        return plugin;
+    }
+
+    private static void checkPackage(Class<?> cls, String version, String name) throws IncompatibleEnvironmentException {
+        var pkg = cls.getPackage();
+        var info = JarVersionLookupHandler.getInfo(pkg);
+        LOGGER.debug(CORE, "Found {} version: {}", name, info.impl().version().orElse("MISSING"));
+
+        if (!pkg.isCompatibleWith(version)) {
+            LOGGER.error(CORE, "Found incompatible {} specification: {}, version {} from {}", name,
+                 info.spec().version().orElse("MISSING"),
+                 info.impl().version().orElse("MISSING"),
+                 info.impl().vendor().orElse("MISSING")
+             );
+            throw new IncompatibleEnvironmentException("Incompatible " + name + " found " + info.spec().version().orElse("MISSING"));
+        }
+    }
+
+    private static <T> T getSingleService(Class<T> clazz, String name) throws IncompatibleEnvironmentException {
+          var providers = new ArrayList<T>();
+          for (var itr = ServiceLoader.load(FMLLoader.class.getModule().getLayer(), clazz).iterator(); itr.hasNext(); ) {
+              try {
+                  providers.add(itr.next());
+              } catch (ServiceConfigurationError e) {
+                  LOGGER.error(CORE, "Failed to load a " + name + " library, expect problems", e);
+              }
+          }
+
+          if (providers.isEmpty()) {
+              LOGGER.error(CORE, "Found no {} provider. Cannot run", name);
+              throw new IncompatibleEnvironmentException("No " + name + " library found");
+          } else if (providers.size() > 1) {
+              LOGGER.error(CORE, "Found multiple {} providers: {}. Cannot run", name, providers.stream().map(p -> p.getClass().getName()).toList());
+              throw new IncompatibleEnvironmentException("Multiple " + name + " libraries found");
+          }
+
+          return providers.get(0);
+    }
+
+    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);
         final Optional<ILaunchHandlerService> launchHandler = environment.findLaunchHandler(launchTarget);
@@ -136,7 +130,7 @@ public class FMLLoader
             throw new RuntimeException("Missing launch handler: " + launchTarget);
         }
 
-        // TODO: What the fuck is the point of using a service if you require a specific concrete class
+        // TODO: [FML][Loader] What the fuck is the point of using a service if you require a specific concrete class
         if (!(launchHandler.get() instanceof CommonLaunchHandler)) {
             LOGGER.error(CORE, "Incompatible Launch handler found - type {}, cannot continue", launchHandler.get().getClass().getName());
             throw new RuntimeException("Incompatible launch handler found");
@@ -149,16 +143,12 @@ public class FMLLoader
         dist = commonLaunchHandler.getDist();
         production = commonLaunchHandler.isProduction();
 
-        versionInfo = new VersionInfo(arguments);
-
         accessTransformer.getExtension().accept(Pair.of(naming, "srg"));
 
-        LOGGER.debug(CORE,"Received command line version data  : {}", versionInfo);
-
         runtimeDistCleaner.getExtension().accept(dist);
     }
-    public static List<ITransformationService.Resource> beginModScan(final Map<String,?> arguments)
-    {
+
+    public static List<ITransformationService.Resource> beginModScan(final Map<String,?> arguments) {
         LOGGER.debug(SCAN,"Scanning for Mod Locators");
         modDiscoverer = new ModDiscoverer(arguments);
         modValidator = modDiscoverer.discoverMods();
@@ -178,8 +168,7 @@ public class FMLLoader
         return coreModProvider;
     }
 
-    public static LanguageLoadingProvider getLanguageLoadingProvider()
-    {
+    public static LanguageLoadingProvider getLanguageLoadingProvider() {
         return languageLoadingProvider;
     }
 
@@ -191,31 +180,26 @@ public class FMLLoader
         return commonLaunchHandler;
     }
 
-    public static void addAccessTransformer(Path atPath, ModFile modName)
-    {
+    public static void addAccessTransformer(Path atPath, ModFile modName) {
         LOGGER.debug(SCAN, "Adding Access Transformer in {}", modName.getFilePath());
         accessTransformer.offerResource(atPath, modName.getFileName());
     }
 
-    public static Dist getDist()
-    {
+    public static Dist getDist() {
         return dist;
     }
 
-    public static void beforeStart(ModuleLayer gameLayer)
-    {
+    public static void beforeStart(ModuleLayer gameLayer) {
         ImmediateWindowHandler.acceptGameLayer(gameLayer);
         ImmediateWindowHandler.updateProgress("Launching minecraft");
         progressWindowTick.run();
     }
 
-    public static LoadingModList getLoadingModList()
-    {
+    public static LoadingModList getLoadingModList() {
         return loadingModList;
     }
 
-    public static Path getGamePath()
-    {
+    public static Path getGamePath() {
         return gamePath;
     }
 
@@ -232,7 +216,7 @@ public class FMLLoader
     }
 
     public static List<Map<String, String>> modLauncherModList() {
-        return Launcher.INSTANCE.environment().getProperty(IEnvironment.Keys.MODLIST.get()).orElseGet(Collections::emptyList);
+        return Launcher.INSTANCE.environment().getProperty(IEnvironment.Keys.MODLIST.get()).orElse(List.of());
     }
 
     public static String launcherHandlerName() {

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

@@ -7,7 +7,6 @@ package net.minecraftforge.fml.loading;
 
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.api.*;
-import joptsimple.ArgumentAcceptingOptionSpec;
 import joptsimple.OptionSpecBuilder;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import net.minecraftforge.forgespi.Environment;
@@ -15,7 +14,6 @@ import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
@@ -24,36 +22,18 @@ import java.util.Set;
 import java.util.function.BiFunction;
 import static net.minecraftforge.fml.loading.LogMarkers.CORE;
 
-public class FMLServiceProvider implements ITransformationService
-{
+public class FMLServiceProvider implements ITransformationService {
     private static final Logger LOGGER = LogUtils.getLogger();
-    private ArgumentAcceptingOptionSpec<String> modsOption;
-    private ArgumentAcceptingOptionSpec<String> modListsOption;
-    private ArgumentAcceptingOptionSpec<String> mavenRootsOption;
-    private ArgumentAcceptingOptionSpec<String> forgeOption;
-    private ArgumentAcceptingOptionSpec<String> mcOption;
-    private ArgumentAcceptingOptionSpec<String> forgeGroupOption;
-    private ArgumentAcceptingOptionSpec<String> mcpOption;
-    private ArgumentAcceptingOptionSpec<String> mappingsOption;
-    private List<String> modsArgumentList;
-    private List<String> modListsArgumentList;
-    private List<String> mavenRootsArgumentList;
-    private String targetForgeVersion;
-    private String targetMcVersion;
-    private String targetMcpVersion;
-    private String targetMcpMappings;
-    private String targetForgeGroup;
     private Map<String, Object> arguments;
 
-    public FMLServiceProvider()
-    {
-        final String markerselection = System.getProperty("forge.logging.markers", "");
-        Arrays.stream(markerselection.split(",")).forEach(marker -> System.setProperty("forge.logging.marker." + marker.toLowerCase(Locale.ROOT), "ACCEPT"));
+    public FMLServiceProvider() {
+        var markers = System.getProperty("forge.logging.markers", "").split(",");
+        for (var marker : markers)
+            System.setProperty("forge.logging.marker." + marker.toLowerCase(Locale.ROOT), "ACCEPT");
     }
 
     @Override
-    public String name()
-    {
+    public String name() {
         return "fml";
     }
 
@@ -66,14 +46,6 @@ public class FMLServiceProvider implements ITransformationService
         LOGGER.debug(CORE, "Preparing ModFile");
         environment.computePropertyIfAbsent(Environment.Keys.MODFILEFACTORY.get(), k->ModFile::new);
         arguments = new HashMap<>();
-        arguments.put("modLists", modListsArgumentList);
-        arguments.put("mods", modsArgumentList);
-        arguments.put("mavenRoots", mavenRootsArgumentList);
-        arguments.put("forgeVersion", targetForgeVersion);
-        arguments.put("forgeGroup", targetForgeGroup);
-        arguments.put("mcVersion", targetMcVersion);
-        arguments.put("mcpVersion", targetMcpVersion);
-        arguments.put("mcpMappings", targetMcpMappings);
         LOGGER.debug(CORE, "Preparing launch handler");
         FMLLoader.setupLaunchHandler(environment, arguments);
         FMLEnvironment.setupInteropEnvironment(environment);
@@ -92,46 +64,22 @@ public class FMLServiceProvider implements ITransformationService
     }
 
     @Override
-    public void onLoad(IEnvironment environment, Set<String> otherServices) throws IncompatibleEnvironmentException
-    {
-//        LOGGER.debug("Injecting tracing printstreams for STDOUT/STDERR.");
-//        System.setOut(new TracingPrintStream(LogManager.getLogger("STDOUT"), System.out));
-//        System.setErr(new TracingPrintStream(LogManager.getLogger("STDERR"), System.err));
+    public void onLoad(IEnvironment environment, Set<String> otherServices) throws IncompatibleEnvironmentException {
         FMLLoader.onInitialLoad(environment, otherServices);
     }
 
     @Override
-    public void arguments(BiFunction<String, String, OptionSpecBuilder> argumentBuilder)
-    {
-        forgeOption = argumentBuilder.apply("forgeVersion", "Forge Version number").withRequiredArg().ofType(String.class).required();
-        forgeGroupOption = argumentBuilder.apply("forgeGroup", "Forge Group (for testing)").withRequiredArg().ofType(String.class).defaultsTo("net.minecraftforge");
-        mcOption = argumentBuilder.apply("mcVersion", "Minecraft Version number").withRequiredArg().ofType(String.class).required();
-        mcpOption = argumentBuilder.apply("mcpVersion", "MCP Version number").withRequiredArg().ofType(String.class).required();
-        mappingsOption = argumentBuilder.apply("mcpMappings", "MCP Mappings Channel and Version").withRequiredArg().ofType(String.class);
-        modsOption = argumentBuilder.apply("mods", "List of mods to add").withRequiredArg().ofType(String.class).withValuesSeparatedBy(",");
-        modListsOption = argumentBuilder.apply("modLists", "JSON modlists").withRequiredArg().ofType(String.class).withValuesSeparatedBy(",");
-        mavenRootsOption = argumentBuilder.apply("mavenRoots", "Maven root directories").withRequiredArg().ofType(String.class).withValuesSeparatedBy(",");
+    public void arguments(BiFunction<String, String, OptionSpecBuilder> argumentBuilder) {
     }
 
     @Override
-    public void argumentValues(OptionResult option)
-    {
-        modsArgumentList = option.values(modsOption);
-        modListsArgumentList = option.values(modListsOption);
-        mavenRootsArgumentList = option.values(mavenRootsOption);
-        targetForgeVersion = option.value(forgeOption);
-        targetForgeGroup = option.value(forgeGroupOption);
-        targetMcVersion = option.value(mcOption);
-        targetMcpVersion = option.value(mcpOption);
-        targetMcpMappings = option.value(mappingsOption);
+    public void argumentValues(OptionResult option) {
     }
 
     @SuppressWarnings("rawtypes")
     @Override
-    public @NotNull List<ITransformer> transformers()
-    {
+    public @NotNull List<ITransformer> transformers() {
         LOGGER.debug(CORE, "Loading coremod transformers");
         return new ArrayList<>(FMLLoader.getCoreModProvider().getCoreModTransformers());
     }
-
 }

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

@@ -32,15 +32,16 @@ public class ImmediateWindowHandler {
         } else {
             final var providername = FMLConfig.getConfigValue(FMLConfig.ConfigValue.EARLY_WINDOW_PROVIDER);
             LOGGER.info("Loading ImmediateWindowProvider {}", providername);
-            final var maybeProvider = ServiceLoader.load(ImmediateWindowProvider.class)
-                    .stream()
-                    .map(ServiceLoader.Provider::get)
-                    .filter(p -> Objects.equals(p.name(), providername))
-                    .findFirst();
-            provider = maybeProvider.or(() -> {
+            for (var service : ServiceLoader.load(ImmediateWindowProvider.class)) {
+                if (providername.equals(service.name())) {
+                    provider = service;
+                    break;
+                }
+            }
+            if (provider == null) {
                 LOGGER.info("Failed to find ImmediateWindowProvider {}, disabling", providername);
-                return Optional.of(new DummyProvider());
-            }).orElseThrow();
+                provider = new DummyProvider();
+            }
         }
         // Only update config if the provider isn't the dummy provider
         if (!Objects.equals(provider.name(), "dummyprovider"))

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

@@ -11,32 +11,72 @@ import java.util.Optional;
  * Finds Version data from a package, with possible default values
  */
 public class JarVersionLookupHandler {
+    public record Version(Optional<String> title, Optional<String> vendor, Optional<String> version) {
+        @Override
+        public String toString() {
+            return "[" +
+                "title=" + title.orElse(null) +
+                ", vendor=" + vendor.orElse(null) +
+                ", version=" + version.orElse(null) +
+            "]";
+        }
+    }
+    public record Info(Version spec, Version impl) {}
 
+    @SuppressWarnings("deprecation")
+    public static Info getInfo(String pkgName) {
+        return getInfo(Package.getPackage(pkgName));
+    }
+
+    public static Info getInfo(Class<?> clazz) {
+        return getInfo(clazz.getPackage());
+    }
+
+    public static Info getInfo(Package pkg) {
+        return new Info(
+            new Version(
+                Optional.ofNullable(pkg.getSpecificationTitle()),
+                Optional.ofNullable(pkg.getSpecificationVendor()),
+                Optional.ofNullable(pkg.getSpecificationVersion())
+            ),
+            new Version(
+                Optional.ofNullable(pkg.getImplementationTitle()),
+                Optional.ofNullable(pkg.getImplementationVendor()),
+                Optional.ofNullable(pkg.getImplementationVersion())
+            )
+        );
+    }
+
+
+    @Deprecated(forRemoval = true, since = "1.20.2")
     public static Optional<String> getImplementationVersion(final String pkgName) {
         // Note that with Java 9, you'll probably want the module's version data, hence pulling this out
         final String pkgVersion = Package.getPackage(pkgName).getImplementationVersion();
         return Optional.ofNullable(pkgVersion);
     }
 
+    @Deprecated(forRemoval = true, since = "1.20.2")
     public static Optional<String> getSpecificationVersion(final String pkgName) {
         // Note that with Java 9, you'll probably want the module's version data, hence pulling this out
         final String pkgVersion = Package.getPackage(pkgName).getSpecificationVersion();
         return Optional.ofNullable(pkgVersion);
     }
 
+    @Deprecated(forRemoval = true, since = "1.20.2")
     public static Optional<String> getImplementationVersion(final Class<?> clazz) {
         // With java 9 we'll use the module's version if it exists in preference.
         final String pkgVersion = clazz.getPackage().getImplementationVersion();
         return Optional.ofNullable(pkgVersion);
     }
 
+    @Deprecated(forRemoval = true, since = "1.20.2")
     public static Optional<String> getImplementationTitle(final Class<?> clazz) {
         // With java 9 we'll use the module's version if it exists in preference.
         final String pkgVersion = clazz.getPackage().getImplementationTitle();
         return Optional.ofNullable(pkgVersion);
     }
 
-
+    @Deprecated(forRemoval = true, since = "1.20.2")
     public static Optional<String> getSpecificationVersion(final Class<?> clazz) {
         // With java 9 we'll use the module's version if it exists in preference.
         final String pkgVersion = clazz.getPackage().getSpecificationVersion();

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

@@ -7,26 +7,19 @@ package net.minecraftforge.fml.loading;
 
 import com.mojang.logging.LogUtils;
 import cpw.mods.modlauncher.Launcher;
-import cpw.mods.modlauncher.api.IModuleLayerManager;
-import cpw.mods.modlauncher.util.ServiceLoaderUtils;
+import cpw.mods.modlauncher.api.IModuleLayerManager.Layer;
 import net.minecraftforge.forgespi.language.IModLanguageProvider;
-import net.minecraftforge.fml.loading.moddiscovery.ExplodedDirectoryLocator;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
 import org.apache.maven.artifact.versioning.ArtifactVersion;
 import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
 import org.apache.maven.artifact.versioning.VersionRange;
 import org.slf4j.Logger;
 
-import java.net.URISyntaxException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
+import java.util.ServiceConfigurationError;
 import java.util.ServiceLoader;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -35,115 +28,97 @@ import java.util.stream.Stream;
 import static net.minecraftforge.fml.loading.LogMarkers.CORE;
 import static net.minecraftforge.fml.loading.LogMarkers.LOADING;
 
-public class LanguageLoadingProvider
-{
+public class LanguageLoadingProvider {
+    public void forEach(Consumer<IModLanguageProvider> consumer) {
+        providers.forEach(consumer);
+    }
+
+    public <T> Stream<T> applyForEach(Function<IModLanguageProvider, T> function) {
+        return providers.stream().map(function);
+    }
+
+    public void reload() {
+        loadLanguageProviders();
+    }
+
+    /** This doesn't actually do anything with the argument, so just call reload(). Not sure when cpw broke that. */
+    @Deprecated(forRemoval = true, since = "1.20.2")
+    public void addAdditionalLanguages(List<ModFile> modFiles) {
+        reload();
+    }
+
+    /*==========================================================================*
+     *                        INTERNAL SHIT                                     *
+     *==========================================================================*/
     private static final Logger LOGGER = LogUtils.getLogger();
-    private final List<IModLanguageProvider> languageProviders = new ArrayList<>();
     private final ServiceLoader<IModLanguageProvider> serviceLoader;
-    private final Map<String, ModLanguageWrapper> languageProviderMap = new HashMap<>();
-    private List<Path> languagePaths = new ArrayList<>();
+    private final List<IModLanguageProvider> providers = new ArrayList<>();
+    private final Map<String, Wrapper> providersByName = new HashMap<>();
+    private static final DefaultArtifactVersion IN_DEV = new DefaultArtifactVersion("0.0-dev");
 
-    public void forEach(final Consumer<IModLanguageProvider> consumer)
-    {
-        languageProviders.forEach(consumer);
-    }
-
-    public <T> Stream<T> applyForEach(final Function<IModLanguageProvider, T> function) {
-        return languageProviders.stream().map(function);
-    }
-
-    private static class ModLanguageWrapper {
-        private final IModLanguageProvider modLanguageProvider;
-
-        private final ArtifactVersion version;
-        public ModLanguageWrapper(IModLanguageProvider modLanguageProvider, ArtifactVersion version)
-        {
-            this.modLanguageProvider = modLanguageProvider;
-            this.version = version;
-        }
-        public ArtifactVersion getVersion()
-        {
-            return version;
-        }
-
-        public IModLanguageProvider getModLanguageProvider()
-        {
-            return modLanguageProvider;
-        }
-
-
-    }
+    private record Wrapper(ArtifactVersion version, IModLanguageProvider service) {}
 
     LanguageLoadingProvider() {
-        var sl = Launcher.INSTANCE.environment().findModuleLayerManager().flatMap(lm->lm.getLayer(IModuleLayerManager.Layer.PLUGIN)).orElseThrow();
+        var sl = Launcher.INSTANCE.environment().findModuleLayerManager().flatMap(lm -> lm.getLayer(Layer.PLUGIN)).orElseThrow();
         serviceLoader = ServiceLoader.load(sl, IModLanguageProvider.class);
         loadLanguageProviders();
     }
+
     private void loadLanguageProviders() {
-        LOGGER.debug(CORE, "Found {} language providers", ServiceLoaderUtils.streamServiceLoader(()->serviceLoader, sce->LOGGER.error("Problem with language loaders")).count());
-        serviceLoader.forEach(languageProviders::add);
-        ImmediateWindowHandler.updateProgress("Loading language providers");
-        languageProviders.forEach(lp -> {
-            final Path lpPath;
-            try {
-                lpPath = Paths.get(lp.getClass().getProtectionDomain().getCodeSource().getLocation().toURI());
-            } catch (URISyntaxException e) {
-                throw new RuntimeException("Huh?", e);
-            }
-            Optional<String> implementationVersion = JarVersionLookupHandler.getImplementationVersion(lp.getClass());
-            String impl = implementationVersion.orElse(Files.isDirectory(lpPath) ? FMLLoader.versionInfo().forgeVersion().split("\\.")[0] : null);
-            if (impl == null) {
-                LOGGER.error(CORE, "Found unversioned language provider {}", lp.name());
-                throw new RuntimeException("Failed to find implementation version for language provider "+ lp.name());
-            }
-            LOGGER.debug(CORE, "Found language provider {}, version {}", lp.name(), impl);
-            ImmediateWindowHandler.updateProgress("Loaded language provider "+lp.name()+ " " + impl);
-            languageProviderMap.put(lp.name(), new ModLanguageWrapper(lp, new DefaultArtifactVersion(impl)));
-        });
-    }
+        providers.clear();
+        providersByName.clear();
 
