feat: allow enabling runtime md remapping using system properties

Author: AlexProgrammerDE

src/main/java/net/fabricmc/loader/impl/FabricLoaderImpl.java

@@ -202,7 +202,7 @@ public void load() {
 	}
 
 	private void setup() throws ModResolutionException {
-		boolean remapRegularMods = isDevelopmentEnvironment();
+		boolean remapRegularMods = FabricLauncherBase.getLauncher().isRemapMods();
 		VersionOverrides versionOverrides = new VersionOverrides();
 		DependencyOverrides depOverrides = new DependencyOverrides(configDir);
 

src/main/java/net/fabricmc/loader/impl/launch/FabricLauncher.java

@@ -57,6 +57,8 @@ public interface FabricLauncher {
 
 	boolean isDevelopment();
 
+	boolean isRemapMods();
+
 	String getEntrypoint();
 
 	String getDefaultRuntimeNamespace();

src/main/java/net/fabricmc/loader/impl/launch/FabricLauncherBase.java

@@ -54,6 +54,14 @@ public final boolean isDevelopment() {
 		return IS_DEVELOPMENT;
 	}
 
+	@Override
+	public final boolean isRemapMods() {
+		String ret = System.getProperty(SystemProperties.REMAP_MODS);
+		if (ret != null) return SystemProperties.isSet(SystemProperties.REMAP_MODS);
+
+		return IS_DEVELOPMENT;
+	}
+
 	@Override
 	public MappingConfiguration getMappingConfiguration() {
 		return mappingConfiguration;

src/main/java/net/fabricmc/loader/impl/launch/FabricMixinBootstrap.java

@@ -60,7 +60,7 @@ public static void init(EnvType side, FabricLoaderImpl loader) {
 
 		MixinBootstrap.init();
 
-		if (FabricLauncherBase.getLauncher().isDevelopment()) {
+		if (FabricLauncherBase.getLauncher().isRemapMods()) {
 			MappingConfiguration mappingConfiguration = FabricLauncherBase.getLauncher().getMappingConfiguration();
 			MappingTree mappings = mappingConfiguration.getMappings();
 			final String modNs = MappingConfiguration.INTERMEDIARY_NAMESPACE;
@@ -76,9 +76,9 @@ public static void init(EnvType side, FabricLoaderImpl loader) {
 					try {
 						MixinIntermediaryDevRemapper remapper = new MixinIntermediaryDevRemapper(mappings, modNs, runtimeNs);
 						MixinEnvironment.getDefaultEnvironment().getRemappers().add(remapper);
-						Log.info(LogCategory.MIXIN, "Loaded Fabric development mappings for mixin remapper!");
+						Log.info(LogCategory.MIXIN, "Loaded Fabric refmap remapping mappings for mixin remapper!");
 					} catch (Exception e) {
-						Log.error(LogCategory.MIXIN, "Fabric development environment setup error - the game will probably crash soon!", e);
+						Log.error(LogCategory.MIXIN, "Fabric refmap remapping setup error - the game will probably crash soon!", e);
 					}
 				}
 			}

src/main/java/net/fabricmc/loader/impl/util/SystemProperties.java

@@ -28,6 +28,8 @@ public final class SystemProperties {
 	public static final String GAME_MAPPING_NAMESPACE = "fabric.gameMappingNamespace";
 	// mapping namespace to use at runtime, defaults to named if DEVELOPMENT is set or intermediary otherwise
 	public static final String RUNTIME_MAPPING_NAMESPACE = "fabric.runtimeMappingNamespace";
+	// remaps mods to the runtime mapping namespace, defaults to true if DEVELOPMENT is set or false otherwise
+	public static final String REMAP_MODS = "fabric.remapMods";
 	// skips the embedded MC game provider, letting ServiceLoader-provided ones take over
 	public static final String SKIP_MC_PROVIDER = "fabric.skipMcProvider";
 	// game jar paths for common/client/server, replaces lookup from class path if present, env specific takes precedence