Port multiloader build to Fabric and Forge 1.20.1

build.gradle

@@ -1,11 +1,10 @@
-// Root build for the Architectury multiloader (Fabric / Forge / NeoForge).
-// Follows the standard Architectury 1.7.x example-template layout. Target MC
-// version is driven by gradle.properties (minecraft_version + the *_version
-// props). Default is 1.21.1; switch to 1.20.1 by editing gradle.properties and
-// swapping the version-specific mixin sources (see MULTILOADER.md).
+// Root build for the Architectury multiloader (Fabric / Forge).
+// Target MC version is driven by gradle.properties (minecraft_version + the
+// *_version props). This branch targets Minecraft 1.20.1 / Java 17.
 plugins {
-    id "architectury-plugin" version "3.4-SNAPSHOT"
-    id "dev.architectury.loom" version "1.7-SNAPSHOT" apply false
+    id "base"
+    id "architectury-plugin" version "3.4.164"
+    id "dev.architectury.loom" version "1.7.435" apply false
     id "com.gradleup.shadow" version "8.3.5" apply false
 }
 
@@ -58,3 +57,21 @@ subprojects {
         options.release = javaVer
     }
 }
+
+def runtimePlatforms = rootProject.enabled_platforms.split(",").collect { it.trim() }.findAll { !it.isEmpty() }
+
+tasks.register("collectRuntimeJars", Copy) {
+    into layout.buildDirectory.dir("libs")
+    doFirst {
+        delete(layout.buildDirectory.dir("libs"))
+    }
+    runtimePlatforms.each { platform ->
+        def remap = project(":${platform}").tasks.named("remapJar")
+        dependsOn remap
+        from(remap.flatMap { it.archiveFile })
+    }
+}
+
+tasks.named("build") {
+    dependsOn tasks.named("collectRuntimeJars")
+}