Rework the Gradle build scripts for multi-loader

* Shared logic is moved into a build plugin where possible
* Build time is significantly improved when the Gradle daemon is warmed
* Mixins are remapped in-place now, eliminating the need for refmaps
  at runtime. This also gets rid of some warning messages at startup.
* Module relationships are now correctly represented in IDEA for other
  source sets (fixes a lot of code analysis features)
* Split Java source and resources into different configurations
* Run configurations are now consistent between NeoForge/Fabric
* The common project is no longer remapped unnecessarily
* Updated Gradle and build plugins

.github/workflows/build-commit.yml

@@ -38,4 +38,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: sodium-artifacts-${{ steps.ref.outputs.branch }}
-          path: build/libs/*.jar
+          path: build/mods/*.jar

.github/workflows/build-pull-request.yml

@@ -28,4 +28,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: sodium-artifacts-${{ steps.ref.outputs.branch }}
-          path: build/libs/*.jar
+          path: build/mods/*.jar

.github/workflows/build-release.yml

@@ -28,6 +28,5 @@ jobs:
       - name: Upload assets to GitHub
         uses: AButler/[email protected]
         with:
-          # Filter built files to disregard -sources and -dev, and leave only the minecraft-compatible jars.
-          files: 'build/libs/*[0-9].jar;LICENSE'
+          files: 'build/mods/*.jar'
           repo-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/build-tag.yml

@@ -36,4 +36,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: sodium-artifacts-${{ steps.ref.outputs.branch }}
-          path: build/libs/*.jar
+          path: build/mods/*.jar

build.gradle.kts

@@ -1,84 +0,0 @@
-plugins {
-    id("java")
-    id("fabric-loom") version ("1.7.3") apply (false)
-}
-
-val MINECRAFT_VERSION by extra { "1.21.1" }
-val NEOFORGE_VERSION by extra { "21.1.46" }
-val FABRIC_LOADER_VERSION by extra { "0.16.4" }
-val FABRIC_API_VERSION by extra { "0.103.0+1.21.1" }
-
-// This value can be set to null to disable Parchment.
-// TODO: Re-add Parchment
-val PARCHMENT_VERSION by extra { null }
-
-// https://semver.org/
-val MOD_VERSION by extra { "0.6.0-beta.2" }
-
-allprojects {
-    apply(plugin = "java")
-    apply(plugin = "maven-publish")
-}
-
-tasks.withType<JavaCompile> {
-    options.encoding = "UTF-8"
-}
-
-// Disable the default publish task if it exists
-tasks.replace("publish").dependsOn(":fabric:publish", ":neoforge:publish")
-tasks.replace("publishToMavenLocal").dependsOn(":fabric:publishToMavenLocal", ":neoforge:publishToMavenLocal")
-
-tasks.jar {
-    enabled = false
-}
-
-subprojects {
-    apply(plugin = "maven-publish")
-
-    java.toolchain.languageVersion = JavaLanguageVersion.of(21)
-
-
-    fun createVersionString(): String {
-        val builder = StringBuilder()
-
-        val isReleaseBuild = project.hasProperty("build.release")
-        val buildId = System.getenv("GITHUB_RUN_NUMBER")
-
-        if (isReleaseBuild) {
-            builder.append(MOD_VERSION)
-        } else {
-            builder.append(MOD_VERSION.substringBefore('-'))
-            builder.append("-snapshot")
-        }
-
-        builder.append("+mc").append(MINECRAFT_VERSION)
-
-        if (!isReleaseBuild) {
-            if (buildId != null) {
-                builder.append("-build.${buildId}")
-            } else {
-                builder.append("-local")
-            }
-        }
-
-        return builder.toString()
-    }
-
-    tasks.processResources {
-        filesMatching("META-INF/neoforge.mods.toml") {
-            expand(mapOf("version" to createVersionString()))
-        }
-    }
-
-    version = createVersionString()
-    group = "net.caffeinemc.mods"
-
-    tasks.withType<JavaCompile> {
-        options.encoding = "UTF-8"
-        options.release.set(21)
-    }
-
-    tasks.withType<GenerateModuleMetadata>().configureEach {
-        enabled = false
-    }
-}

buildSrc/build.gradle.kts

@@ -0,0 +1,8 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    mavenCentral()
+    gradlePluginPortal()
+}

buildSrc/src/main/kotlin/BuildConfig.kt

@@ -0,0 +1,13 @@
+object BuildConfig {
+    val MINECRAFT_VERSION: String = "1.21.1"
+    val NEOFORGE_VERSION: String = "21.1.46"
+    val FABRIC_LOADER_VERSION: String = "0.16.4"
+    val FABRIC_API_VERSION: String = "0.103.0+1.21.1"
+
+    // This value can be set to null to disable Parchment.
+    // TODO: Re-add Parchment
+    val PARCHMENT_VERSION: String? = null
+
+    // https://semver.org/
+    val MOD_VERSION: String = "0.6.0-beta.2"
+}

buildSrc/src/main/kotlin/multiloader-base.gradle.kts

@@ -0,0 +1,44 @@
+plugins {
+    id("java-library")
+    id("idea")
+}
+
+group = "net.caffeinemc"
+version = BuildConfig.MOD_VERSION
+
+java.toolchain.languageVersion = JavaLanguageVersion.of(21)
+
+tasks.withType<JavaCompile> {
+    options.encoding = "UTF-8"
+    options.release.set(21)
+}
+
+tasks.withType<GenerateModuleMetadata>().configureEach {
+    enabled = false
+}
+
+repositories {
+    exclusiveContent {
+        forRepository {
+            maven {
+                name = "Modrinth"
+                url = uri("https://api.modrinth.com/maven")
+            }
+        }
+        filter {
+            includeGroup("maven.modrinth")
+        }
+    }
+
+    exclusiveContent {
+        forRepository {
+            maven {
+                name = "Parchment"
+                url = uri("https://maven.parchmentmc.org")
+            }
+        }
+        filter {
+            includeGroup("org.parchmentmc.data")
+        }
+    }
+}

buildSrc/src/main/kotlin/multiloader-platform.gradle.kts

@@ -0,0 +1,43 @@
+plugins {
+    id("multiloader-base")
+    id("maven-publish")
+}
+
+val configurationDesktopIntegrationJava: Configuration = configurations.create("commonDesktopIntegration") {
+    isCanBeResolved = true
+}
+
+dependencies {
+    configurationDesktopIntegrationJava(project(path = ":common", configuration = "commonDesktopJava"))
+}
+
+tasks {
+    processResources {
+        inputs.property("version", BuildConfig.MOD_VERSION)
+
+        filesMatching(listOf("fabric.mod.json", "META-INF/neoforge.mods.toml")) {
+            expand(mapOf("version" to BuildConfig.MOD_VERSION))
+        }
+    }
+
+    jar {
+        duplicatesStrategy = DuplicatesStrategy.FAIL
+        from(rootDir.resolve("LICENSE.md"))
+
+        // Entry-point for desktop integration when the file is executed directly
+        from(configurationDesktopIntegrationJava)
+        manifest.attributes["Main-Class"] = "net.caffeinemc.mods.sodium.desktop.LaunchWarn"
+    }
+}
+
+publishing {
+    publications {
+        create<MavenPublication>("maven") {
+            groupId = project.group as String
+            artifactId = project.name as String
+            version = BuildConfig.MOD_VERSION
+
+            from(components["java"])
+        }
+    }
+}