-    void addForgeLanguage(final Path forgePath) {
-        if (!languageProviderMap.containsKey("javafml")) {
-            LOGGER.debug(CORE,"Adding forge as a language from {}", forgePath.toString());
-            addLanguagePaths(Stream.of(forgePath));
-            serviceLoader.reload();
-            loadLanguageProviders();
-        } else {
-            LOGGER.debug(CORE, "Skipping adding forge jar - javafml is already present");
-        }
-    }
-
-    private void addLanguagePaths(final Stream<Path> langPaths) {
-        languageProviders.clear();
-        languageProviderMap.clear();
-//        langPaths.peek(languagePaths::add).map(Path::toFile).map(File::toURI).map(rethrowFunction(URI::toURL)).forEach(languageClassLoader::addURL);
-    }
-
-    public void addAdditionalLanguages(List<ModFile> modFiles)
-    {
-        if (modFiles==null) return;
-        Stream<Path> langPaths = modFiles.stream().map(ModFile::getFilePath);
-        addLanguagePaths(langPaths);
         serviceLoader.reload();
-        loadLanguageProviders();
-    }
-
-    Stream<Path> getLibraries() {
-        return languagePaths.stream();
-    }
-
-    public IModLanguageProvider findLanguage(ModFile mf, String modLoader, VersionRange modLoaderVersion) {
-        final String languageFileName = mf.getProvider() instanceof ExplodedDirectoryLocator ? "in-development" : mf.getFileName();
-        final ModLanguageWrapper mlw = languageProviderMap.get(modLoader);
-        if (mlw == null) {
-            LOGGER.error(LOADING,"Missing language {} version {} wanted by {}", modLoader, modLoaderVersion, languageFileName);
-            throw new EarlyLoadingException("Missing language "+modLoader, null, Collections.singletonList(new EarlyLoadingException.ExceptionData("fml.language.missingversion", modLoader, modLoaderVersion, languageFileName, "null")));
-        }
-        if (!VersionSupportMatrix.testVersionSupportMatrix(modLoaderVersion, modLoader, "languageloader", (llid, range) -> range.containsVersion(mlw.getVersion()))) {
-            LOGGER.error(LOADING,"Missing language {} version {} wanted by {}, found {}", modLoader, modLoaderVersion, languageFileName, mlw.getVersion());
-            throw new EarlyLoadingException("Missing language "+ modLoader + " matching range "+modLoaderVersion + " found "+mlw.getVersion(), null, Collections.singletonList(new EarlyLoadingException.ExceptionData("fml.language.missingversion", modLoader, modLoaderVersion, languageFileName, mlw.getVersion())));
+        for (var itr = serviceLoader.iterator(); itr.hasNext(); ) {
+            try {
+                var srvc = itr.next();
+                providers.add(srvc);
+            } catch (ServiceConfigurationError sce) {
+                LOGGER.error(CORE, "Failed to load IModLauguageProvider Service: " + sce.getMessage());
+            }
         }
 
-        return mlw.getModLanguageProvider();
+        LOGGER.debug(CORE, "Found {} language providers", providers.size());
+
+        ImmediateWindowHandler.updateProgress("Loading language providers");
+        for (var provider : providers) {
+            var info = JarVersionLookupHandler.getInfo(provider.getClass());
+
+            if (info.impl().version().isEmpty() && FMLEnvironment.production) {
+                LOGGER.error(CORE, "Found unversioned language provider {}: {}", provider.name(), provider.getClass().getName());
+                throw new RuntimeException("Failed to find implementation version for language provider " + provider.name() + " of type " + provider.getClass().getName());
+            }
+
+            var version = info.impl().version().map(DefaultArtifactVersion::new).orElse(IN_DEV);
+
+            LOGGER.debug(CORE, "Found language provider {}, version {}", provider.name(), version);
+            ImmediateWindowHandler.updateProgress("Loaded language provider " + provider.name() + " " + version);
+            providersByName.put(provider.name(), new Wrapper(version, provider));
+        }
+    }
+
+    public IModLanguageProvider findLanguage(ModFile mod, String language, VersionRange versionRange) {
+        var consumer = mod.getFileName();
+        var wrapper = providersByName.get(language);
+
+        if (wrapper == null) {
+            LOGGER.error(LOADING, "Missing language {} version {} wanted by {}", language, versionRange, consumer);
+            var data = new EarlyLoadingException.ExceptionData("fml.language.missingversion", language, versionRange, consumer, "null");
+            throw new EarlyLoadingException("Missing language " + language, null, List.of(data));
+        }
+
+        var version = wrapper.version();
+        if (version == IN_DEV) {
+            LOGGER.debug(LOADING, "Language Provider {} version is unknown, but {} was requested by {}. Proceeding as this is development environement", language, versionRange, consumer);
+            return wrapper.service();
+        }
+
+        if (!versionRange.containsVersion(version)) {
+            LOGGER.error(LOADING, "Missing language {} version {} wanted by {}, found {}", language, versionRange, consumer, version);
+            var data = new EarlyLoadingException.ExceptionData("fml.language.missingversion", language, versionRange, consumer, version);
+            throw new EarlyLoadingException("Missing language " + language + " matching range " + versionRange + " found " + version, null, List.of(data));
+        }
+
+        return wrapper.service();
     }
 }

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

@@ -8,21 +8,19 @@ package net.minecraftforge.fml.loading;
 import com.mojang.logging.LogUtils;
 import org.slf4j.Logger;
 
-import static net.minecraftforge.fml.loading.LogMarkers.CORE;
-
 public class LauncherVersion {
     private static final Logger LOGGER = LogUtils.getLogger();
     private static final String launcherVersion;
 
     static {
-        String vers = JarVersionLookupHandler.getImplementationVersion(LauncherVersion.class).orElse(System.getenv("LAUNCHER_VERSION"));
-        if (vers == null) throw new RuntimeException("Missing FMLLauncher version, cannot continue");
-        launcherVersion = vers;
-        LOGGER.debug(CORE, "Found FMLLauncher version {}", launcherVersion);
+        var info = JarVersionLookupHandler.getInfo(LauncherVersion.class);
+        if (info.impl().version().isEmpty())
+            throw new IllegalStateException("Failed to find version for package " + LauncherVersion.class.getPackageName() + " This is an invalid environment");
+        launcherVersion = info.impl().version().get();
+        LOGGER.debug(LogMarkers.CORE, "Found FMLLauncher version {}", launcherVersion);
     }
 
-    public static String getVersion()
-    {
+    public static String getVersion() {
         return launcherVersion;
     }
 }

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

@@ -5,45 +5,20 @@
 
 package net.minecraftforge.fml.loading;
 
-import com.mojang.logging.LogUtils;
-import org.slf4j.Logger;
-
 import java.nio.file.Files;
 import java.nio.file.Path;
 
 public class LibraryFinder {
-    private static final Logger LOGGER = LogUtils.getLogger();
     private static Path libsPath;
     static Path findLibsPath() {
         if (libsPath == null) {
-            libsPath = Path.of(System.getProperty("libraryDirectory","crazysnowmannonsense/cheezwhizz"));
-            if (!Files.isDirectory(libsPath)) {
-                throw new IllegalStateException("Missing libraryDirectory system property, cannot continue");
-            }
+            libsPath = Path.of(System.getProperty("libraryDirectory", "libraries"));
+            if (!Files.isDirectory(libsPath))
+                throw new IllegalStateException("Library directory: `" + libsPath + "` does not exist. Set it via the `libraryDirectory` system property.");
         }
         return libsPath;
     }
 
-    static Path getForgeLibraryPath(final String mcVersion, final String forgeVersion, final String forgeGroup) {
-        Path forgePath = findLibsPath().resolve(MavenCoordinateResolver.get(forgeGroup, "forge", "", "universal", mcVersion+"-"+forgeVersion));
-        LOGGER.debug(LogMarkers.CORE, "Found forge path {} is {}", forgePath, pathStatus(forgePath));
-        return forgePath;
-    }
-
-    static String pathStatus(final Path path) {
-        return Files.exists(path) ? "present" : "missing";
-    }
-
-    static Path[] getMCPaths(final String mcVersion, final String mcpVersion, final String forgeVersion, final String forgeGroup, final String type) {
-        Path srgMcPath = findLibsPath().resolve(MavenCoordinateResolver.get("net.minecraft", type, "", "srg", mcVersion+"-"+mcpVersion));
-        Path mcExtrasPath = findLibsPath().resolve(MavenCoordinateResolver.get("net.minecraft", type, "", "extra", mcVersion+"-"+mcpVersion));
-        Path patchedBinariesPath = findLibsPath().resolve(MavenCoordinateResolver.get(forgeGroup, "forge", "", type, mcVersion+"-"+forgeVersion));
-        LOGGER.debug(LogMarkers.CORE,"SRG MC at {} is {}", srgMcPath.toString(), pathStatus(srgMcPath));
-        LOGGER.debug(LogMarkers.CORE,"MC Extras at {} is {}", mcExtrasPath.toString(), pathStatus(mcExtrasPath));
-        LOGGER.debug(LogMarkers.CORE,"Forge patches at {} is {}", patchedBinariesPath.toString(), pathStatus(patchedBinariesPath));
-        return new Path[] { patchedBinariesPath, mcExtrasPath, srgMcPath };
-    }
-
     public static Path findPathForMaven(final String group, final String artifact, final String extension, final String classifier, final String version) {
         return findLibsPath().resolve(MavenCoordinateResolver.get(group, artifact, extension, classifier, version));
     }

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

@@ -8,8 +8,6 @@ package net.minecraftforge.fml.loading;
 import com.google.common.graph.GraphBuilder;
 import com.google.common.graph.MutableGraph;
 import com.mojang.logging.LogUtils;
-import cpw.mods.jarhandling.SecureJar;
-import net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator;
 import net.minecraftforge.forgespi.language.IModInfo;
 import net.minecraftforge.fml.loading.EarlyLoadingException.ExceptionData;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
@@ -21,10 +19,14 @@ import org.apache.maven.artifact.versioning.ArtifactVersion;
 import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
 import org.slf4j.Logger;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+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.jar.Manifest;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -150,27 +152,13 @@ public class ModSorter
                   ));
     }
 
-    private void detectSystemMods(final Map<String, List<ModFile>> modFilesByFirstId)
-    {
+    private void detectSystemMods(final Map<String, List<ModFile>> modFilesByFirstId) {
         // Capture system mods (ex. MC, Forge) here, so we can keep them for later
-        final Set<String> systemMods = new HashSet<>();
-        // The minecraft mod is always a system mod
-        systemMods.add("minecraft");
-        // Find mod file from MinecraftLocator to define the system mods
-        modFiles.stream()
-                .filter(modFile -> modFile.getProvider().getClass() == MinecraftLocator.class)
-                .map(ModFile::getSecureJar)
-                .map(SecureJar::moduleDataProvider)
-                .map(SecureJar.ModuleDataProvider::getManifest)
-                .map(Manifest::getMainAttributes)
-                .map(mf -> mf.getValue("FML-System-Mods"))
-                .filter(Objects::nonNull)
-                .findFirst()
-                .ifPresent(value -> systemMods.addAll(Arrays.asList(value.split(","))));
+        var systemMods = List.of("minecraft", "forge");
         LOGGER.debug("Configured system mods: {}", systemMods);
 
         this.systemMods = new ArrayList<>();
-        for (String systemMod : systemMods) {
+        for (var systemMod : systemMods) {
             var container = modFilesByFirstId.get(systemMod);
             if (container != null && !container.isEmpty()) {
                 LOGGER.debug("Found system mod: {}", systemMod);

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

@@ -5,42 +5,37 @@
 
 package net.minecraftforge.fml.loading;
 
-import com.google.common.collect.ImmutableMap;
 import net.minecraftforge.fml.loading.moddiscovery.ModFile;
-import org.apache.commons.lang3.text.StrLookup;
-import org.apache.commons.lang3.text.StrSubstitutor;
 
 import java.util.Map;
 
-@SuppressWarnings("deprecation")
-public class StringSubstitutor
-{
-    private static final Map<String,String> globals = ImmutableMap.of(
-            "mcVersion", FMLLoader.versionInfo().mcVersion(),
-            "forgeVersion", FMLLoader.versionInfo().forgeVersion()
-    );
+import org.apache.commons.lang3.text.StrLookup;
+import org.apache.commons.lang3.text.StrSubstitutor;
 
+@SuppressWarnings("deprecation")
+public class StringSubstitutor {
     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<String>()
-        {
+        var globals = Map.of(
+            "mcVersion", FMLLoader.versionInfo().mcVersion(),
+            "forgeVersion", FMLLoader.versionInfo().forgeVersion()
+        );
+        return new StrLookup<String>() {
             @Override
-            public String lookup(String key)
-            {
-                final String[] parts = key.split("\\.");
-                if (parts.length == 1) return key;
-                final String pfx = parts[0];
+            public String lookup(String key) {
+                var parts = key.split("\\.");
+                if (parts.length == 1)
+                    return key;
+                var pfx = parts[0];
+
                 if ("global".equals(pfx))
-                {
                     return globals.get(parts[1]);
-                }
                 else if ("file".equals(pfx) && file != null)
-                {
                     return String.valueOf(file.getSubstitutionMap().get().get(parts[1]));
-                }
+
                 return key;
             }
         };

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

@@ -5,18 +5,45 @@
 
 package net.minecraftforge.fml.loading;
 
-import java.util.Map;
+import java.io.IOException;
+import java.io.InputStreamReader;
 
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonSyntaxException;
+
+/** TODO: [FML][Loader] Remove VersionInfo - we shouldn't need to base any decisions on forge or mc version info at the loader level. So once I get a proper replacement i'm gunna kill this. */
 public record VersionInfo(String forgeVersion, String mcVersion, String mcpVersion, String forgeGroup) {
-    VersionInfo(Map<String, ?> arguments) {
-        this((String) arguments.get("forgeVersion"), (String) arguments.get("mcVersion"), (String) arguments.get("mcpVersion"), (String) arguments.get("forgeGroup"));
-    }
-
     public String mcAndForgeVersion() {
-        return mcVersion+"-"+forgeVersion;
+        return mcVersion + "-" + forgeVersion;
     }
 
     public String mcAndMCPVersion() {
         return mcVersion + "-" + mcpVersion;
     }
+
+    /*==========================================================================*
+     *                        INTERNAL SHIT                                     *
+     *==========================================================================*/
+    private static Gson GSON = new GsonBuilder().create();
+    private static <T> T readJson(String path, Class<T> type) {
+        try (var is = VersionInfo.class.getResourceAsStream(path)) {
+            if (is == null)
+                return null;
+
+            try (var reader = new InputStreamReader(is)) {
+                return GSON.fromJson(reader, type);
+            }
+        } catch (IOException | JsonSyntaxException e) {
+            throw new IllegalStateException("Failed to parse version info from " + path , e);
+        }
+    }
+
+    static VersionInfo detect() {
+        var forge = readJson("/forge_version.json", JSON.class);
+        if (forge == null)
+            throw new IllegalStateException("Failed to find /forge_version.json This is a critical issue");
+        return new VersionInfo(forge.forge(), forge.mc(), forge.mcp(), "net.minecraftforge");
+    }
+    private record JSON(String forge, String mcp, String mc) {}
 }

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

@@ -18,7 +18,7 @@ import java.util.function.BiPredicate;
 public class VersionSupportMatrix {
     private static final HashMap<String, List<ArtifactVersion>> overrideVersions = new HashMap<>();
     static {
-        final ArtifactVersion version = new DefaultArtifactVersion(FMLLoader.versionInfo().mcVersion());
+         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");
@@ -31,7 +31,7 @@ public class VersionSupportMatrix {
     }
     public static <T> boolean testVersionSupportMatrix(VersionRange declaredRange, String lookupId, String type, BiPredicate<String, VersionRange> standardLookup) {
         if (standardLookup.test(lookupId, declaredRange)) return true;
-        List<ArtifactVersion> custom = overrideVersions.get(type +"." +lookupId);
+        List<ArtifactVersion> custom = overrideVersions.get(type + "." + lookupId);
         return custom == null ? false  : custom.stream().anyMatch(declaredRange::containsVersion);
     }
 }

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

@@ -1,52 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import com.mojang.logging.LogUtils;
-import net.minecraftforge.forgespi.locating.IDependencyLocator;
-import net.minecraftforge.forgespi.locating.IModFile;
-import net.minecraftforge.forgespi.locating.ModFileLoadingException;
-import org.slf4j.Logger;
-
-import java.io.FileNotFoundException;
-import java.io.InputStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.Optional;
-
-public abstract class AbstractJarFileDependencyLocator extends AbstractJarFileModProvider implements IDependencyLocator
-{
-    private static final Logger LOGGER = LogUtils.getLogger();
-
-    protected Optional<InputStream> loadResourceFromModFile(final IModFile modFile, final Path path) {
-        try {
-            return Optional.of(Files.newInputStream(modFile.findResource(path.toString())));
-        }
-        catch (final FileNotFoundException e) {
-            LOGGER.debug("Failed to load resource {} from {}, it does not contain dependency information.", path, modFile.getFileName());
-            return Optional.empty();
-        }
-        catch (final Exception e) {
-            LOGGER.error("Failed to load resource {} from mod {}, cause {}", path, modFile.getFileName(), e);
-            return Optional.empty();
-        }
-    }
-
-    protected Optional<IModFile> loadModFileFrom(final IModFile file, final Path path) {
-        try {
-            final Path pathInModFile = file.findResource(path.toString());
-            return Optional.of(createMod(pathInModFile).file());
-        }
-        catch (Exception e) {
-            LOGGER.error("Failed to load mod file {} from {}", path, file.getFileName());
-            throw new ModFileLoadingException("Failed to load mod file "+file.getFileName());
-        }
-    }
-
-    protected String identifyMod(final IModFile modFile) {
-        return modFile.getFileName();
-    }
-}

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

@@ -1,23 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import net.minecraftforge.forgespi.locating.IModLocator;
-
-import java.nio.file.Path;
-import java.util.List;
-import java.util.stream.Stream;
-
-public abstract class AbstractJarFileModLocator extends AbstractJarFileModProvider implements IModLocator
-{
-    @Override
-    public List<IModLocator.ModFileOrException> scanMods()
-    {
-        return scanCandidates().map(this::createMod).toList();
-    }
-
-    public abstract Stream<Path> scanCandidates();
-}

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

@@ -1,36 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import com.mojang.logging.LogUtils;
-import cpw.mods.jarhandling.SecureJar;
-import net.minecraftforge.fml.loading.LogMarkers;
-import net.minecraftforge.forgespi.locating.IModFile;
-import org.slf4j.Logger;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.function.Consumer;
-import java.util.function.Function;
-import java.util.stream.Stream;
-
-public abstract class AbstractJarFileModProvider extends AbstractModProvider
-{
-    private static final Logger LOGGER = LogUtils.getLogger();
-
-    @Override
-    public void scanFile(final IModFile file, final Consumer<Path> pathConsumer) {
-        LOGGER.debug(LogMarkers.SCAN,"Scan started: {}", file);
-        final Function<Path, SecureJar.Status> status = p->file.getSecureJar().verifyPath(p);
-        try (Stream<Path> files = Files.find(file.getSecureJar().getRootPath(), Integer.MAX_VALUE, (p, a) -> p.getNameCount() > 0 && p.getFileName().toString().endsWith(".class"))) {
-            file.setSecurityStatus(files.peek(pathConsumer).map(status).reduce((s1, s2)-> SecureJar.Status.values()[Math.min(s1.ordinal(), s2.ordinal())]).orElse(SecureJar.Status.INVALID));
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        LOGGER.debug(LogMarkers.SCAN,"Scan finished: {}", file);
-    }
-}

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

@@ -16,26 +16,28 @@ import net.minecraftforge.forgespi.locating.IModFile;
 import net.minecraftforge.forgespi.locating.IModLocator;
 import net.minecraftforge.forgespi.locating.IModProvider;
 import net.minecraftforge.forgespi.locating.ModFileLoadingException;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
+import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
-import java.util.function.Function;
-import java.util.jar.Manifest;
+import java.util.function.Consumer;
+import java.util.jar.JarFile;
 
+@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 MANIFEST = "META-INF/MANIFEST.MF";
 
-    protected IModLocator.ModFileOrException createMod(Path... path) {
+    protected IModLocator.ModFileOrException createMod(Path path) {
         var mjm = new ModJarMetadata();
         var sj = SecureJar.from(
-            Manifest::new,
             jar -> jar.moduleDataProvider().findFile(MODS_TOML).isPresent() ? mjm : JarMetadata.from(jar, path),
             path
         );
@@ -49,18 +51,18 @@ public abstract class AbstractModProvider implements IModProvider {
             LOGGER.debug(LogMarkers.SCAN, "Found {} mod of type {}: {}", MODS_TOML, type, path);
             mod = new ModFile(sj, this, ModFileParser::modsTomlParser);
         } else if (type != null) {
-            LOGGER.debug(LogMarkers.SCAN, "Found {} mod of type {}: {}", MANIFEST, type, path);
+            LOGGER.debug(LogMarkers.SCAN, "Found {} mod of type {}: {}", JarFile.MANIFEST_NAME, type, path);
             mod = new ModFile(sj, this, this::manifestParser, type);
         } else
-            return new IModLocator.ModFileOrException(null, new ModFileLoadingException("Invalid mod file found " + Arrays.toString(path)));
+            return new IModLocator.ModFileOrException(null, new ModFileLoadingException("Invalid mod file found " + path));
 
         mjm.setModFile(mod);
         return new IModLocator.ModFileOrException(mod, null);
     }
 
     protected IModFileInfo manifestParser(final IModFile mod) {
-        Function<String, Optional<String>> cfg = name -> Optional.ofNullable(mod.getSecureJar().moduleDataProvider().getManifest().getMainAttributes().getValue(name));
-        var license = cfg.apply("LICENSE").orElse("");
+        var mf = mod.getSecureJar().moduleDataProvider().getManifest().getMainAttributes();
+        var license = mf.getValue("LICENSE");
         var dummy = new IConfigurable() {
             @Override
             public <T> Optional<T> getConfigElement(String... key) {
@@ -72,7 +74,7 @@ public abstract class AbstractModProvider implements IModProvider {
             }
         };
 
-        return new DefaultModFileInfo(mod, license, dummy);
+        return new DefaultModFileInfo(mod, license == null ? "" : license, dummy);
     }
 
     @Override
@@ -80,10 +82,50 @@ public abstract class AbstractModProvider implements IModProvider {
         return true;
     }
 
+    @Override
+    public void initArguments(final Map<String, ?> arguments) {
+    }
+
     protected String getDefaultJarModType() {
         return null;
     }
 
+    @Override
+    public void scanFile(IModFile file, Consumer<Path> pathConsumer) {
+        LOGGER.debug(LogMarkers.SCAN, "Scan started: {}", file);
+        var jar = file.getSecureJar();
+        var root = jar.getRootPath();
+        Consumer<Path> consumer = pathConsumer;
+
+        //TODO: [SecureJar] Actually redesign this to have a proper validation.
+        var holder = new Holder<SecureJar.Status>();
+        holder.value = SecureJar.Status.NONE;
+        if (jar.hasSecurityData()) {
+            consumer = path -> {
+                pathConsumer.accept(path);
+                var status = jar.verifyPath(path);
+                if (status.ordinal() < holder.value.ordinal())
+                    holder.value = status;
+            };
+        }
+
+        try {
+            Files.walk(root)
+                .filter(p -> p.toString().endsWith(".class"))
+                .forEach(consumer);
+
+            file.setSecurityStatus(holder.value);
+        } catch(IOException e) {
+            e.printStackTrace();
+        }
+
+        LOGGER.debug(LogMarkers.SCAN, "Scan finished: {}", file);
+    }
+
+    private static class Holder<T> {
+        T value;
+    }
+
     private record DefaultModFileInfo(IModFile mod, String license, IConfigurable configurable) implements IModFileInfo, IConfigurable {
         @Override public <T> Optional<T> getConfigElement(final String... strings) { return Optional.empty(); }
         @Override public List<? extends IConfigurable> getConfigList(final String... strings) { return null; }

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

@@ -5,68 +5,109 @@
 
 package net.minecraftforge.fml.loading.moddiscovery;
 
-import net.minecraftforge.fml.loading.ClasspathLocatorUtils;
 import com.mojang.logging.LogUtils;
+
 import net.minecraftforge.fml.loading.LogMarkers;
+import net.minecraftforge.forgespi.locating.IModLocator;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
-import java.io.File;
 import java.io.IOException;
+import java.net.URI;
 import java.net.URL;
-import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Enumeration;
+import java.util.Collections;
+import java.util.HashSet;
 import java.util.List;
-import java.util.Map;
-import java.util.stream.Stream;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
+import java.util.jar.Manifest;
 
-public class ClasspathLocator extends AbstractJarFileModLocator {
+@ApiStatus.Internal
+public class ClasspathLocator extends AbstractModProvider implements IModLocator {
     private static final Logger LOGGER = LogUtils.getLogger();
-    private final List<Path> legacyClasspath = Arrays.stream(System.getProperty("legacyClassPath", "").split(File.pathSeparator)).map(Path::of).toList();
-    private boolean enabled = false;
+    private static final Attributes.Name MOD_TYPE = new Attributes.Name("FMLModType");
 
     @Override
     public String name() {
-        return "userdev classpath";
+        return "classpath";
     }
 
     @Override
-    public Stream<Path> scanCandidates() {
-        if (!enabled)
-            return Stream.of();
+    public List<ModFileOrException> scanMods() {
+        //var cl = ClassLoader.getSystemClassLoader();
+        var cl = getClass().getClassLoader();
 
-        try {
-            var claimed = new ArrayList<>(legacyClasspath);
-            var paths = Stream.<Path>builder();
+        // Find 'minecraft' during dev time this is also Forge. So skip it.
+        // Can return null for dedicated server as Minecraft isn't on the classpath
+        // On the client it doesn't matter as it's the vanilla jar so wouldnt have mods.toml in it.
+        var minecraft = getPathFromResource(cl, "net/minecraft/obfuscate/DontObfuscate.class");
 
-            findPaths(claimed, MODS_TOML).forEach(paths::add);
-            findPaths(claimed, MANIFEST).forEach(paths::add);
-
-            return paths.build();
-        } catch (IOException e) {
-            LOGGER.error(LogMarkers.SCAN, "Error trying to find resources", e);
-            throw new RuntimeException(e);
+        var claimed = new HashSet<Path>();
+        var tomls = getUrls(cl, MODS_TOML);
+        for (var url : tomls) {
+            var path = getPath(url, MODS_TOML);
+            if (!path.equals(minecraft))
+                claimed.add(path);
         }
-    }
 
-    private List<Path> findPaths(List<Path> claimed, String resource) throws IOException {
-        var ret = new ArrayList<Path>();
-        final Enumeration<URL> resources = ClassLoader.getSystemClassLoader().getResources(resource);
-        while (resources.hasMoreElements()) {
-            URL url = resources.nextElement();
-            Path path = ClasspathLocatorUtils.findJarPathFor(resource, resource, url);
-            if (claimed.stream().anyMatch(path::equals) || !Files.exists(path) || Files.isDirectory(path))
+        var manifests = getUrls(cl, JarFile.MANIFEST_NAME);
+        for (var url : manifests) {
+            var path = getPath(url, JarFile.MANIFEST_NAME);
+            if (claimed.contains(path))
                 continue;
-            ret.add(path);
+
+            try (var is = url.openStream()) {
+                var mf = new Manifest(is);
+                var type = mf.getMainAttributes().getValue(MOD_TYPE);
+                if (type != null)
+                    claimed.add(path);
+            } catch (IOException e) {
+                LOGGER.warn(LogMarkers.SCAN, "Error reading manifest from: " + url, e);
+            }
         }
+
+        var ret = new ArrayList<ModFileOrException>();
+        for (var path : claimed)
+            ret.add(createMod(path));
         return ret;
     }
 
-    @Override
-    public void initArguments(Map<String, ?> arguments) {
-        var launchTarget = (String) arguments.get("launchTarget");
-        enabled = launchTarget != null && launchTarget.contains("dev");
+    private List<URL> getUrls(ClassLoader cl, String resource) {
+        try {
+            var lst = Collections.list(cl.getResources(resource));
+            if (LOGGER.isDebugEnabled(LogMarkers.SCAN)) {
+                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);
+            }
+            return lst;
+        } catch (IOException e) {
+            LOGGER.warn(LogMarkers.SCAN, "Error finding resources for: " + resource, e);
+            return List.of();
+        }
+    }
+
+    private static Path getPath(URL url, String resource) {
+        var str = url.toString();
+        int len = resource.length();
+        if ("jar".equalsIgnoreCase(url.getProtocol())) {
+            str = url.getFile();
+            len += 2;
+        }
+        str = str.substring(0, str.length() - len);
+        var path = Paths.get(URI.create(str));
+        return path;
+    }
+
+    private static Path getPathFromResource(ClassLoader cl, String resource) {
+        var url = cl.getResource(resource);
+        if (url == null)
+            return null;
+        return getPath(url, resource);
     }
 }

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

@@ -12,6 +12,9 @@ import java.io.Reader;
 import java.nio.file.Files;
 import java.nio.file.Path;
 
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
 public class CoreModFile implements ICoreModFile {
     private final Path internalPath;
     private final ModFile file;

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

@@ -1,78 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import com.mojang.logging.LogUtils;
-import net.minecraftforge.fml.loading.LogMarkers;
-import net.minecraftforge.forgespi.locating.IModFile;
-import net.minecraftforge.forgespi.locating.IModLocator;
-import org.slf4j.Logger;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.function.Consumer;
-import java.util.stream.Stream;
-
-public class ExplodedDirectoryLocator implements IModLocator {
-    private static final Logger LOGGER = LogUtils.getLogger();
-
-    public record ExplodedMod(String modid, List<Path> paths) {}
-
-    private final List<ExplodedMod> explodedMods = new ArrayList<>();
-    private final Map<ExplodedMod, IModFile> mods = new HashMap<>();
-
-    @Override
-    public List<IModLocator.ModFileOrException> scanMods() {
-        explodedMods.forEach(explodedMod ->
-                ModJarMetadata.buildFile(this,
-                        jar->jar.moduleDataProvider().findFile("/META-INF/mods.toml").isPresent(),
-                        null,
-                        explodedMod.paths().toArray(Path[]::new))
-                .ifPresentOrElse(f->mods.put(explodedMod, f), () -> LOGGER.warn(LogMarkers.LOADING, "Failed to find exploded resource mods.toml in directory {}", explodedMod.paths().get(0).toString())));
-        return mods.values().stream().map(mf->new IModLocator.ModFileOrException(mf, null)).toList();
-    }
-
-    @Override
-    public String name() {
-        return "exploded directory";
-    }
-
-    @Override
-    public void scanFile(final IModFile file, final Consumer<Path> pathConsumer) {
-        LOGGER.debug(LogMarkers.SCAN,"Scanning exploded directory {}", file.getFilePath().toString());
-        try (Stream<Path> files = Files.find(file.getSecureJar().getRootPath(), Integer.MAX_VALUE, (p, a) -> p.getNameCount() > 0 && p.getFileName().toString().endsWith(".class"))) {
-            files.forEach(pathConsumer);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        LOGGER.debug(LogMarkers.SCAN,"Exploded directory scan complete {}", file.getFilePath().toString());
-    }
-
-    @Override
-    public String toString()
-    {
-        return "{ExplodedDir locator}";
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public void initArguments(final Map<String, ?> arguments) {
-        final var explodedTargets = ((Map<String, List<ExplodedMod>>) arguments).get("explodedTargets");
-        if (explodedTargets != null && !explodedTargets.isEmpty()) {
-            explodedMods.addAll(explodedTargets);
-        }
-    }
-
-    @Override
-    public boolean isValid(final IModFile modFile) {
-        return true;
-    }
-}

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

@@ -10,17 +10,21 @@ import com.google.common.collect.Lists;
 import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.EarlyLoadingException;
 import net.minecraftforge.forgespi.language.IModInfo;
+import net.minecraftforge.forgespi.locating.IDependencyLocator;
 import net.minecraftforge.forgespi.locating.IModFile;
 import net.minecraftforge.forgespi.locating.ModFileLoadingException;
 import net.minecraftforge.jarjar.selection.JarSelector;
 import org.apache.maven.artifact.versioning.ArtifactVersion;
 import org.apache.maven.artifact.versioning.VersionRange;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 import org.slf4j.Logger;
 
+import java.io.InputStream;
 import java.net.URI;
 import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collection;
 import java.util.Collections;
@@ -30,26 +34,35 @@ import java.util.Optional;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-public class JarInJarDependencyLocator extends AbstractJarFileDependencyLocator
-{
+@ApiStatus.Internal
+public class JarInJarDependencyLocator extends AbstractModProvider implements IDependencyLocator {
+    private static final String COLOR_CODE = "\u00a7";
+    private static final String RESET  = COLOR_CODE + "r";
+    private static final String YELLOW = COLOR_CODE + "e";
+    private static final String RED    = COLOR_CODE + "4";
+    private static final String GREEN  = COLOR_CODE + "2";
+
     private static final Logger LOGGER = LogUtils.getLogger();
 
     @Override
-    public String name()
-    {
+    public String name() {
         return "JarInJar";
     }
 
     @Override
-    public List<IModFile> scanMods(final Iterable<IModFile> loadedMods)
-    {
+    public List<IModFile> scanMods(Iterable<IModFile> loadedMods) {
         final List<IModFile> sources = Lists.newArrayList();
         loadedMods.forEach(sources::add);
 
-        final List<IModFile> dependenciesToLoad = JarSelector.detectAndSelect(sources, this::loadResourceFromModFile, this::loadModFileFrom, this::identifyMod, this::exception);
+        var dependenciesToLoad = JarSelector.detectAndSelect(
+            sources,
+            this::loadResourceFromModFile,
+            this::loadModFileFrom,
+            this::identifyMod,
+            this::exception
+        );
 
-        if (dependenciesToLoad.isEmpty())
-        {
+        if (dependenciesToLoad.isEmpty()) {
             LOGGER.info("No dependencies to load found. Skipping!");
             return Collections.emptyList();
         }
@@ -59,43 +72,27 @@ public class JarInJarDependencyLocator extends AbstractJarFileDependencyLocator
     }
 
     @Override
-    public void initArguments(final Map<String, ?> arguments)
-    {
-        // NO-OP, for now
-    }
-
-    @Override
-    protected String getDefaultJarModType()
-    {
+    protected String getDefaultJarModType() {
         return IModFile.Type.GAMELIBRARY.name();
     }
 
-    @SuppressWarnings("resource")
-    @Override
-    protected Optional<IModFile> loadModFileFrom(final IModFile file, final Path path)
-    {
-        try
-        {
+    protected Optional<IModFile> loadModFileFrom(IModFile file, Path path) {
+        try {
             final Path pathInModFile = file.findResource(path.toString());
             final URI filePathUri = new URI("jij:" + (pathInModFile.toAbsolutePath().toUri().getRawSchemeSpecificPart())).normalize();
             final Map<String, ?> outerFsArgs = ImmutableMap.of("packagePath", pathInModFile);
             final FileSystem zipFS = FileSystems.newFileSystem(filePathUri, outerFsArgs);
             final Path pathInFS = zipFS.getPath("/");
             return Optional.of(createMod(pathInFS).file());
-        }
-        catch (Exception e)
-        {
+        } catch (Exception e) {
             LOGGER.error("Failed to load mod file {} from {}", path, file.getFileName());
             final RuntimeException exception = new ModFileLoadingException("Failed to load mod file " + file.getFileName());
             exception.initCause(e);
-
             throw exception;
         }
     }
 
-    protected EarlyLoadingException exception(Collection<JarSelector.ResolutionFailureInformation<IModFile>> failedDependencies)
-    {
-
+    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(this::buildExceptionData)
@@ -105,8 +102,7 @@ public class JarInJarDependencyLocator extends AbstractJarFileDependencyLocator
     }
 
     @NotNull
-    private EarlyLoadingException.ExceptionData buildExceptionData(final JarSelector.ResolutionFailureInformation<IModFile> entry)
-    {
+    private EarlyLoadingException.ExceptionData buildExceptionData(JarSelector.ResolutionFailureInformation<IModFile> entry) {
         return new EarlyLoadingException.ExceptionData(
                 getErrorTranslationKey(entry),
                 entry.identifier().group() + ":" + entry.identifier().artifact(),
@@ -119,16 +115,14 @@ public class JarInJarDependencyLocator extends AbstractJarFileDependencyLocator
     }
 
     @NotNull
-    private String getErrorTranslationKey(final 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 Stream<ModWithVersionRange> getModWithVersionRangeStream(final JarSelector.SourceWithRequestedVersionRange<IModFile> file)
-    {
+    private Stream<ModWithVersionRange> getModWithVersionRangeStream(JarSelector.SourceWithRequestedVersionRange<IModFile> file) {
         return file.sources()
                    .stream()
                    .map(IModFile::getModFileInfo)
@@ -136,23 +130,37 @@ public class JarInJarDependencyLocator extends AbstractJarFileDependencyLocator
                    .map(modInfo -> new ModWithVersionRange(modInfo, file.requestedVersionRange(), file.includedVersion()));
     }
 
-    @NotNull
-    private String formatError(final ModWithVersionRange modWithVersionRange)
-    {
-        return "\u00a7e" + modWithVersionRange.modInfo().getModId() + "\u00a7r - \u00a74" + modWithVersionRange.versionRange().toString() + "\u00a74 - \u00a72" + modWithVersionRange.artifactVersion().toString() + "\u00a72";
-    }
-
-    @Override
-    protected String identifyMod(final IModFile modFile)
-    {
-        if (modFile.getModFileInfo() == null || modFile.getModInfos().isEmpty())
-        {
-            return modFile.getFileName();
+    protected Optional<InputStream> loadResourceFromModFile(IModFile modFile, Path path) {
+        try {
+            var pathInModFile = modFile.findResource(path.toString());
+            if (!Files.exists(pathInModFile)) {
+                LOGGER.debug("Failed to load resource {} from {}, it does not contain dependency information.", path, modFile.getFileName());
+                return Optional.empty();
+            }
+            return Optional.of(Files.newInputStream(pathInModFile));
+        } catch (Exception e) {
+            LOGGER.error("Failed to load resource {} from mod {}, cause {}", path, modFile.getFileName(), e);
+            return Optional.empty();
         }
-
-        return modFile.getModInfos().stream().map(IModInfo::getModId).collect(Collectors.joining());
     }
 
-    private record ModWithVersionRange(IModInfo modInfo, VersionRange versionRange, ArtifactVersion artifactVersion)
-    {}
+    @NotNull
+    private String formatError(ModWithVersionRange modWithVersionRange){
+        return YELLOW + modWithVersionRange.modInfo().getModId() + RESET + " - " +
+               RED + modWithVersionRange.versionRange().toString() + RESET + " - " +
+               GREEN + modWithVersionRange.artifactVersion().toString() + RESET;
+    }
+
+    protected String identifyMod(IModFile modFile) {
+        if (modFile.getModFileInfo() != null && !modFile.getModInfos().isEmpty())
+            return modFile.getModInfos().stream().map(IModInfo::getModId).collect(Collectors.joining());
+
+        var module = modFile.getSecureJar().moduleDataProvider().name();
+        if (module != null && !module.isEmpty())
+            return module;
+
+        return modFile.getFileName();
+    }
+
+    private record ModWithVersionRange(IModInfo modInfo, VersionRange versionRange, ArtifactVersion artifactVersion) {}
 }

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

@@ -1,49 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import net.minecraftforge.fml.loading.FMLPaths;
-import net.minecraftforge.fml.loading.MavenCoordinateResolver;
-
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-public class MavenDirectoryLocator extends AbstractJarFileModLocator
-{
-    private List<Path> modCoords;
-
-    @Override
-    public Stream<Path> scanCandidates() {
-        return modCoords.stream();
-    }
-
-    @Override
-    public String name() {
-        return "maven libs";
-    }
-
-    public String toString() {
-        return "{Maven Directory locator for mods "+this.modCoords+"}";
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    public void initArguments(final Map<String, ?> arguments) {
-        final List<String> mavenRoots = (List<String>) arguments.get("mavenRoots");
-        final List<Path> mavenRootPaths = mavenRoots.stream().map(n -> FMLPaths.GAMEDIR.get().resolve(n)).collect(Collectors.toList());
-        final List<String> mods = (List<String>) arguments.get("mods");
-        final List<String> listedMods = ModListHandler.processModLists((List<String>) arguments.get("modLists"), mavenRootPaths);
-
-        List<Path> localModCoords = Stream.concat(mods.stream(),listedMods.stream()).map(MavenCoordinateResolver::get).collect(Collectors.toList());
-        // find the modCoords path in each supplied maven path, and turn it into a mod file. (skips not found files)
-
-        this.modCoords = localModCoords.stream().map(mc -> mavenRootPaths.stream().map(root -> root.resolve(mc)).filter(path -> Files.exists(path)).findFirst().orElseThrow(() -> new IllegalArgumentException("Failed to locate requested mod coordinate " + mc))).collect(Collectors.toList());
-    }
-}

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

@@ -6,62 +6,36 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import com.electronwill.nightconfig.core.Config;
-import com.mojang.logging.LogUtils;
 import cpw.mods.jarhandling.SecureJar;
 import net.minecraftforge.fml.loading.FMLLoader;
-import net.minecraftforge.fml.loading.LogMarkers;
 import net.minecraftforge.forgespi.language.IModFileInfo;
 import net.minecraftforge.forgespi.locating.IModFile;
 import net.minecraftforge.forgespi.locating.IModLocator;
 import net.minecraftforge.forgespi.locating.ModFileFactory;
-import org.slf4j.Logger;
-
-import java.io.IOException;
-import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.function.Consumer;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
 
-public class MinecraftLocator extends AbstractModProvider implements IModLocator
-{
-    private static final Logger LOGGER = LogUtils.getLogger();
+import org.jetbrains.annotations.ApiStatus;
 
+@ApiStatus.Internal
+public class MinecraftLocator extends AbstractModProvider implements IModLocator {
     @Override
     public List<IModLocator.ModFileOrException> scanMods() {
-        final var launchHandler = FMLLoader.getLaunchHandler();
-        var baseMC = launchHandler.getMinecraftPaths();
-        var mcjar = ModJarMetadata.buildFile(j->ModFileFactory.FACTORY.build(j, this, this::buildMinecraftTOML), j->true, baseMC.minecraftFilter(), baseMC.minecraftPaths().toArray(Path[]::new)).orElseThrow();
-        var artifacts = baseMC.otherArtifacts().stream()
-                .map(SecureJar::from)
-                .map(sj -> new ModFile(sj, this, ModFileParser::modsTomlParser))
-                .collect(Collectors.<IModFile>toList());
-        var othermods = baseMC.otherModPaths().stream()
-                .map(p -> createMod(p.toArray(Path[]::new)))
-                .filter(Objects::nonNull);
-        artifacts.add(mcjar);
+        var minecraft = FMLLoader.getLaunchHandler().getMinecraftPaths();
 
-        return Stream.concat(artifacts.stream().map(f -> new ModFileOrException(f, null)), othermods).toList();
+        // Minecraft itself.
+        var meta = new ModJarMetadata();
+        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 IModFileInfo buildMinecraftTOML(final IModFile iModFile) {
-        final ModFile modFile = (ModFile) iModFile;
-        /*
-        final Path mcmodtoml = modFile.findResource("META-INF", "minecraftmod.toml");
-        if (Files.notExists(mcmodtoml)) {
-            LOGGER.fatal(LOADING, "Mod file {} is missing minecraftmod.toml file", modFile.getFilePath());
-            return null;
-        }
-
-        final FileConfig mcmodstomlfile = FileConfig.builder(mcmodtoml).build();
-        mcmodstomlfile.load();
-        mcmodstomlfile.close();
-        */
-
-
         // 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");
@@ -76,47 +50,13 @@ public class MinecraftLocator extends AbstractModProvider implements IModLocator
         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));
-        /*
-        conf.putAll(mcmodstomlfile);
 
-        final var extralangs = Stream.<IModFileInfo.LanguageSpec>builder();
-        final Path forgemodtoml = modFile.findResource("META-INF", "mods.toml");
-        if (Files.notExists(forgemodtoml)) {
-            LOGGER.info("No forge mods.toml file found, not loading forge mod");
-        } else {
-            final FileConfig forgemodstomlfile = FileConfig.builder(forgemodtoml).build();
-            forgemodstomlfile.load();
-            forgemodstomlfile.close();
-            conf.putAll(forgemodstomlfile);
-            conf.<List<Object>>get("mods").add(0, mcmodstomlfile.<List<Object>>get("mods").get(0)); // Add MC as a sub-mod
-            extralangs.add(new IModFileInfo.LanguageSpec(mcmodstomlfile.get("modLoader"), MavenVersionAdapter.createFromVersionSpec(mcmodstomlfile.get("loaderVersion"))));
-        }
-        */
-
-
-        final NightConfigWrapper configWrapper = new NightConfigWrapper(conf);
-        //final ModFileInfo modFileInfo = new ModFileInfo(modFile, configWrapper, extralangs.build().toList());
-        return new ModFileInfo(modFile, configWrapper, configWrapper::setFile, List.of());
+        var configWrapper = new NightConfigWrapper(conf);
+        return new ModFileInfo((ModFile)iModFile, configWrapper, configWrapper::setFile, List.of());
     }
 
     @Override
     public String name() {
         return "minecraft";
     }
-
-    @Override
-    public void scanFile(final IModFile modFile, final Consumer<Path> pathConsumer) {
-        LOGGER.debug(LogMarkers.SCAN, "Scan started: {}", modFile);
-        try (Stream<Path> files = Files.find(modFile.getSecureJar().getRootPath(), Integer.MAX_VALUE, (p, a) -> p.getNameCount() > 0 && p.getFileName().toString().endsWith(".class"))) {
-            files.forEach(pathConsumer);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        LOGGER.debug(LogMarkers.SCAN, "Scan finished: {}", modFile);
-    }
-
-    @Override
-    public void initArguments(final Map<String, ?> arguments) {
-        // no op
-    }
 }

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

@@ -7,65 +7,42 @@ package net.minecraftforge.fml.loading.moddiscovery;
 
 import java.lang.annotation.ElementType;
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.Map;
 
 import net.minecraftforge.forgespi.language.ModFileScanData;
+import net.minecraftforge.forgespi.language.ModFileScanData.EnumData;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.objectweb.asm.Type;
 
 import com.google.common.base.MoreObjects;
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
 
-public class ModAnnotation
-{
-    public static ModFileScanData.AnnotationData fromModAnnotation(final Type clazz, final ModAnnotation annotation) {
+@ApiStatus.Internal
+class ModAnnotation {
+    public static ModFileScanData.AnnotationData fromModAnnotation(Type clazz, ModAnnotation annotation) {
         return new ModFileScanData.AnnotationData(annotation.asmType, annotation.type, clazz, annotation.member, annotation.values);
     }
 
-    public static class EnumHolder
-    {
-        private final String desc;
-        private final String value;
-
-        public EnumHolder(String desc, String value)
-        {
-            this.desc = desc;
-            this.value = value;
-        }
-
-        public String getDesc()
-        {
-            return desc;
-        }
-
-        public String getValue()
-        {
-            return value;
-        }
-    }
     private final ElementType type;
     private final Type asmType;
     private final String member;
-    private final Map<String,Object> values = Maps.newHashMap();
+    private final Map<String,Object> values = new HashMap<>();
 
     private ArrayList<Object> arrayList;
     private String arrayName;
-    public ModAnnotation(ElementType type, Type asmType, String member)
-    {
+    public ModAnnotation(ElementType type, Type asmType, String member) {
         this.type = type;
         this.asmType = asmType;
         this.member = member;
     }
-    
-    public ModAnnotation(Type asmType, ModAnnotation parent)
-    {
-        this.type = parent.type;
-        this.asmType = asmType;
-        this.member = parent.member;
+
+    public ModAnnotation(Type asmType, ModAnnotation parent) {
+        this(parent.type, asmType, parent.member);
     }
+
     @Override
-    public String toString()
-    {
+    public String toString() {
         return MoreObjects.toStringHelper("Annotation")
                 .add("type",type)
                 .add("name",asmType.getClassName())
@@ -74,52 +51,45 @@ public class ModAnnotation
                 .toString();
     }
 
-    public ElementType getType()
-    {
+    public ElementType getType() {
         return type;
     }
-    public Type getASMType()
-    {
+
+    public Type getASMType() {
         return asmType;
     }
-    public String getMember()
-    {
+
+    public String getMember() {
         return member;
     }
-    public Map<String, Object> getValues()
-    {
+
+    public Map<String, Object> getValues() {
         return values;
     }
-    public void addArray(String name)
-    {
-        this.arrayList = Lists.newArrayList();
+
+    public void addArray(String name) {
+        this.arrayList = new ArrayList<>();
         this.arrayName = name;
     }
-    public void addProperty(String key, Object value)
-    {
+
+    public void addProperty(String key, Object value) {
         if (this.arrayList != null)
-        {
             arrayList.add(value);
-        }
         else
-        {
             values.put(key, value);
-        }
     }
 
-    public void addEnumProperty(String key, String enumName, String value)
-    {
-        addProperty(key, new EnumHolder(enumName, value));
+    public void addEnumProperty(String key, String enumName, String value) {
+        addProperty(key, new EnumData(Type.getType(enumName), value));
     }
 
-    public void endArray()
-    {
+    public void endArray() {
         values.put(arrayName, arrayList);
         arrayList = null;
     }
-    public ModAnnotation addChildAnnotation(String name, String desc)
-    {
-        ModAnnotation child = new ModAnnotation(Type.getType(desc), this);
+
+    public ModAnnotation addChildAnnotation(String name, String desc) {
+        var child = new ModAnnotation(Type.getType(desc), this);
         addProperty(name, child.getValues());
         return child;
     }

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

@@ -1,67 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import org.objectweb.asm.AnnotationVisitor;
-import org.objectweb.asm.Opcodes;
-
-import java.util.LinkedList;
-
-public class ModAnnotationVisitor extends AnnotationVisitor {
-    private final ModAnnotation annotation;
-    private LinkedList<ModAnnotation> annotations;
-    private boolean array;
-    private boolean isSubAnnotation;
-
-    public ModAnnotationVisitor(LinkedList<ModAnnotation> annotations, ModAnnotation annotation) {
-        super(Opcodes.ASM9);
-        this.annotations = annotations;
-        this.annotation = annotation;
-    }
-
-    public ModAnnotationVisitor(LinkedList<ModAnnotation> annotations, ModAnnotation annotation, String name) {
-        this(annotations, annotation);
-        this.array = true;
-        annotation.addArray(name);
-    }
-
-    public ModAnnotationVisitor(LinkedList<ModAnnotation> annotations, ModAnnotation annotation, boolean isSubAnnotation) {
-        this(annotations, annotation);
-        this.isSubAnnotation = true;
-    }
-
-    @Override
-    public void visit(String key, Object value) {
-        annotation.addProperty(key, value);
-    }
-
-    @Override
-    public void visitEnum(String name, String desc, String value) {
-        annotation.addEnumProperty(name, desc, value);
-    }
-
-    @Override
-    public AnnotationVisitor visitArray(String name) {
-        return new ModAnnotationVisitor(annotations, annotation, name);
-    }
-
-    @Override
-    public AnnotationVisitor visitAnnotation(String name, String desc) {
-        var ma = annotations.getFirst();
-        var childAnnotation = ma.addChildAnnotation(name, desc);
-        annotations.addFirst(childAnnotation);
-        return new ModAnnotationVisitor(annotations, childAnnotation, true);
-    }
-
-    @Override
-    public void visitEnd() {
-        if (array)
-            annotation.endArray();
-
-        if (isSubAnnotation)
-            annotations.addLast(annotations.removeFirst());
-    }
-}

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

@@ -6,6 +6,8 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import net.minecraftforge.forgespi.language.ModFileScanData;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.objectweb.asm.AnnotationVisitor;
 import org.objectweb.asm.ClassVisitor;
 import org.objectweb.asm.FieldVisitor;
@@ -19,13 +21,14 @@ import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-public class ModClassVisitor extends ClassVisitor {
+@ApiStatus.Internal
+class ModClassVisitor extends ClassVisitor {
     private Type asmType;
     private Type asmSuperType;
     private Set<Type> interfaces;
     private final LinkedList<ModAnnotation> annotations = new LinkedList<>();
 
-    public ModClassVisitor() {
+    ModClassVisitor() {
         super(Opcodes.ASM9);
     }
 
@@ -38,19 +41,33 @@ public class ModClassVisitor extends ClassVisitor {
 
     @Override
     public AnnotationVisitor visitAnnotation(final String annotationName, final boolean runtimeVisible) {
-        ModAnnotation ann = new ModAnnotation(ElementType.TYPE, Type.getType(annotationName), this.asmType.getClassName());
+        var ann = new ModAnnotation(ElementType.TYPE, Type.getType(annotationName), this.asmType.getClassName());
         annotations.addFirst(ann);
-        return new ModAnnotationVisitor(annotations, ann);
+        return new ModAnnotationVisitor(ann);
     }
 
     @Override
     public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
-        return new ModFieldVisitor(name, annotations);
+        return new FieldVisitor(Opcodes.ASM9) {
+            @Override
+            public AnnotationVisitor visitAnnotation(String annotationName, boolean runtimeVisible) {
+                var ann = new ModAnnotation(ElementType.FIELD, Type.getType(annotationName), name);
+                annotations.addFirst(ann);
+                return new ModAnnotationVisitor(ann);
+            }
+        };
     }
 
     @Override
     public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
-        return new ModMethodVisitor(name, desc, annotations);
+        return new MethodVisitor(Opcodes.ASM9) {
+            @Override
+            public AnnotationVisitor visitAnnotation(String annotationName, boolean runtimeVisible) {
+                ModAnnotation ann = new ModAnnotation(ElementType.METHOD, Type.getType(annotationName), name + desc);
+                annotations.addFirst(ann);
+                return new ModAnnotationVisitor(ann);
+            }
+        };
     }
 
     public void buildData(final Set<ModFileScanData.ClassData> classes, final Set<ModFileScanData.AnnotationData> baked) {
@@ -60,4 +77,58 @@ public class ModClassVisitor extends ClassVisitor {
             baked.add(ModAnnotation.fromModAnnotation(this.asmType, a));
         }
     }
+
+    private class ModAnnotationVisitor extends AnnotationVisitor {
+        private final ModAnnotation annotation;
+        private boolean array;
+        private boolean isSubAnnotation;
+
+        public ModAnnotationVisitor(ModAnnotation annotation) {
+            super(Opcodes.ASM9);
+            this.annotation = annotation;
+        }
+
+        public ModAnnotationVisitor(ModAnnotation annotation, String name) {
+            this(annotation);
+            this.array = true;
+            annotation.addArray(name);
+        }
+
+        public ModAnnotationVisitor(ModAnnotation annotation, boolean isSubAnnotation) {
+            this(annotation);
+            this.isSubAnnotation = true;
+        }
+
+        @Override
+        public void visit(String key, Object value) {
+            annotation.addProperty(key, value);
+        }
+
+        @Override
+        public void visitEnum(String name, String desc, String value) {
+            annotation.addEnumProperty(name, desc, value);
+        }
+
+        @Override
+        public AnnotationVisitor visitArray(String name) {
+            return new ModAnnotationVisitor(annotation, name);
+        }
+
+        @Override
+        public AnnotationVisitor visitAnnotation(String name, String desc) {
+            var ma = annotations.getFirst();
+            var childAnnotation = ma.addChildAnnotation(name, desc);
+            annotations.addFirst(childAnnotation);
+            return new ModAnnotationVisitor(childAnnotation, true);
+        }
+
+        @Override
+        public void visitEnd() {
+            if (array)
+                annotation.endArray();
+
+            if (isSubAnnotation)
+                annotations.addLast(annotations.removeFirst());
+        }
+    }
 }

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

@@ -21,6 +21,8 @@ import net.minecraftforge.forgespi.language.IModFileInfo;
 import net.minecraftforge.forgespi.locating.IDependencyLocator;
 import net.minecraftforge.forgespi.locating.IModFile;
 import net.minecraftforge.forgespi.locating.IModLocator;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.slf4j.Logger;
 
 import java.util.ArrayList;
@@ -30,6 +32,7 @@ import java.util.Objects;
 import java.util.ServiceLoader;
 import java.util.stream.Collectors;
 
+@ApiStatus.Internal
 public class ModDiscoverer {
     private static final Logger LOGGER = LogUtils.getLogger();
     private final ServiceLoader<IModLocator> modLocators;

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

@@ -1,35 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import org.objectweb.asm.AnnotationVisitor;
-import org.objectweb.asm.FieldVisitor;
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.Type;
-
-import java.lang.annotation.ElementType;
-import java.util.LinkedList;
-
-public class ModFieldVisitor extends FieldVisitor
-{
-    private final LinkedList<ModAnnotation> annotations;
-    private final String fieldName;
-
-    public ModFieldVisitor(String name, final LinkedList<ModAnnotation> annotations)
-    {
-        super(Opcodes.ASM9);
-        this.fieldName = name;
-        this.annotations = annotations;
-    }
-    
-    @Override
-    public AnnotationVisitor visitAnnotation(String annotationName, boolean runtimeVisible)
-    {
-        ModAnnotation ann = new ModAnnotation(ElementType.FIELD, Type.getType(annotationName), fieldName);
-        annotations.addFirst(ann);
-        return new ModAnnotationVisitor(annotations, ann);
-    }
-}

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

@@ -23,6 +23,8 @@ import org.slf4j.Logger;
 
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
@@ -35,16 +37,7 @@ import java.util.jar.Attributes;
 import java.util.jar.Manifest;
 
 public class ModFile implements IModFile {
-    // Mods either must have a mods.toml or a manifest. We can no longer just put any jar on the classpath.
-    @Deprecated(forRemoval = true, since = "1.18")
-    public static final Manifest DEFAULTMANIFEST;
     private static final Logger LOGGER = LogUtils.getLogger();
-
-    static {
-        DEFAULTMANIFEST = new Manifest();
-        DEFAULTMANIFEST.getMainAttributes().putValue("FMLModType", "MOD");
-    }
-
     private final String jarVersion;
     private final ModFileFactory.ModFileInfoParser parser;
     private Map<String, Object> fileProperties;
@@ -176,9 +169,13 @@ public class ModFile implements IModFile {
     }
 
     public void identifyLanguage() {
-        this.loaders = this.modFileInfo.requiredLanguageLoaders().stream()
-                .map(spec-> FMLLoader.getLanguageLoadingProvider().findLanguage(this, spec.languageName(), spec.acceptedVersions()))
-                .toList();
+        var lst = new ArrayList<IModLanguageProvider>(this.modFileInfo.requiredLanguageLoaders().size());
+        var services = FMLLoader.getLanguageLoadingProvider();
+        for (var spec : this.modFileInfo.requiredLanguageLoaders()) {
+            var service = services.findLanguage(this, spec.languageName(), spec.acceptedVersions());
+            lst.add(service);
+        }
+        this.loaders = Collections.unmodifiableList(lst);
     }
 
     @Override

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

@@ -15,6 +15,7 @@ import net.minecraftforge.forgespi.locating.ForgeFeature;
 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 org.slf4j.Logger;
 
 import java.net.URL;
@@ -24,8 +25,8 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.regex.Pattern;
 
-public class ModInfo implements IModInfo, IConfigurable
-{
+@ApiStatus.Internal
+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}$");

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

@@ -6,48 +6,17 @@
 package net.minecraftforge.fml.loading.moddiscovery;
 
 import cpw.mods.jarhandling.JarMetadata;
-import cpw.mods.jarhandling.SecureJar;
 import net.minecraftforge.forgespi.locating.IModFile;
-import net.minecraftforge.forgespi.locating.IModLocator;
-
 import java.lang.module.ModuleDescriptor;
-import java.nio.file.Path;
 import java.util.Objects;
-import java.util.Optional;
-import java.util.function.BiPredicate;
-import java.util.function.Function;
-import java.util.function.Predicate;
 
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
 public final class ModJarMetadata implements JarMetadata {
     private IModFile modFile;
     private ModuleDescriptor descriptor;
 
-    // TODO: Remove helper functions to cleanup api
-    @Deprecated(forRemoval = true, since="1.18")
-    static Optional<IModFile> buildFile(IModLocator locator, Predicate<SecureJar> jarTest, BiPredicate<String, String> filter, Path... files) {
-        return buildFile(j->new ModFile(j, locator, ModFileParser::modsTomlParser), jarTest, filter, files);
-    }
-
-    // TODO: Remove helper functions to cleanup api
-    @Deprecated(forRemoval = true, since="1.18")
-    static IModFile buildFile(IModLocator locator, Path... files) {
-        return buildFile(locator, j->true, null, files).orElseThrow(()->new IllegalArgumentException("Failed to find valid JAR file"));
-    }
-
-    // TODO: Remove helper functions to cleanup api
-    @Deprecated(forRemoval = true, since="1.18")
-    static Optional<IModFile> buildFile(Function<SecureJar, IModFile> mfConstructor, Predicate<SecureJar> jarTest, BiPredicate<String, String> filter, Path... files) {
-        var mjm = new ModJarMetadata();
-        var sj = SecureJar.from(()->ModFile.DEFAULTMANIFEST, j->mjm, filter, files);
-        if (jarTest.test(sj)) {
-            var mf = mfConstructor.apply(sj);
-            mjm.setModFile(mf);
-            return Optional.of(mf);
-        } else {
-            return Optional.empty();
-        }
-    }
-
     ModJarMetadata() {
     }
 

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

@@ -1,93 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import com.mojang.logging.LogUtils;
-import net.minecraftforge.fml.loading.FMLPaths;
-import net.minecraftforge.fml.loading.LogMarkers;
-import net.minecraftforge.fml.loading.MavenCoordinateResolver;
-import org.apache.commons.lang3.tuple.Pair;
-import org.slf4j.Logger;
-
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.List;
-import java.util.Objects;
-import java.util.stream.Collectors;
-
-public class ModListHandler {
-    private static final Logger LOGGER = LogUtils.getLogger();
-    /**
-     * Reads the modList paths specified, and searches each maven root for mods matching. Returns a list of mods
-     * found.
-     *
-     * @param modListPaths Paths to search for mod file lists
-     * @param mavenRootPaths Roots to look for mods listed
-     * @return list of found mod coordinates
-     */
-    public static List<String> processModLists(final List<String> modListPaths, final List<Path> mavenRootPaths) {
-        final List<String> modCoordinates = modListPaths.stream().map(ModListHandler::transformPathToList).
-                flatMap(Collection::stream).
-                collect(Collectors.toList());
-
-        List<Pair<Path,String>> localModCoords = modCoordinates.stream().map(mc->Pair.of(MavenCoordinateResolver.get(mc), mc)).collect(Collectors.toList());
-        final List<Pair<Path, String>> foundCoordinates = localModCoords.stream().
-                map(mc -> mavenRootPaths.stream().
-                        map(root -> Pair.of(root.resolve(mc.getLeft()), mc.getRight())).
-                        filter(path -> Files.exists(path.getLeft())).
-                        findFirst().
-                        orElseGet(()->{
-                            LOGGER.warn(LogMarkers.CORE, "Failed to find coordinate {}", mc);
-                            return null;
-                })).
-                filter(Objects::nonNull).
-                collect(Collectors.toList());
-
-        final List<String> found = foundCoordinates.stream().map(Pair::getRight).collect(Collectors.toList());
-        LOGGER.debug(LogMarkers.CORE, "Found mod coordinates from lists: {}", found);
-        return found;
-    }
-
-    private static List<String> transformPathToList(final String path) {
-        LOGGER.debug(LogMarkers.CORE, "Reading mod list {}", path);
-        Path filePath = FMLPaths.GAMEDIR.get().resolve(path);
-        if (!Files.exists(filePath)) {
-            LOGGER.warn(LogMarkers.CORE, "Failed to find modlist file at {}", filePath);
-            return Collections.emptyList();
-        }
-
-        String extension = fileExtension(filePath);
-        if (Objects.equals("list",extension)) {
-            return readListFile(filePath).stream().filter(s -> !s.isEmpty()).collect(Collectors.toList());
-        } else {
-            LOGGER.warn(LogMarkers.CORE, "Failed to read unknown file list type {} for file {}", extension, filePath);
-        }
-        return Collections.emptyList();
-    }
-
-    private static String fileExtension(final Path path) {
-        String fileName = path.getFileName().toString();
-        int idx = fileName.lastIndexOf('.');
-        return idx > -1 ? fileName.substring(idx+1) : "";
-    }
-
-    /**
-     * Simple list file, ending in ".list" with one mod coordinate per line
-     * @param filePath path
-     * @return list
-     */
-    private static List<String> readListFile(final Path filePath) {
-        try {
-            return Files.readAllLines(filePath);
-        } catch (IOException e) {
-            LOGGER.warn(LogMarkers.CORE, "Failed to read file list {}", filePath, e);
-            return Collections.emptyList();
-        }
-    }
-}

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

@@ -1,38 +0,0 @@
-/*
- * Copyright (c) Forge Development LLC and contributors
- * SPDX-License-Identifier: LGPL-2.1-only
- */
-
-package net.minecraftforge.fml.loading.moddiscovery;
-
-import org.objectweb.asm.AnnotationVisitor;
-import org.objectweb.asm.MethodVisitor;
-import org.objectweb.asm.Opcodes;
-import org.objectweb.asm.Type;
-
-import java.lang.annotation.ElementType;
-import java.util.LinkedList;
-
-public class ModMethodVisitor extends MethodVisitor {
-
-    private final LinkedList<ModAnnotation> annotations;
-    private String methodName;
-    private String methodDescriptor;
-
-    public ModMethodVisitor(String name, String desc, final LinkedList<ModAnnotation> annotations)
-    {
-        super(Opcodes.ASM9);
-        this.methodName = name;
-        this.methodDescriptor = desc;
-        this.annotations = annotations;
-    }
-
-    @Override
-    public AnnotationVisitor visitAnnotation(String annotationName, boolean runtimeVisible)
-    {
-        ModAnnotation ann = new ModAnnotation(ElementType.METHOD, Type.getType(annotationName), methodName+methodDescriptor);
-        annotations.addFirst(ann);
-        return new ModAnnotationVisitor(annotations, ann);
-    }
-
-}

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

@@ -9,33 +9,28 @@ import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.FMLPaths;
 import net.minecraftforge.fml.loading.LogMarkers;
 import net.minecraftforge.fml.loading.ModDirTransformerDiscoverer;
-import net.minecraftforge.fml.loading.StringUtils;
+import net.minecraftforge.forgespi.locating.IModLocator;
+
 import org.slf4j.Logger;
 
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Comparator;
-import java.util.Map;
-import java.util.stream.Stream;
-
-import static cpw.mods.modlauncher.api.LamdbaExceptionUtils.uncheck;
+import java.util.List;
+import java.util.Locale;
 
 /**
  * Support loading mods located in JAR files in the mods folder
  */
-public class ModsFolderLocator extends AbstractJarFileModLocator
-{
+public class ModsFolderLocator extends AbstractModProvider implements IModLocator {
     private static final String SUFFIX = ".jar";
     private static final Logger LOGGER = LogUtils.getLogger();
     private final Path modFolder;
     private final String customName;
 
     public ModsFolderLocator() {
-        this(FMLPaths.MODSDIR.get());
-    }
-
-    ModsFolderLocator(Path modFolder) {
-        this(modFolder, "mods folder");
+        this(FMLPaths.MODSDIR.get(), "mods folder");
     }
 
     ModsFolderLocator(Path modFolder, String name) {
@@ -44,13 +39,22 @@ public class ModsFolderLocator extends AbstractJarFileModLocator
     }
 
     @Override
-    public Stream<Path> scanCandidates() {
-        LOGGER.debug(LogMarkers.SCAN,"Scanning mods dir {} for mods", this.modFolder);
+    public List<IModLocator.ModFileOrException> scanMods() {
+        LOGGER.debug(LogMarkers.SCAN, "Scanning mods dir {} for mods", this.modFolder);
         var excluded = ModDirTransformerDiscoverer.allExcluded();
+        try (var stream = Files.list(this.modFolder)) {
+            return stream.filter(path -> !excluded.contains(path) && path.getFileName().toString().toLowerCase(Locale.ROOT).endsWith(SUFFIX))
+                .sorted(Comparator.comparing(path -> path.getFileName().toString().toLowerCase(Locale.ROOT)))
+                .map(this::createMod)
+                .toList();
+        } catch (IOException e) {
+            return sneak(e);
+        }
+    }
 
-        return uncheck(()-> Files.list(this.modFolder))
-                .filter(p-> !excluded.contains(p) && StringUtils.toLowerCase(p.getFileName().toString()).endsWith(SUFFIX))
-                .sorted(Comparator.comparing(path-> StringUtils.toLowerCase(path.getFileName().toString())));
+    @SuppressWarnings("unchecked")
+    private static <E extends Throwable, R> R sneak(Throwable e) throws E {
+        throw (E)e;
     }
 
     @Override
@@ -62,8 +66,4 @@ public class ModsFolderLocator extends AbstractJarFileModLocator
     public String toString() {
         return "{"+customName+" locator at "+this.modFolder+"}";
     }
-
-    @Override
-    public void initArguments(final Map<String, ?> arguments) {
-    }
 }

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

@@ -15,9 +15,12 @@ import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
+import org.jetbrains.annotations.ApiStatus;
+
 import static java.util.Arrays.asList;
 
-public class NightConfigWrapper implements IConfigurable {
+@ApiStatus.Internal
+class NightConfigWrapper implements IConfigurable {
     private final UnmodifiableConfig config;
     private IModFileInfo file;
 

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

@@ -9,6 +9,8 @@ import com.mojang.logging.LogUtils;
 import net.minecraftforge.fml.loading.LogMarkers;
 import net.minecraftforge.forgespi.language.IModLanguageProvider;
 import net.minecraftforge.forgespi.language.ModFileScanData;
+
+import org.jetbrains.annotations.ApiStatus;
 import org.objectweb.asm.ClassReader;
 import org.slf4j.Logger;
 
@@ -18,7 +20,8 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.List;
 
-public class Scanner {
+@ApiStatus.Internal
+class Scanner {
     private static final Logger LOGGER = LogUtils.getLogger();
     private final ModFile fileToScan;
 

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

@@ -7,15 +7,9 @@ package net.minecraftforge.fml.loading.targets;
 
 import cpw.mods.jarhandling.SecureJar;
 import cpw.mods.modlauncher.api.ServiceRunner;
-import net.minecraftforge.fml.loading.LogMarkers;
 import java.io.File;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
 import java.util.function.BiPredicate;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -63,55 +57,6 @@ abstract class CommonDevLaunchHandler extends CommonLaunchHandler {
         return args.getArguments();
     }
 
-    protected List<Path> getLibraries(String[] classpath) {
-        // TODO: These should all be FMLModType: LIBRARY, find them that way?
-        // Or at the very least include version info
-        var fmlcore = findJarOnClasspath(classpath, "fmlcore");
-        var javafmllang = findJarOnClasspath(classpath, "javafmllanguage");
-        var lowcodelang = findJarOnClasspath(classpath, "lowcodelanguage");
-        var mclang = findJarOnClasspath(classpath, "mclanguage");
-        return List.of(fmlcore, javafmllang, lowcodelang, mclang);
-    }
-
-    protected BiPredicate<String, String> getMcFilter(Path extra, List<Path> minecraft) {
-        var packages = getPackages(); // Pulled out so it is passed to the lambda as value
-        var extraPath = extra.toString().replace('\\', '/');
-
-        // We serve everything, except for things in the forge packages.
-        BiPredicate<String, String> mcFilter = (path, base) -> {
-            if (base.equals(extraPath) ||
-                path.endsWith("/")) return true;
-            for (var pkg : packages)
-                if (path.startsWith(pkg)) return false;
-            return true;
-        };
-
-        return mcFilter;
-    }
-
-    protected Path getForgeMod(List<Path> minecraft) {
-        var packages = getPackages(); // Pulled out so it is passed to the lambda as value
-        // We need to separate out our resources/code so that we can show up as a different data pack.
-        var modJar = SecureJar.from((path, base) -> {
-            if (!path.endsWith(".class")) return true;
-            for (var pkg : packages)
-                if (path.startsWith(pkg)) return true;
-            return false;
-        }, minecraft.stream().distinct().toArray(Path[]::new));
-
-        //modJar.getPackages().stream().sorted().forEach(System.out::println);
-        return modJar.getRootPath();
-    }
-
-    private static String[] getPackages() {
-        return new String[] {
-            "net/minecraftforge/",
-            "META-INF/services/",
-            "META-INF/coremods.json",
-            "META-INF/mods.toml"
-        };
-    }
-
     private static String getRandomNumbers(int length) {
         // Generate a time-based random number, to mimic how n.m.client.Main works
         return Long.toString(System.nanoTime() % (int) Math.pow(10, length));
@@ -122,48 +67,11 @@ abstract class CommonDevLaunchHandler extends CommonLaunchHandler {
         return super.makeService(preLaunch(arguments, gameLayer), gameLayer);
     }
 
-    // TODO: Get rid of this string based classpath crap when I re-write mod loader
-    protected static Map<String, List<Path>> getModClasses() {
-        var modClasses = Optional.ofNullable(System.getenv("MOD_CLASSES")).orElse("");
-        LOGGER.debug(LogMarkers.CORE, "Got mod coordinates {} from env", modClasses);
-
-        /*
-         * So MOD_CLASSES at the end of the day is a Map<ModId, List<Path>> but because we want to shove that into a single string.
-         * And pass it in as an environment variable.. instead od using json, or a file path, or anything sane, cpw did hacky string stuff
-         * Basically what we want to do is split the string by File.pathSeperator to get each key-value pair.
-         * Then we find the magic string "%%" and split on that. Using the first half as the mod id and the second as the path.
-         * BUT the modID is optional, and if not specified {why wouldn't it be?} it uses "defaultmodid"
-         * Anyways, it was stream hell, but now it's simpler to debug/understand.
-         */
-        Map<String, List<Path>> ret = new HashMap<>();
-        var entries = modClasses.split(File.pathSeparator);
-        for (var entry : entries) {
-            var modid = "defaultmodid";
-            var path = entry;
-
-            int idx = entry.indexOf("%%");
-            if (idx != -1) {
-                modid = entry.substring(0, idx);
-                path = entry.substring(idx + 2);
-            }
-
-            var p = Paths.get(path);
-            var lst = ret.computeIfAbsent(modid, k -> new ArrayList<>());
-            if (!lst.contains(p))
-                lst.add(p);
-        }
-
-        LOGGER.debug(LogMarkers.CORE, "Found supplied mod coordinates:");
-        ret.forEach((k, v) -> {
-            if (v.size() == 1)
-                LOGGER.debug(LogMarkers.CORE, "\t{}: {}", k, v.get(0));
-            else {
-                LOGGER.debug(LogMarkers.CORE, "\t{}:", k);
-                v.forEach(e -> LOGGER.debug("\t\t{}", e));
-            }
-        });
-
-        return ret;
+    protected static String[] findClassPath() {
+        var classpath = System.getProperty("legacyClassPath");
+        if (classpath == null)
+            classpath = System.getProperty("java.class.path");
+        return classpath.split(File.pathSeparator);
     }
 
     protected static Path findJarOnClasspath(String[] classpath, String match) {
@@ -181,8 +89,49 @@ abstract class CommonDevLaunchHandler extends CommonLaunchHandler {
         }
 
         if (ret == null)
-            new IllegalStateException("Could not find " + match + " in classpath");
+            throw new IllegalStateException("Could not find " + match + " in classpath");
 
         return Paths.get(ret);
     }
+
+    // TODO: [Forge][UFS][DEV] Make Forge and MC seperate sources at dev time so we don't have to filter
+    protected static Path getMinecraftOnly(Path extra, Path forge) {
+        var packages = getPackages(); // Pulled out so it is passed to the lambda as value
+        var extraPath = extra.toString().replace('\\', '/');
+
+        // We serve everything, except for things in the forge packages.
+        BiPredicate<String, String> mcFilter = (path, base) -> {
+            if (base.equals(extraPath) ||
+                    path.endsWith("/")) return true;
+            for (var pkg : packages)
+                if (path.startsWith(pkg)) return false;
+            return true;
+        };
+        var fs = UnionHelper.newFileSystem(mcFilter, new Path[] { forge, extra });
+        return fs.getRootDirectories().iterator().next();
+    }
+
+    // TODO: [Forge][UFS][DEV] Make Forge and MC seperate sources at dev time so we don't have to filter
+    protected static Path getForgeOnly(Path forge) {
+        var packages = getPackages(); // Pulled out so it is passed to the lambda as value
+        // We need to separate out our resources/code so that we can show up as a different data pack.
+        var modJar = SecureJar.from((path, base) -> {
+            if (!path.endsWith(".class")) return true;
+            for (var pkg : packages)
+                if (path.startsWith(pkg)) return true;
+            return false;
+        }, new Path[] { forge });
+
+        //modJar.getPackages().stream().sorted().forEach(System.out::println);
+        return modJar.getRootPath();
+    }
+
+    private static String[] getPackages() {
+        return new String[] {
+            "net/minecraftforge/",
+            "META-INF/services/",
+            "META-INF/coremods.json",
+            "META-INF/mods.toml"
+        };
+    }
 }

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

@@ -20,7 +20,6 @@ import java.io.IOException;
 import java.net.URI;
 import java.nio.file.Path;
 import java.util.List;
-import java.util.function.BiPredicate;
 
 /**
  * This is required by FMLLoader because ILaunchHandlerService doesn't have the context we need.
@@ -29,16 +28,9 @@ import java.util.function.BiPredicate;
  * So until that happens, guess this is public api.
  */
 public abstract class CommonLaunchHandler implements ILaunchHandlerService {
-    public record LocatedPaths(
-        List<Path> minecraftPaths,
-        BiPredicate<String, String> minecraftFilter,
-        List<List<Path>> otherModPaths,
-        List<Path> otherArtifacts
-    ) {}
-
     protected static final Logger LOGGER = LogUtils.getLogger();
 
-    private final LaunchType type;
+    protected final LaunchType type;
     private final String prefix;
 
     protected CommonLaunchHandler(LaunchType type, String prefix) {
@@ -52,7 +44,7 @@ public abstract class CommonLaunchHandler implements ILaunchHandlerService {
     public boolean isProduction() { return false; }
     public abstract String getNaming();
 
-    public abstract LocatedPaths getMinecraftPaths();
+    public abstract List<Path> getMinecraftPaths();
 
     @Override
     public void configureTransformationClassLoader(final ITransformingClassLoaderBuilder builder) {
@@ -60,7 +52,7 @@ public abstract class CommonLaunchHandler implements ILaunchHandlerService {
 
     protected String[] preLaunch(String[] arguments, ModuleLayer layer) {
         URI uri;
-        try (var reader = layer.configuration().findModule("fmlloader").orElseThrow().reference().open()) {
+        try (var reader = layer.configuration().findModule("net.minecraftforge.fmlloader").orElseThrow().reference().open()) {
             uri = reader.find("log4j2.xml").orElseThrow();
         } catch (IOException e) {
             throw new RuntimeException(e);
@@ -89,7 +81,7 @@ public abstract class CommonLaunchHandler implements ILaunchHandlerService {
     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).orElseThrow();
+        var mod = layer.findModule(module).orElse(null);
         if (mod == null) throw new IllegalStateException("Could not find module " + module);
         var cls = Class.forName(mod, target);
         if (cls == null) throw new IllegalStateException("Could not find class " + target + " in module " + module);

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

@@ -4,269 +4,52 @@
  */
 
 package net.minecraftforge.fml.loading.targets;
-import java.io.File;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
+import java.net.URI;
 import java.nio.file.Path;
-import java.nio.file.StandardOpenOption;
-import java.nio.file.spi.FileSystemProvider;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedHashSet;
+import java.nio.file.Paths;
 import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
-import java.util.stream.Stream;
-
 import org.jetbrains.annotations.ApiStatus;
-import org.objectweb.asm.AnnotationVisitor;
-import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.ClassVisitor;
-import org.objectweb.asm.Opcodes;
-import com.electronwill.nightconfig.core.Config;
-import com.electronwill.nightconfig.core.file.FileNotFoundAction;
-import com.electronwill.nightconfig.core.io.WritingMode;
-import com.electronwill.nightconfig.toml.TomlParser;
-import com.electronwill.nightconfig.toml.TomlWriter;
-import com.google.common.jimfs.Jimfs;
-
-import cpw.mods.niofs.union.UnionFileSystemProvider;
 
 @ApiStatus.Internal
 abstract class ForgeDevLaunchHandler extends CommonDevLaunchHandler {
-    private static final String MODS_TOML = "META-INF/mods.toml";
-    private static final String PACK_META = "pack.mcmeta";
-    private static final UnionFileSystemProvider UFSP = (UnionFileSystemProvider)FileSystemProvider.installedProviders().stream().filter(fsp->fsp.getScheme().equals("union")).findFirst().orElseThrow(()->new IllegalStateException("Couldn't find UnionFileSystemProvider"));
-
     private ForgeDevLaunchHandler(LaunchType type) {
         super(type, "forge_dev_");
     }
 
     @Override
-    public LocatedPaths getMinecraftPaths() {
-        // Our exploded directories in development include all mods and minecraft itself.
-        var mods = getModClasses();
+    public List<Path> getMinecraftPaths() {
 
         // The extra jar is on the classpath, so try and pull it out of the legacy classpath
-        var legacyCP = Objects.requireNonNull(System.getProperty("legacyClassPath"), "Missing legacyClassPath, cannot find client-extra").split(File.pathSeparator);
+        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");
 
+        // If both Forge and MC are in the same folder, then we are in intellij or gradle
+        // So we have to create a filtered jar
+        if (!forge.equals(minecraft))
+            return List.of(minecraft, extra);
 
-        // Minecraft is extra jar {resources} + our exploded directories in dev
-        var minecraft = mods.remove("minecraft");
-        if (minecraft == null)
-            throw new IllegalStateException("Could not find 'minecraft' mod paths.");
-        var mcFilter = getMcFilter(extra, minecraft);
-
-        // The MC code/Patcher edits are in exploded directories
-        var modstream = Stream.<List<Path>>builder();
-        var forge = this.getForgeMod(minecraft);
-        modstream.add(List.of(forge));
-
-        // Explode our test mods into a framework that treats them all as separate jars.
-        var tests = mods.remove("tests");
-        if (tests != null)
-            explodeTestMods(tests).forEach(modstream::add);
-
-        mods.values().forEach(modstream::add);
-
-        return new LocatedPaths(
-            Stream.concat(minecraft.stream(), List.of(extra).stream()).toList(),
-            mcFilter,
-            modstream.build().toList(),
-            getLibraries(legacyCP)
-        );
+        var filtered = CommonDevLaunchHandler.getMinecraftOnly(extra, minecraft);
+        return List.of(filtered);
     }
 
-    private List<List<Path>> explodeTestMods(List<Path> paths) {
-        var mod = new ArrayList<List<Path>>();
-        var memory = Jimfs.newFileSystem();
+    static Path getPathFromResource(String resource) {
+        var cl = ForgeDevLaunchHandler.class.getClassLoader();
+        var url = cl.getResource(resource);
+        if (url == null)
+            throw new IllegalStateException("Could not find " + resource + " in classloader " + cl);
 
-        // First lets find all class files, that have the @Mod annotation and map packages to modids.
-        var packages = findTestModPackages(paths);
-        for (var entry : packages.entrySet()) {
-            var pkg = entry.getKey();
-            var modids = entry.getValue();
-
-            var resourcePaths = new LinkedHashSet<Path>();
-            // Jump down into the package for resources
-            paths.stream()
-                .<Path>mapMulti((p, c) -> modids.forEach(id -> c.accept(p.resolve(id))))
-                .filter(Files::exists).forEach(resourcePaths::add);
-
-            var root = memory.getPath(modids.iterator().next()); // use the first modid as our root
-            buildModsToml(resourcePaths, modids, root);
-            buildPackMeta(resourcePaths, root);
-
-            if (Files.exists(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 = UFSP.newFileSystem(
-                (path, base) -> {
-                    if (path.endsWith("/")) {
-                        if (path.startsWith("/"))
-                            path = path.substring(1);
-                        return pkg.startsWith(path) || path.startsWith(pkg);
-                    }
-                    return path.endsWith(".class") && path.startsWith(pkg);
-                }, paths.toArray(Path[]::new));
-            // 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 = UFSP.newFileSystem((path, base) -> !path.endsWith(".class"), resourcePaths.toArray(Path[]::new));
-
-            mod.add(List.of(classes.getRoot(), resources.getRoot()));
+        var str = url.toString();
+        int len = resource.length();
+        if ("jar".equalsIgnoreCase(url.getProtocol())) {
+            str = url.getFile();
+            len += 2;
         }
-
-        return mod;
-    }
-
-    // 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 Map<String, Set<String>> findTestModPackages(List<Path> paths) {
-        var mods = new HashMap<String, Set<String>>();
-        for (var path : paths) {
-            try (var files = Files.walk(path)) {
-                var classes = files
-                    .filter(Files::isRegularFile)
-                    .filter(p -> p.getFileName().toString().endsWith(".class"))
-                    .toList();
-
-                for (var cls : classes) {
-                    try (var is = Files.newInputStream(cls)) {
-                        var reader = new ClassReader(is);
-                        reader.accept(new ClassVisitor(Opcodes.ASM9) {
-                            private String clsName;
-                            @Override
-                            public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
-                                this.clsName = name;
-                                super.visit(version, access, name, signature, superName, interfaces);
-                            }
-
-                            @Override
-                            public AnnotationVisitor visitAnnotation(String name, boolean runtime) {
-                                if (!"Lnet/minecraftforge/fml/common/Mod;".equals(name))
-                                    return super.visitAnnotation(name, runtime);
-
-                                return new AnnotationVisitor(Opcodes.ASM9) {
-                                    @Override
-                                    public void visit(String key, Object value) {
-                                        if ("value".equals(key)) {
-                                            int idx = clsName.lastIndexOf('/');
-                                            var pkg = clsName.substring(0, idx);
-                                            mods.computeIfAbsent(pkg, k -> new HashSet<>()).add((String)value);
-
-                                            idx = pkg.lastIndexOf('/');
-                                            while (idx != -1) {
-                                                pkg = pkg.substring(0, idx);
-                                                idx = pkg.lastIndexOf('/');
-                                                if (mods.containsKey(pkg))
-                                                    throw new IllegalStateException("Invalid ForgeDev test mod layout, conflicting packages: " + pkg + " for " + clsName);
-                                            }
-                                        }
-                                    }
-                                };
-                            }
-                        }, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
-                    }
-                }
-            } catch (IOException e) {
-                sneak(e);
-            }
-        }
-        return mods;
-    }
-
-    // Builds or update the mods.toml file for all @Mods in this package
-    private void buildModsToml(Set<Path> resources, Set<String> modids, Path root) {
-        var toml = resources.stream()
-            .map(p -> p.resolve(MODS_TOML))
-            .filter(Files::exists)
-            .findFirst()
-            .orElse(null);
-
-        Config cfg = null;
-
-        if (toml != null)
-            cfg = new TomlParser().parse(toml, FileNotFoundAction.READ_NOTHING);
-        else
-            cfg = Config.inMemory();
-
-        boolean modified = false;
-        var defaults = Map.of(
-            "modLoader", "javafml",
-            "loaderVersion", "[0,)",
-            "license", "Doesnt fucking matter"
-        );
-
-        for (var key : defaults.keySet()) {
-            if (!cfg.contains(key)) {
-                cfg.set(key, defaults.get(key));
-                modified = true;
-            }
-        }
-
-        var modlist = new ArrayList<Config>();
-        if (cfg.contains("mods")) {
-            @SuppressWarnings("unchecked")
-            var existing = ((List<Config>)cfg.get("mods"));
-            modlist.addAll(existing);
-        }
-
-        for (var modid : modids) {
-            if (!modlist.stream().anyMatch(c -> modid.equals(c.get("modId")))) {
-                modified = true;
-                var tmp = Config.inMemory();
-                tmp.set("modId", modid);
-                modlist.add(tmp);
-            }
-        }
-
-        cfg.set("mods", modlist);
-
-        if (modified) {
-            var target = root.resolve(MODS_TOML);
-            try {
-                Files.createDirectories(target.getParent());
-                new TomlWriter().write(cfg, target, WritingMode.REPLACE);
-            } catch (IOException e) {
-                throw new IllegalStateException("Failed to create in memory toml: " + target, e);
-            }
-        }
-    }
-
-    // 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 void buildPackMeta(Set<Path> paths, Path root) {
-        var existing = paths.stream()
-                .map(p -> p.resolve(PACK_META))
-                .filter(Files::exists)
-                .findFirst()
-                .orElse(null);
-
-        if (existing != null)
-            return;
-        var target = root.resolve(PACK_META);
-        try {
-            Files.createDirectories(target.getParent());
-            Files.writeString(target,
-            """
-            {
-                "pack": {
-                    "description": "doesn't matter",
-                    "pack_format": 18
-                 }
-            }
-            """, StandardCharsets.UTF_8, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE);
-        } catch (IOException e) {
-            throw new IllegalStateException("Failed to make in memory pack.mcmeta: " + target, e);
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    private static <E extends Throwable, R> R sneak(Throwable e) throws E {
-        throw (E)e;
+        str = str.substring(0, str.length() - len);
+        var path = Paths.get(URI.create(str));
+        return path;
     }
 
     public static class Client extends ForgeDevLaunchHandler {

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

@@ -0,0 +1,276 @@
+package net.minecraftforge.fml.loading.targets;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.util.ArrayList;
+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 org.jetbrains.annotations.ApiStatus;
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.Opcodes;
+
+import com.electronwill.nightconfig.core.Config;
+import com.electronwill.nightconfig.core.file.FileNotFoundAction;
+import com.electronwill.nightconfig.core.io.WritingMode;
+import com.electronwill.nightconfig.toml.TomlParser;
+import com.electronwill.nightconfig.toml.TomlWriter;
+import com.google.common.jimfs.Jimfs;
+
+import net.minecraftforge.fml.loading.FMLLoader;
+import net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider;
+import net.minecraftforge.forgespi.locating.IModLocator;
+
+@ApiStatus.Internal
+public class ForgeDevLocator extends AbstractModProvider implements IModLocator {
+    private static final String PACK_META = "pack.mcmeta";
+
+    @Override
+    public String name() {
+        return "forge_dev_locator";
+    }
+
+    @Override
+    public List<ModFileOrException> scanMods() {
+        var handler = FMLLoader.getLaunchHandler();
+
+        if (!(handler instanceof ForgeDevLaunchHandler))
+            return List.of();
+
+        var mods = getMods();
+        var ret = new ArrayList<ModFileOrException>();
+        for (var path : mods) {
+            var mod = createMod(path);
+            if (mod != null)
+                ret.add(mod);
+        }
+        return ret;
+    }
+
+    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");
+        if (minecraft.equals(forge)) {
+            // If both Forge and MC are in the same folder, then we are in intellij or gradle
+            // So we have to create a filtered jar
+            forge = CommonDevLaunchHandler.getForgeOnly(forge);
+        }
+        var ret = new ArrayList<Path>();
+        ret.add(forge);
+
+        var isTest = Boolean.getBoolean("forgedev.enableTestMods");
+        if (!isTest)
+            return ret;
+
+        var test = ForgeDevLaunchHandler.getPathFromResource("net/minecraftforge/test/BaseTestMod.class");
+        // Explode our test mods into a framework that treats them all as separate jars.
+        var tests = explodeTestMods(test);
+        ret.addAll(tests);
+
+        return ret;
+    }
+
+    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 modids = entry.getValue();
+
+            // Find resource directories for every mod in this group
+            var resourcePaths = new LinkedHashSet<Path>();
+            for (var modid : modids) {
+                var rsc = path.resolve(modid);
+                if (Files.exists(rsc))
+                    resourcePaths.add(rsc);
+            }
+
+            var root = memory.getPath(modids.iterator().next()); // use the first modid as our root
+            buildModsToml(resourcePaths, modids, root);
+            buildPackMeta(resourcePaths, root);
+
+            if (Files.exists(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(
+                (name, base) -> {
+                    if (name.endsWith("/")) {
+                        if (name.startsWith("/"))
+                            name = name.substring(1);
+                        return pkg.startsWith(name) || name.startsWith(pkg);
+                    }
+                    return name.endsWith(".class") && name.startsWith(pkg);
+                }, new Path[] { path }
+            );
+
+            // 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, new Path[] {
+                classes.getRootDirectories().iterator().next(),
+                resources.getRootDirectories().iterator().next()
+            });
+            mod.add(union.getRootDirectories().iterator().next());
+        }
+
+        return mod;
+    }
+
+    // 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 Map<String, Set<String>> findTestModPackages(Path path) {
+        var mods = new HashMap<String, Set<String>>();
+        try (var files = Files.walk(path)) {
+            var classes = files
+                .filter(Files::isRegularFile)
+                .filter(p -> p.getFileName().toString().endsWith(".class"))
+                .toList();
+
+            for (var cls : classes) {
+                try (var is = Files.newInputStream(cls)) {
+                    var reader = new ClassReader(is);
+                    reader.accept(new ClassVisitor(Opcodes.ASM9) {
+                        private String clsName;
+                        @Override
+                        public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
+                            this.clsName = name;
+                            super.visit(version, access, name, signature, superName, interfaces);
+                        }
+
+                        @Override
+                        public AnnotationVisitor visitAnnotation(String name, boolean runtime) {
+                            if (!"Lnet/minecraftforge/fml/common/Mod;".equals(name))
+                                return super.visitAnnotation(name, runtime);
+
+                            return new AnnotationVisitor(Opcodes.ASM9) {
+                                @Override
+                                public void visit(String key, Object value) {
+                                    if ("value".equals(key)) {
+                                        int idx = clsName.lastIndexOf('/');
+                                        var pkg = clsName.substring(0, idx);
+                                        mods.computeIfAbsent(pkg, k -> new HashSet<>()).add((String)value);
+
+                                        idx = pkg.lastIndexOf('/');
+                                        while (idx != -1) {
+                                            pkg = pkg.substring(0, idx);
+                                            idx = pkg.lastIndexOf('/');
+                                            if (mods.containsKey(pkg))
+                                                throw new IllegalStateException("Invalid ForgeDev test mod layout, conflicting packages: " + pkg + " for " + clsName);
+                                        }
+                                    }
+                                }
+                            };
+                        }
+                    }, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
+                }
+            }
+        } catch (IOException e) {
+            sneak(e);
+        }
+        return mods;
+    }
+
+    // Builds or update the mods.toml file for all @Mods in this package
+    private void buildModsToml(Set<Path> resources, Set<String> modids, Path root) {
+        var toml = resources.stream()
+            .map(p -> p.resolve(MODS_TOML))
+            .filter(Files::exists)
+            .findFirst()
+            .orElse(null);
+
+        Config cfg = null;
+
+        if (toml != null)
+            cfg = new TomlParser().parse(toml, FileNotFoundAction.READ_NOTHING);
+        else
+            cfg = Config.inMemory();
+
+        boolean modified = false;
+        var defaults = Map.of(
+            "modLoader", "javafml",
+            "loaderVersion", "[0,)",
+            "license", "Doesnt fucking matter"
+        );
+
+        for (var key : defaults.keySet()) {
+            if (!cfg.contains(key)) {
+                cfg.set(key, defaults.get(key));
+                modified = true;
+            }
+        }
+
+        var modlist = new ArrayList<Config>();
+        if (cfg.contains("mods")) {
+            @SuppressWarnings("unchecked")
+            var existing = ((List<Config>)cfg.get("mods"));
+            modlist.addAll(existing);
+        }
+
+        for (var modid : modids) {
+            if (!modlist.stream().anyMatch(c -> modid.equals(c.get("modId")))) {
+                modified = true;
+                var tmp = Config.inMemory();
+                tmp.set("modId", modid);
+                modlist.add(tmp);
+            }
+        }
+
+        cfg.set("mods", modlist);
+
+        if (modified) {
+            var target = root.resolve(MODS_TOML);
+            try {
+                Files.createDirectories(target.getParent());
+                new TomlWriter().write(cfg, target, WritingMode.REPLACE);
+            } catch (IOException e) {
+                throw new IllegalStateException("Failed to create in memory toml: " + target, e);
+            }
+        }
+    }
+
+    // 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 void buildPackMeta(Set<Path> paths, Path root) {
+        var existing = paths.stream()
+                .map(p -> p.resolve(PACK_META))
+                .filter(Files::exists)
+                .findFirst()
+                .orElse(null);
+
+        if (existing != null)
+            return;
+        var target = root.resolve(PACK_META);
+        try {
+            Files.createDirectories(target.getParent());
+            Files.writeString(target,
+            """
+            {
+                "pack": {
+                    "description": "doesn't matter",
+                    "pack_format": 18
+                 }
+            }
+            """, StandardCharsets.UTF_8, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE);
+        } catch (IOException e) {
+            throw new IllegalStateException("Failed to make in memory pack.mcmeta: " + 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

@@ -7,14 +7,10 @@ package net.minecraftforge.fml.loading.targets;
 
 import java.nio.file.Path;
 import java.util.List;
-import java.util.function.BiPredicate;
-
 import org.jetbrains.annotations.ApiStatus;
 
-import cpw.mods.jarhandling.SecureJar;
 import net.minecraftforge.fml.loading.FMLLoader;
 import net.minecraftforge.fml.loading.LibraryFinder;
-import net.minecraftforge.fml.loading.VersionInfo;
 
 @ApiStatus.Internal
 abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
@@ -25,75 +21,22 @@ abstract class ForgeProdLaunchHandler extends CommonLaunchHandler {
     @Override public String getNaming() { return "srg"; }
     @Override public boolean isProduction() { return true; }
 
-    protected Path mvn(VersionInfo info, String artifact) {
-        return mvn(info, artifact, "");
-    }
-    protected Path mvn(VersionInfo info, String artifact, String classifier) {
-        return mvn(info.forgeGroup(), artifact, classifier, info.mcAndForgeVersion());
-    }
-    protected Path mvn(String group, String artifact, String classifier, String version) {
-        return LibraryFinder.findPathForMaven(group, artifact, "", classifier, version);
-    }
-
     @Override
-    public LocatedPaths getMinecraftPaths() {
+    public List<Path> getMinecraftPaths() {
         var vers = FMLLoader.versionInfo();
-
-        // Minecraft
-        var mc = getMCPaths(vers);
-
-        // mods (Forge)
-        var forgejar     = mvn(vers, "forge", "universal");
-
-        // Libraries
-        var fmlcore      = mvn(vers, "fmlcore");
-        var javafmllang  = mvn(vers, "javafmllanguage");
-        var lowcodelang  = mvn(vers, "lowcodelanguage");
-        var mclang       = mvn(vers, "mclanguage");
-
-        return new LocatedPaths(
-            mc,
-            null,
-            List.of(List.of(forgejar)),
-            List.of(fmlcore, javafmllang, lowcodelang, mclang)
-        );
+        var mc = LibraryFinder.findPathForMaven(vers.forgeGroup(), "forge", "", this.type.name(), vers.mcAndForgeVersion());
+        return List.of(mc);
     }
 
-    protected abstract List<Path> getMCPaths(VersionInfo vers);
-
     public static class Client extends ForgeProdLaunchHandler {
         public Client() {
             super(CLIENT);
         }
-
-        @Override
-        protected List<Path> getMCPaths(VersionInfo vers) {
-            var mc      = mvn("net.minecraft", "client", "srg", vers.mcAndMCPVersion());
-            var mcextra = mvn("net.minecraft", "client", "extra", vers.mcAndMCPVersion());
-            var patches = mvn(vers, "forge", "client");
-            return List.of(mc, mcextra, patches);
-        }
     }
+
     public static class Server extends ForgeProdLaunchHandler {
         public Server() {
             super(SERVER);
         }
-
-        @Override
-        protected List<Path> getMCPaths(VersionInfo vers) {
-            var mc      = mvn("net.minecraft", "server", "srg", vers.mcAndMCPVersion());
-            var mcextra = mvn("net.minecraft", "server", "extra", vers.mcAndMCPVersion());
-            var patches = mvn(vers, "forge", "server");
-
-            // TODO: Get rid of this by filtering the file at install time.
-            // We only want it for it's resources. So filter everything else out.
-            BiPredicate<String, String> filter = (path, base) -> {
-                return path.equals("META-INF/versions/") || // This is required because it bypasses our filter for the manifest, and it's a multi-release jar.
-                      (!path.endsWith(".class") && !path.startsWith("META-INF/"));
-            };
-            mcextra = SecureJar.from(filter, mcextra).getRootPath();
-
-            return List.of(mc, mcextra, patches);
-        }
     }
 }

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

@@ -6,14 +6,13 @@
 package net.minecraftforge.fml.loading.targets;
 
 import net.minecraftforge.fml.loading.FMLLoader;
-import java.io.File;
 import java.nio.file.Path;
 import java.util.List;
-import java.util.Objects;
-import java.util.stream.Stream;
-
+import java.util.function.BiPredicate;
 import org.jetbrains.annotations.ApiStatus;
 
+import cpw.mods.jarhandling.SecureJar;
+
 @ApiStatus.Internal
 abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
     private ForgeUserdevLaunchHandler(LaunchType type) {
@@ -21,8 +20,8 @@ abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
     }
 
     @Override
-    public LocatedPaths getMinecraftPaths() {
-        var legacyCP = Objects.requireNonNull(System.getProperty("legacyClassPath"), "Missing legacyClassPath, cannot find userdev jars").split(File.pathSeparator);
+    public List<Path> getMinecraftPaths() {
+        var legacyCP = findClassPath();
         var vers = FMLLoader.versionInfo();
 
         // Minecraft is extra jar {resources} + forge jar {patches}
@@ -30,22 +29,8 @@ abstract class ForgeUserdevLaunchHandler extends CommonDevLaunchHandler {
         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 filter = getMcFilter(extra, List.of(forge));
-
-        // Mods is forge classes + anything from MOD_CLASSES
-        var modstream = Stream.<List<Path>>builder();
-        // We want the forge as a seperate mod jar.
-        var forgemod = this.getForgeMod(List.of(forge));
-        modstream.add(List.of(forgemod));
-        // Mod code is in exploded directories
-        getModClasses().forEach((modid, paths) -> modstream.add(paths));
-
-        return new LocatedPaths(
-            List.of(forge, extra),
-            filter,
-            modstream.build().toList(),
-            getLibraries(legacyCP)
-        );
+        var minecraft = CommonDevLaunchHandler.getMinecraftOnly(extra, forge);
+        return List.of(minecraft);
     }
 
     public static class Client extends ForgeUserdevLaunchHandler {

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

@@ -0,0 +1,27 @@
+package net.minecraftforge.fml.loading.targets;
+
+import java.util.List;
+import org.jetbrains.annotations.ApiStatus;
+import net.minecraftforge.fml.loading.FMLLoader;
+import net.minecraftforge.fml.loading.moddiscovery.AbstractModProvider;
+import net.minecraftforge.forgespi.locating.IModLocator;
+
+@ApiStatus.Internal
+public class ForgeUserdevLocator extends AbstractModProvider implements IModLocator {
+    @Override
+    public String name() {
+        return "forge_userdev_locator";
+    }
+
+    @Override
+    public List<ModFileOrException> scanMods() {
+        var handler = FMLLoader.getLaunchHandler();
+
+        if (!(handler instanceof ForgeUserdevLaunchHandler))
+            return List.of();
+        var forge = ForgeDevLaunchHandler.getPathFromResource("net/minecraftforge/common/MinecraftForge.class");
+        var filtered = ForgeUserdevLaunchHandler.getForgeOnly(forge);
+        var mod = createMod(filtered);
+        return List.of(mod);
+    }
+}

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

@@ -0,0 +1,51 @@
+package net.minecraftforge.fml.loading.targets;
+
+import java.io.IOException;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.nio.file.spi.FileSystemProvider;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.function.BiPredicate;
+
+import org.jetbrains.annotations.ApiStatus;
+
+@ApiStatus.Internal
+final class UnionHelper {
+    private static final FileSystemProvider UFSP = getUnionFileSystemProvider();
+    private static FileSystemProvider getUnionFileSystemProvider() {
+        for (var provider : FileSystemProvider.installedProviders()) {
+            if ("union".equals(provider.getScheme()))
+                return provider;
+        }
+        throw new IllegalStateException("Missing UnionFileSystemProvider");
+    };
+
+    static FileSystem newFileSystem(BiPredicate<String, String> filter, Path[] paths) {
+        try {
+            if (paths == null || paths.length == 0)
+                throw new IllegalArgumentException("Must contain atleast one path");
+
+            if (filter == null && paths.length == 1)
+                return FileSystems.newFileSystem(paths[0]);
+
+            var map = new HashMap<String, Object>();
+            if (filter != null)
+                map.put("filter", filter);
+
+            var lst = new ArrayList<>(Arrays.asList(paths));
+            var base = lst.remove(0);
+            map.put("additional", lst);
+            return UFSP.newFileSystem(base, map);
+        } catch (IOException e) {
+            return sneak(e);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private static <E extends Throwable, R> R sneak(Throwable e) throws E {
+        throw (E)e;
+    }
+}

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

@@ -1,2 +1 @@
-net.minecraftforge.fml.loading.ModDirTransformerDiscoverer
-net.minecraftforge.fml.loading.ClasspathTransformerDiscoverer
+net.minecraftforge.fml.loading.ModDirTransformerDiscoverer

fmlloader/src/main/resources/META-INF/services/net.minecraftforge.forgespi.locating.IModLocator

@@ -1,5 +1,5 @@
 net.minecraftforge.fml.loading.moddiscovery.ModsFolderLocator
-net.minecraftforge.fml.loading.moddiscovery.MavenDirectoryLocator
-net.minecraftforge.fml.loading.moddiscovery.ExplodedDirectoryLocator
 net.minecraftforge.fml.loading.moddiscovery.MinecraftLocator
 net.minecraftforge.fml.loading.moddiscovery.ClasspathLocator
+net.minecraftforge.fml.loading.targets.ForgeDevLocator
+net.minecraftforge.fml.loading.targets.ForgeUserdevLocator

fmlloader/src/main/resources/log4j2.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<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"/>

gradle.properties

@@ -1,4 +1,11 @@
 # 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=-Xmx3G
-org.gradle.daemon=false
+org.gradle.daemon=false
+
+JAVA_VERSION=17
+MC_VERSION=1.20.2
+MC_NEXT_VERSION=1.21
+MCP_VERSION=20230921.100330
+MAPPING_CHANNEL=official
+MAPPING_VERSION=1.20.2

javafmllanguage/build.gradle

@@ -1,12 +1,13 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'com.github.ben-manes.versions'
-    id 'org.javamodularity.moduleplugin' version '1.8.3' apply false
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
-dependencyUpdates.rejectVersionIf { isNonStable(it.candidate.version) }
+apply from: rootProject.file('build_shared.gradle')
 
 dependencies {
     compileOnly(libs.nulls)
@@ -14,38 +15,25 @@ dependencies {
     implementation(project(':fmlcore'))
 }
 
-task sourcesJar(type: Jar) {
-    archiveClassifier = 'sources'
-    from sourceSets.main.allSource
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+    withSourcesJar()
 }
 
-ext {
-    MANIFESTS = [
-        '': [
-            'FMLModType': 'LANGPROVIDER',
-            'Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ssZ"),
-            'Git-Commit': GIT_INFO.abbreviatedId,
-            'Git-Branch': GIT_INFO.branch,
-            'Build-Number': "${System.getenv('BUILD_NUMBER')?:0}",
-        ] as LinkedHashMap,
-        'net/minecraftforge/fml/loading/': [
-            'Specification-Title':      'FMLLoader',
-            'Specification-Vendor':     'Forge Development LLC',
-            'Specification-Version':    '1',
-            'Implementation-Title':     'FML Loader',
-            'Implementation-Version':   '1.0',
-            'Implementation-Vendor':    'Forge'
-        ] as LinkedHashMap
-    ]
-}
-
-jar.doFirst {
-    manifest.attributes['Automatic-Module-Name'] = project.name
-    MANIFESTS.each { pkg, values ->
-        if (pkg == '')
-            manifest.attributes(values)
-        else
-            manifest.attributes(values, pkg)
+tasks.named('jar', Jar).configure {
+    manifest {
+        attributes([
+            'Automatic-Module-Name': 'net.minecraftforge.javafmlmod',
+            'FMLModType': 'LANGPROVIDER'
+        ] as LinkedHashMap)
+        attributes([
+            'Specification-Title':   'JavaFMLMod',
+            'Specification-Vendor':  'Forge Development LLC',
+            'Specification-Version': '1',
+            'Implementation-Title':  'JavaFMLMod',
+            'Implementation-Vendor': 'Forge Development LLC',
+            'Implementation-Version': FORGE_VERSION
+        ] as LinkedHashMap, 'net/minecraftforge/fml/javafmlmod/')
     }
 }
 
@@ -55,16 +43,22 @@ tasks.withType(JavaCompile) {
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-
-    include 'net/minecraftforge/'
 }
 
-artifacts {
-    archives jar
-    archives sourcesJar
-}
-
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
-    artifact sourcesJar
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'javafmllanguage'
+        pom {
+            name = project.name
+            description = 'Language provider for Minecraft Forge that provides basic java mod functionality'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }

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

@@ -6,67 +6,74 @@
 package net.minecraftforge.fml.javafmlmod;
 
 import net.minecraftforge.api.distmarker.Dist;
+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.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.fml.loading.moddiscovery.ModAnnotation;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.objectweb.asm.Type;
 
-import java.util.Arrays;
-import java.util.EnumSet;
 import java.util.List;
-import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Collectors;
 
-import static net.minecraftforge.fml.Logging.LOADING;
-
 /**
- * Automatic eventbus subscriber - reads {@link net.minecraftforge.fml.common.Mod.EventBusSubscriber}
- * annotations and passes the class instances to the {@link net.minecraftforge.fml.common.Mod.EventBusSubscriber.Bus}
+ * Automatic eventbus subscriber - reads {@link EventBusSubscriber}
+ * annotations and passes the class instances to the {@link nBus}
  * defined by the annotation. Defaults to {@code MinecraftForge#EVENT_BUS}
  */
-public class AutomaticEventSubscriber
-{
+public class AutomaticEventSubscriber {
     private static final Logger LOGGER = LogManager.getLogger();
-    private static final Type AUTO_SUBSCRIBER = Type.getType(Mod.EventBusSubscriber.class);
+    private static final Type AUTO_SUBSCRIBER = Type.getType(EventBusSubscriber.class);
     private static final Type MOD_TYPE = Type.getType(Mod.class);
-    public static void inject(final ModContainer mod, final ModFileScanData scanData, final ClassLoader loader)
-    {
-        if (scanData == null) return;
-        LOGGER.debug(LOADING,"Attempting to inject @EventBusSubscriber classes into the eventbus for {}", mod.getModId());
-        List<ModFileScanData.AnnotationData> ebsTargets = scanData.getAnnotations().stream().
-                filter(annotationData -> AUTO_SUBSCRIBER.equals(annotationData.annotationType())).
-                collect(Collectors.toList());
-        Map<String, String> modids = scanData.getAnnotations().stream().
-                filter(annotationData -> MOD_TYPE.equals(annotationData.annotationType())).
-                collect(Collectors.toMap(a -> a.clazz().getClassName(), a -> (String)a.annotationData().get("value")));
 
-        ebsTargets.forEach(ad -> {
-            @SuppressWarnings("unchecked")
-            final List<ModAnnotation.EnumHolder> sidesValue = (List<ModAnnotation.EnumHolder>)ad.annotationData().
-                    getOrDefault("value", Arrays.asList(new ModAnnotation.EnumHolder(null, "CLIENT"), new ModAnnotation.EnumHolder(null, "DEDICATED_SERVER")));
-            final EnumSet<Dist> sides = sidesValue.stream().map(eh -> Dist.valueOf(eh.getValue())).
-                    collect(Collectors.toCollection(() -> EnumSet.noneOf(Dist.class)));
-            final String modId = (String)ad.annotationData().getOrDefault("modid", modids.getOrDefault(ad.clazz().getClassName(), mod.getModId()));
-            final ModAnnotation.EnumHolder busTargetHolder = (ModAnnotation.EnumHolder)ad.annotationData().getOrDefault("bus", new ModAnnotation.EnumHolder(null, "FORGE"));
-            final Mod.EventBusSubscriber.Bus busTarget = Mod.EventBusSubscriber.Bus.valueOf(busTargetHolder.getValue());
+    public static void inject(ModContainer mod, ModFileScanData scanData, ClassLoader loader) {
+        if (scanData == null) return;
+        LOGGER.debug(Logging.LOADING, "Attempting to inject @EventBusSubscriber classes into the eventbus for {}", mod.getModId());
+
+        var targets = scanData.getAnnotations().stream()
+            .filter(data -> AUTO_SUBSCRIBER.equals(data.annotationType()))
+            .toList();
+
+        var modids = scanData.getAnnotations().stream()
+            .filter(data -> MOD_TYPE.equals(data.annotationType()))
+            .collect(Collectors.toMap(a -> a.clazz().getClassName(), a -> (String)a.annotationData().get("value")));
+
+        var defaultSides = List.of(new EnumData(null, "CLIENT"), new EnumData(null, "DEDICATED_SERVER"));
+        var defaultBus = new EnumData(null, "FORGE");
+
+        for (var data : targets) {
+            var modId = modids.getOrDefault(data.clazz().getClassName(), mod.getModId());
+            modId = value(data, "modid", modId);
+
+            var sidesValue = value(data, "value", defaultSides);
+            var sides = sidesValue.stream()
+                .map(EnumData::value)
+                .map(Dist::valueOf)
+                .collect(Collectors.toSet());
+
+            var busName = value(data, "bus", defaultBus).value();
+            var busTarget = Bus.valueOf(busName);
             if (Objects.equals(mod.getModId(), modId) && sides.contains(FMLEnvironment.dist)) {
-                try
-                {
-                    LOGGER.debug(LOADING, "Auto-subscribing {} to {}", ad.clazz().getClassName(), busTarget);
-                    busTarget.bus().get().register(Class.forName(ad.clazz().getClassName(), true, loader));
-                }
-                catch (ClassNotFoundException e)
-                {
-                    LOGGER.fatal(LOADING, "Failed to load mod class {} for @EventBusSubscriber annotation", ad.clazz(), e);
+                try {
+                    LOGGER.debug(Logging.LOADING, "Auto-subscribing {} to {}", data.clazz().getClassName(), busTarget);
+                    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);
                 }
             }
-        });
+        }
     }
 
+    @SuppressWarnings("unchecked")
+    private static <R> R value(AnnotationData data, String key, R value) {
+        return (R)data.annotationData().getOrDefault(key, value);
+    }
 }

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

@@ -25,8 +25,7 @@ import java.lang.reflect.InvocationTargetException;
 import java.util.Objects;
 import java.util.Optional;
 
-public class FMLModContainer extends ModContainer
-{
+public class FMLModContainer extends ModContainer {
     private static final Logger LOGGER = LogManager.getLogger();
     private static final Marker LOADING = MarkerManager.getMarker("LOADING");
     private final ModFileScanData scanResults;
@@ -34,8 +33,7 @@ public class FMLModContainer extends ModContainer
     private Object modInstance;
     private final Class<?> modClass;
 
-    public FMLModContainer(IModInfo info, String className, ModFileScanData modFileScanResults, ModuleLayer gameLayer)
-    {
+    public FMLModContainer(IModInfo info, String className, ModFileScanData modFileScanResults, ModuleLayer gameLayer) {
         super(info);
         LOGGER.debug(LOADING,"Creating FMLModContainer instance for {}", className);
         this.scanResults = modFileScanResults;
@@ -44,66 +42,60 @@ public class FMLModContainer extends ModContainer
         this.configHandler = Optional.of(ce->this.eventBus.post(ce.self()));
         final FMLJavaModLoadingContext contextExtension = new FMLJavaModLoadingContext(this);
         this.contextExtension = () -> contextExtension;
-        try
-        {
-            var layer = gameLayer.findModule(info.getOwningFile().moduleName()).orElseThrow();
-            modClass = Class.forName(layer, className);
+
+
+        try {
+            var moduleName = info.getOwningFile().moduleName();
+            var module = gameLayer.findModule(moduleName)
+                .orElseThrow(() -> new IllegalStateException("Failed to find " + moduleName + " in " + gameLayer));
+            modClass = Class.forName(module, className);
             LOGGER.trace(LOADING,"Loaded modclass {} with {}", modClass.getName(), modClass.getClassLoader());
-        }
-        catch (Throwable e)
-        {
+        } catch (Throwable e) {
             LOGGER.error(LOADING, "Failed to load class {}", className, e);
             throw new ModLoadingException(info, ModLoadingStage.CONSTRUCT, "fml.modloading.failedtoloadmodclass", e);
         }
     }
 
-    private void onEventFailed(IEventBus iEventBus, Event event, IEventListener[] iEventListeners, int i, Throwable throwable)
-    {
+    private void onEventFailed(IEventBus iEventBus, Event event, IEventListener[] iEventListeners, int i, Throwable throwable) {
         LOGGER.error(new EventBusErrorMessage(event, i, iEventListeners, throwable));
     }
 
-    private void constructMod()
-    {
-        try
-        {
+    private void constructMod() {
+        try {
             LOGGER.trace(LOADING, "Loading mod instance {} of type {}", getModId(), modClass.getName());
             this.modInstance = modClass.getDeclaredConstructor().newInstance();
             LOGGER.trace(LOADING, "Loaded mod instance {} of type {}", getModId(), modClass.getName());
-        }
-        catch (Throwable e)
-        {
+        } catch (Throwable e) {
             // When a mod constructor throws an exception, it's wrapped in an InvocationTargetException which hides the
             // actual exception from the mod loading error screen.
             if (e instanceof InvocationTargetException wrapped)
                 e = Objects.requireNonNullElse(wrapped.getCause(), e); // unwrap the exception
 
-            LOGGER.error(LOADING,"Failed to create mod instance. ModID: {}, class {}", getModId(), modClass.getName(), e);
+            LOGGER.error(LOADING, "Failed to create mod instance. ModID: {}, class {}", getModId(), modClass.getName(), e);
             throw new ModLoadingException(modInfo, ModLoadingStage.CONSTRUCT, "fml.modloading.failedtoloadmod", e, modClass);
         }
+
         try {
             LOGGER.trace(LOADING, "Injecting Automatic event subscribers for {}", getModId());
             AutomaticEventSubscriber.inject(this, this.scanResults, this.modClass.getClassLoader());
             LOGGER.trace(LOADING, "Completed Automatic event subscribers for {}", getModId());
         } catch (Throwable e) {
-            LOGGER.error(LOADING,"Failed to register automatic subscribers. ModID: {}, class {}", getModId(), modClass.getName(), e);
+            LOGGER.error(LOADING, "Failed to register automatic subscribers. ModID: {}, class {}", getModId(), modClass.getName(), e);
             throw new ModLoadingException(modInfo, ModLoadingStage.CONSTRUCT, "fml.modloading.failedtoloadmod", e, modClass);
         }
     }
 
     @Override
-    public boolean matches(Object mod)
-    {
+    public boolean matches(Object mod) {
         return mod == modInstance;
     }
 
     @Override
-    public Object getMod()
-    {
+    public Object getMod() {
         return modInstance;
     }
 
-    public IEventBus getEventBus()
-    {
+    public IEventBus getEventBus() {
         return this.eventBus;
     }
 

lowcodelanguage/build.gradle

@@ -1,11 +1,18 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'org.javamodularity.moduleplugin' version '1.8.3' apply false
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
-java.withSourcesJar()
+apply from: rootProject.file('build_shared.gradle')
+
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
+    withSourcesJar()
+}
 
 dependencies {
     compileOnly(libs.nulls)
@@ -17,16 +24,16 @@ dependencies {
 tasks.named('jar', Jar).configure {
     manifest {
         attributes([
-            'Automatic-Module-Name': project.name.toLowerCase(),
+            'Automatic-Module-Name': 'net.minecraftforge.lowcodemod',
             'FMLModType': 'LANGPROVIDER'
-        ] as java.util.LinkedHashMap)
+        ] as LinkedHashMap)
         attributes([
-            'Specification-Title':      'LowCodeMod',
-            'Specification-Vendor':     'Forge Development LLC',
-            'Specification-Version':    '1.0',
-            'Implementation-Title':     project.name,
-            'Implementation-Version':   FORGE_VERSION.split('\\.')[0], //project.version, TODO: Split out into a real versioned system, for now use the default that net.minecraftforge.fml.loading.LanguageLoadingProvider.loadLanguageProviders() used
-            'Implementation-Vendor':    'Forge Development LLC'
+            'Specification-Title':   'LowCodeMod',
+            'Specification-Vendor':  'Forge Development LLC',
+            'Specification-Version': '1.0',
+            'Implementation-Title':   project.name,
+            'Implementation-Vendor': 'Forge Development LLC',
+            'Implementation-Version': FORGE_VERSION.split('\\.')[0]
         ] as java.util.LinkedHashMap, 'net/minecraftforge/fml/lowcodemod/')
     }
 }
@@ -37,9 +44,22 @@ tasks.withType(JavaCompile) {
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-    include 'net/minecraftforge/'
 }
 
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'lowcodelanguage'
+        pom {
+            name = project.name
+            description = 'Language provider for Minecraft Forge that loads resource packs as mods'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }

mclanguage/build.gradle

@@ -1,9 +1,14 @@
+import net.minecraftforge.gradleutils.PomUtils
+
 plugins {
-    id 'org.cadixdev.licenser'
     id 'java-library'
-    id 'jacoco'
+    id 'maven-publish'
+    id 'org.cadixdev.licenser'
+    id 'net.minecraftforge.gradleutils'
 }
 
+apply from: rootProject.file('build_shared.gradle')
+
 dependencies {
     compileOnly(libs.nulls)
     implementation(project(':fmlloader'))
@@ -11,22 +16,23 @@ dependencies {
 }
 
 java {
+    toolchain.languageVersion = JavaLanguageVersion.of(JAVA_VERSION)
     withSourcesJar()
 }
 
 tasks.named('jar', Jar).configure {
     manifest {
         attributes([
-            'Automatic-Module-Name': project.name.toLowerCase(),
-            'FMLModType': 'LANGPROVIDER',
+            'Automatic-Module-Name': 'net.minecraftforge.mclanguageprovider',
+            'FMLModType': 'LANGPROVIDER'
         ] as LinkedHashMap)
         attributes([
-            'Specification-Title':      'MCLanguage',
-            'Specification-Vendor':     'Forge Development LLC',
-            'Specification-Version':    '1',
-            'Implementation-Title':     'MCLanguage',
-            'Implementation-Version':   '1.0',
-            'Implementation-Vendor':    'Forge Development LLC',
+            'Specification-Title':    'MCLanguage',
+            'Specification-Vendor':   'Forge Development LLC',
+            'Specification-Version':  '1',
+            'Implementation-Title':   'MCLanguage',
+            'Implementation-Vendor':  'Forge Development LLC',
+            'Implementation-Version': '1.0'
         ] as LinkedHashMap, 'net/minecraftforge/fml/mclanguageprovider/')
     }
 }
@@ -37,9 +43,22 @@ tasks.withType(JavaCompile) {
 
 license {
     header = rootProject.file('LICENSE-header.txt')
-    include 'net/minecraftforge/'
 }
 
-publishing.publications.mavenJava(MavenPublication) {
-    from components.java
+publishing {
+    publications.register('mavenJava', MavenPublication).configure {
+        from components.java
+        artifactId = 'mclanguage'
+        pom {
+            name = project.name
+            description = 'Language provider for Minecraft Forge that provides Minecraft Itself'
+            url = 'https://github.com/MinecraftForge/MinecraftForge'
+            PomUtils.setGitHubDetails(pom, 'MinecraftForge')
+            license PomUtils.Licenses.LGPLv2_1
+        }
+    }
+    
+    repositories {
+        maven gradleutils.publishingForgeMaven
+    }
 }

mdk/build.gradle

@@ -73,12 +73,6 @@ minecraft {
             // 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'
-
-            mods {
-                "${mod_id}" {
-                    source sourceSets.main
-                }
-            }
         }
 
         client {
@@ -169,13 +163,12 @@ tasks.named('processResources', ProcessResources).configure {
 tasks.named('jar', Jar).configure {
     manifest {
         attributes([
-                'Specification-Title'     : mod_id,
-                'Specification-Vendor'    : mod_authors,
-                'Specification-Version'   : '1', // We are version 1 of ourselves
-                'Implementation-Title'    : project.name,
-                'Implementation-Version'  : project.jar.archiveVersion,
-                'Implementation-Vendor'   : mod_authors,
-                'Implementation-Timestamp': new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
+            'Specification-Title'     : mod_id,
+            'Specification-Vendor'    : mod_authors,
+            'Specification-Version'   : '1', // We are version 1 of ourselves
+            'Implementation-Title'    : project.name,
+            'Implementation-Version'  : project.jar.archiveVersion,
+            'Implementation-Vendor'   : mod_authors
         ])
     }
 
@@ -205,3 +198,20 @@ publishing {
 tasks.withType(JavaCompile).configureEach {
     options.encoding = 'UTF-8' // Use the UTF-8 charset for Java compilation
 }
+
+eclipse {
+    // Run everytime eclipse builds the code
+    //autoBuildTasks genEclipseRuns
+    // Run when importing the project
+    synchronizationTasks 'genEclipseRuns'
+}
+
+// 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 {
+    def dir = layout.buildDirectory.dir("sourcesSets/$it.name")
+    it.output.resourcesDir = dir
+    it.java.destinationDirectory = dir
+}

server_files/args.txt

@@ -1,13 +0,0 @@
--p @MODULE_PATH@
---add-modules @MODULES@
---add-exports jdk.naming.dns/com.sun.jndi.dns=java.naming
--Djava.net.preferIPv6Addresses=system
--DignoreList=@IGNORE_LIST@
--DlibraryDirectory=libraries
--DlegacyClassPath=@CLASS_PATH@
-net.minecraftforge.bootstrap.BootstrapLauncher
---launchTarget @TASK@
---fml.forgeVersion @FORGE_VERSION@
---fml.mcVersion @MC_VERSION@
---fml.forgeGroup @FORGE_GROUP@
---fml.mcpVersion @MCP_VERSION@

server_files/run.bat

@@ -1,7 +0,0 @@
-@echo off
-REM Forge requires a configured set of both JVM and program arguments.
-REM Add custom JVM arguments to the user_jvm_args.txt
-REM Add custom program arguments {such as nogui} to this file in the next line before the %* or
-REM  pass them to this script directly
-java @user_jvm_args.txt @libraries/@MAVEN_PATH@/win_args.txt %*
-pause

server_files/run.sh

@@ -1,6 +0,0 @@
-#!/usr/bin/env sh
-# Forge requires a configured set of both JVM and program arguments.
-# Add custom JVM arguments to the user_jvm_args.txt
-# Add custom program arguments {such as nogui} to this file in the next line before the "$@" or
-#  pass them to this script directly
-java @user_jvm_args.txt @libraries/@MAVEN_PATH@/unix_args.txt "$@"

server_files/user_jvm_args.txt

@@ -1,9 +0,0 @@
-# Xmx and Xms set the maximum and minimum RAM usage, respectively.
-# They can take any number, followed by an M or a G.
-# M means Megabyte, G means Gigabyte.
-# For example, to set the maximum to 3GB: -Xmx3G
-# To set the minimum to 2.5GB: -Xms2500M
-
-# A good default for a modded server is 4GB.
-# Uncomment the next line to set it.
-# -Xmx4G

settings.gradle

@@ -3,7 +3,7 @@ import org.gradle.internal.os.OperatingSystem
 pluginManagement {
     repositories {
         gradlePluginPortal()
-        mavenLocal()
+        //mavenLocal()
         maven { url = 'https://maven.minecraftforge.net/' }
     }
 }
@@ -25,10 +25,12 @@ plugins {
 dependencyResolutionManagement {
     versionCatalogs {
         libs {
-            library('forgespi', 'net.minecraftforge:forgespi:7.1.0') // Needs modlauncher
-            library('bootstrap', 'net.minecraftforge:bootstrap:1.2.0') // Needs modlauncher
-            library('modlauncher', 'net.minecraftforge:modlauncher:10.1.1') // Needs securemodules
-            library('securemodules', 'net.minecraftforge:securemodules:2.2.3') // Needs unsafe
+            library('forgespi', 'net.minecraftforge:forgespi:7.1.1') // Needs modlauncher
+            library('bootstrap', 'net.minecraftforge:bootstrap:2.0.0') // Needs modlauncher
+            library('bootstrap-api', 'net.minecraftforge:bootstrap-api:2.0.0')
+            library('bootstrap-shim', 'net.minecraftforge:bootstrap-shim:2.0.0')
+            library('modlauncher', 'net.minecraftforge:modlauncher:10.1.2') // Needs securemodules
+            library('securemodules', 'net.minecraftforge:securemodules:2.2.7') // Needs unsafe
             library('unsafe', 'net.minecraftforge:unsafe:0.9.2')
             library('accesstransformers', 'net.minecraftforge:accesstransformers:8.1.1')
             library('antlr-runtime', 'org.antlr:antlr4-runtime:4.9.1') // Needed by Access Transformer because parsing a simple text file was too complicated
@@ -37,16 +39,16 @@ dependencyResolutionManagement {
             library('eventbus', 'net.minecraftforge:eventbus:6.2.0')
             library('typetools', 'net.jodah:typetools:0.6.3') // Needed by EventBus because of lambdas
             library('mergetool-api', 'net.minecraftforge:mergetool-api:1.0')
-            
+
             library('mixin', 'org.spongepowered:mixin:0.8.5')
             library('nulls', 'org.jetbrains:annotations:23.0.0') // Got to have our null annotations!
-            library('slf4j-api', 'org.slf4j:slf4j-api:1.8.0-beta4')
+            library('slf4j-api', 'org.slf4j:slf4j-api:2.0.7')
             library('maven-artifact', 'org.apache.maven:maven-artifact:3.8.5')
-            
+
             // Google's InMemory File System. Used by ForgeDev Tests for now, but could be useful for a lot of things.
             library('jimfs', 'com.google.jimfs:jimfs:1.3.0')
             bundle('jimfs', ['guava', 'failureaccess'])
-            
+
             // ASM it's used for so many of our hacks
             version('asm', '9.6')
             library('asm',          'org.ow2.asm', 'asm'         ).versionRef('asm')
@@ -55,27 +57,27 @@ dependencyResolutionManagement {
             library('asm-commons',  'org.ow2.asm', 'asm-commons' ).versionRef('asm')
             library('asm-analysis', 'org.ow2.asm', 'asm-analysis').versionRef('asm')
             bundle('asm', ['asm', 'asm-tree', 'asm-util', 'asm-commons', 'asm-analysis'])
-            
+
             // Terminal Console Appender.. essentually make pretty colors in the console, but it's been a PITA
             library('terminalconsoleappender', 'net.minecrell:terminalconsoleappender:1.2.0')
             version('jline', '3.12.1')
             library('jline-reader',   'org.jline', 'jline-reader'  ).versionRef('jline')
             library('jline-terminal', 'org.jline', 'jline-terminal').versionRef('jline')
             bundle('terminalconsoleappender', ['terminalconsoleappender', 'jline-reader', 'jline-terminal'])
-            
+
             // The core of our configuration system, it has many flaws, but it works for the most part
             version('night-config', '3.6.4')
             library('night-config-toml', 'com.electronwill.night-config', 'toml').versionRef('night-config')
             library('night-config-core', 'com.electronwill.night-config', 'core').versionRef('night-config')
             bundle('night-config', ['night-config-toml', 'night-config-core'])
-            
+
             // Jar in Jar FileSystem
             version('jarjar', '0.3.19')
             library('jarjar-fs',       'net.minecraftforge', 'JarJarFileSystems').versionRef('jarjar')
             library('jarjar-meta',     'net.minecraftforge', 'JarJarMetadata'   ).versionRef('jarjar')
             library('jarjar-selector', 'net.minecraftforge', 'JarJarSelector'   ).versionRef('jarjar')
             bundle('jarjar', ['jarjar-fs', 'jarjar-selector', 'jarjar-meta'])
-            
+
             // These are libraries shipped by the MC launcher, try and keep them in sync with the manifest
             // but honestly if we don't it just means we ship them as normal libraries by adding them to the installer config in the forge project
             library('gson', 'com.google.code.gson:gson:2.10.1')
@@ -88,8 +90,8 @@ dependencyResolutionManagement {
             library('mojang-logging', 'com.mojang:logging:1.1.1')
             library('jopt-simple', 'net.sf.jopt-simple:jopt-simple:5.0.4')
             library('commons-io', 'commons-io:commons-io:2.13.0')
-            
-            version('lwjgl', '3.3.1')
+
+            version('lwjgl', '3.3.2')
             library('lwjgl',        'org.lwjgl', 'lwjgl'       ).versionRef('lwjgl')
             library('lwjgl-glfw',   'org.lwjgl', 'lwjgl-glfw'  ).versionRef('lwjgl')
             library('lwjgl-opengl', 'org.lwjgl', 'lwjgl-opengl').versionRef('lwjgl')
@@ -110,13 +112,14 @@ include 'lowcodelanguage'
 include 'fmlearlydisplay'
 
 include ':mcp'
-include ':forge'
-
 project(":mcp").projectDir = file("projects/mcp")
+
+include ':forge'
 project(":forge").projectDir = file("projects/forge")
+project(':forge').buildFileName = '../../build_forge.gradle'
 
 if (!System.env.TEAMCITY_VERSION) {
-	include ':clean'
-	project(':clean').projectDir = file('projects/clean')
-	project(':clean').buildFileName = '../../build_clean.gradle'
+    include ':clean'
+    project(':clean').projectDir = file('projects/clean')
+    project(':clean').buildFileName = '../../build_clean.gradle'
 }

src/fmllauncher/resources/log4j2.xml

@@ -1,69 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<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="${sys:forge.logging.marker.networking:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="CLASSLOADING" onMatch="${sys:forge.logging.marker.classloading:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="LAUNCHPLUGIN" onMatch="${sys:forge.logging.marker.launchplugin:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="CLASSDUMP" onMatch="${sys:forge.logging.marker.classdump:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="AXFORM" onMatch="${sys:forge.logging.marker.axform:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="EVENTBUS" onMatch="${sys:forge.logging.marker.eventbus:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="DISTXFORM" onMatch="${sys:forge.logging.marker.distxform:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="SCAN" onMatch="${sys:forge.logging.marker.scan:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="REGISTRIES" onMatch="${sys:forge.logging.marker.registries:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="REGISTRYDUMP" onMatch="${sys:forge.logging.marker.registrydump:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="SPLASH" onMatch="${sys:forge.logging.marker.splash:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="RESOURCE-CACHE" onMatch="${sys:forge.logging.marker.resource.cache:-DENY}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="FORGEMOD" onMatch="${sys:forge.logging.marker.forgemod:-ACCEPT}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="LOADING" onMatch="${sys:forge.logging.marker.loading:-ACCEPT}" onMismatch="NEUTRAL"/>
-        <MarkerFilter marker="CORE" onMatch="${sys:forge.logging.marker.core:-ACCEPT}" onMismatch="NEUTRAL"/>
-    </filters>
-    <Appenders>
-        <TerminalConsole name="Console">
-            <PatternLayout>
-                <LoggerNamePatternSelector defaultPattern="%highlightForge{[%d{HH:mm:ss}] [%t/%level] [%c{2.}/%markerSimpleName]: %minecraftFormatting{%msg{nolookup}}%n%tEx}">
-                    <!-- don't include the full logger name for Mojang's logs since they use full class names and it's very verbose -->
-                    <PatternMatch key="net.minecraft." pattern="%highlightForge{[%d{HH:mm:ss}] [%t/%level] [minecraft/%logger{1}]: %minecraftFormatting{%msg{nolookup}}%n%tEx}"/>
-                    <PatternMatch key="com.mojang." pattern="%highlightForge{[%d{HH:mm:ss}] [%t/%level] [mojang/%logger{1}]: %minecraftFormatting{%msg{nolookup}}%n%tEx}"/>
-                </LoggerNamePatternSelector>
-            </PatternLayout>
-        </TerminalConsole>
-        <Queue name="ServerGuiConsole" ignoreExceptions="true">
-            <PatternLayout>
-                <LoggerNamePatternSelector defaultPattern="[%d{HH:mm:ss}] [%t/%level] [%c{2.}/%markerSimpleName]: %minecraftFormatting{%msg{nolookup}}{strip}%n">
-                    <!-- don't include the full logger name for Mojang's logs since they use full class names and it's very verbose -->
-                    <PatternMatch key="net.minecraft." pattern="[%d{HH:mm:ss}] [%t/%level] [minecraft/%logger{1}]: %minecraftFormatting{%msg{nolookup}}{strip}%n"/>
-                    <PatternMatch key="com.mojang." pattern="[%d{HH:mm:ss}] [%t/%level] [mojang/%logger{1}]: %minecraftFormatting{%msg{nolookup}}{strip}%n"/>
-                </LoggerNamePatternSelector>
-            </PatternLayout>
-        </Queue>
-        <RollingRandomAccessFile name="File" fileName="logs/latest.log" filePattern="logs/%d{yyyy-MM-dd}-%i.log.gz">
-            <PatternLayout pattern="[%d{ddMMMyyyy HH:mm:ss.SSS}] [%t/%level] [%logger/%markerSimpleName]: %minecraftFormatting{%msg{nolookup}}{strip}%n%xEx"/>
-            <Policies>
-                <TimeBasedTriggeringPolicy/>
-                <OnStartupTriggeringPolicy/>
-            </Policies>
-            <DefaultRolloverStrategy max="99" fileIndex="min"/>
-        </RollingRandomAccessFile>
-        <RollingRandomAccessFile name="DebugFile" fileName="logs/debug.log" filePattern="logs/debug-%i.log.gz">
-            <PatternLayout pattern="[%d{ddMMMyyyy HH:mm:ss.SSS}] [%t/%level] [%logger/%markerSimpleName]: %minecraftFormatting{%msg{nolookup}}{strip}%n%xEx"/>
-            <Policies>
-                <OnStartupTriggeringPolicy/>
-                <SizeBasedTriggeringPolicy size="200MB"/>
-            </Policies>
-            <DefaultRolloverStrategy max="5" fileIndex="min"/>
-        </RollingRandomAccessFile>
-    </Appenders>
-    <Loggers>
-        <!-- make sure mojang's logging is set to 'info' so that their LOGGER.isDebugEnabled() behavior isn't active -->
-        <Logger level="${sys:forge.logging.mojang.level:-info}" name="com.mojang"/>
-        <Logger level="${sys:forge.logging.mojang.level:-info}" name="net.minecraft"/>
-        <Logger level="${sys:forge.logging.classtransformer.level:-info}" name="cpw.mods.modlauncher.ClassTransformer"/>
-        <Root level="all">
-            <AppenderRef ref="Console" level="${sys:forge.logging.console.level:-info}"/>
-            <AppenderRef ref="ServerGuiConsole" level="${sys:forge.logging.console.level:-info}"/>
-            <AppenderRef ref="File" level="${sys:forge.logging.file.level:-info}"/>
-            <AppenderRef ref="DebugFile" level="${sys:forge.logging.debugFile.level:-debug}"/>
-        </Root>
-    </Loggers>
-</Configuration>

src/fmllaunchertest/java/net/minecraftforge/fml/test/TopologicalSortTests.java

@@ -1,140 +0,0 @@
-/*
- * Minecraft Forge
- * Copyright (c) 2016-2021.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation version 2.1
- * of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-package net.minecraftforge.fml.test;
-
-import com.google.common.graph.GraphBuilder;
-import com.google.common.graph.MutableGraph;
-import net.minecraftforge.fml.loading.toposort.CyclePresentException;
-import net.minecraftforge.fml.loading.toposort.StronglyConnectedComponentDetector;
-import net.minecraftforge.fml.loading.toposort.TopologicalSort;
-import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.DisplayName;
-import org.junit.jupiter.api.Test;
-
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.List;
-import java.util.Set;
-
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.contains;
-import static org.hamcrest.Matchers.containsInAnyOrder;
-
-/**
- * Tests for topological sort.
- */
-public class TopologicalSortTests {
-
-    @Test
-    @DisplayName("strongly connected components")
-    @SuppressWarnings("unchecked")
-    void testScc() {
-        MutableGraph<Integer> graph = GraphBuilder.directed().build();
-        graph.putEdge(2, 4);
-        graph.putEdge(4, 7);
-        graph.putEdge(4, 6);
-        graph.putEdge(6, 1);
-        graph.putEdge(3, 4);
-        graph.putEdge(1, 4);
-        graph.putEdge(3, 1);
-        Set<Set<Integer>> components = new StronglyConnectedComponentDetector<>(graph).getComponents();
-        assertThat(components, containsInAnyOrder(contains(2), contains(3), contains(7), containsInAnyOrder(1, 4, 6)));
-    }
-
-    @Test
-    @DisplayName("strongly connected components 2")
-    @SuppressWarnings("unchecked")
-    void testScc2() {
-        MutableGraph<Integer> graph = GraphBuilder.directed().build();
-        graph.putEdge(2, 4);
-        graph.putEdge(4, 8);
-        graph.putEdge(8, 2);
-        graph.putEdge(2, 1);
-        graph.putEdge(2, 3);
-        graph.putEdge(1, 9);
-        graph.putEdge(9, 7);
-        graph.putEdge(7, 5);
-        graph.putEdge(5, 1);
-        graph.putEdge(5, 3);
-        graph.putEdge(3, 6);
-        graph.putEdge(6, 5);
-        graph.putEdge(9, 3);
-        Set<Set<Integer>> components = new StronglyConnectedComponentDetector<>(graph).getComponents();
-        assertThat(components, containsInAnyOrder(containsInAnyOrder(1, 3, 5, 6, 7, 9), containsInAnyOrder(2, 4, 8)));
-    }
-
-    @Test
-    @DisplayName("basic sort")
-    void testBasicSort() {
-        MutableGraph<Integer> graph = GraphBuilder.directed().build();
-        graph.putEdge(2, 4);
-        graph.putEdge(4, 7);
-        graph.putEdge(4, 6);
-        graph.putEdge(3, 4);
-        graph.putEdge(1, 4);
-        graph.putEdge(3, 1);
-        List<Integer> list = TopologicalSort.topologicalSort(graph, Comparator.naturalOrder());
-        assertThat(list, contains(2, 3, 1, 4, 6, 7));
-    }
-
-    @Test
-    @DisplayName("basic sort 2")
-    void testBasicSort2() {
-        MutableGraph<Integer> graph = GraphBuilder.directed().build();
-        graph.putEdge(7, 6);
-        graph.putEdge(8, 6);
-        graph.putEdge(8, 2);
-        graph.putEdge(12, 2);
-        graph.putEdge(2, 6);
-        graph.putEdge(6, 1);
-        graph.putEdge(2, 4);
-        graph.putEdge(2, 1);
-        graph.putEdge(1, 4);
-        graph.putEdge(1, 3);
-        graph.putEdge(4, 5);
-        graph.putEdge(1, 5);
-        graph.putEdge(5, 3);
-        graph.putEdge(1, 10);
-        graph.putEdge(3, 11);
-        graph.putEdge(5, 9);
-        graph.putEdge(11, 9);
-        graph.putEdge(11, 13);
-        graph.putEdge(10, 13);
-        List<Integer> list = TopologicalSort.topologicalSort(graph, Collections.reverseOrder());
-        assertThat(list, contains(12, 8, 7, 2, 6, 1, 10, 4, 5, 3, 11, 13, 9));
-    }
-
-    @Test
-    @DisplayName("loop sort")
-    void testLoopSort() {
-        MutableGraph<Integer> graph = GraphBuilder.directed().build();
-        graph.putEdge(2, 4);
-        graph.putEdge(4, 7);
-        graph.putEdge(4, 6);
-        graph.putEdge(6, 1);
-        graph.putEdge(3, 4);
-        graph.putEdge(1, 4);
-        graph.putEdge(3, 1);
-        CyclePresentException ex = Assertions.assertThrows(CyclePresentException.class, () -> {
-            TopologicalSort.topologicalSort(graph, Comparator.naturalOrder());
-        });
-        assertThat(ex.getCycles(), contains(containsInAnyOrder(1, 4, 6)));
-    }
-}