Allow default reobfuscation task to be disabled in legacy mode

src/legacy/java/net/neoforged/moddevgradle/legacyforge/dsl/LegacyForgeModdingSettings.java

@@ -20,6 +20,8 @@ public abstract class LegacyForgeModdingSettings {
 
     private Set<SourceSet> enabledSourceSets = new HashSet<>();
 
+    private boolean obfuscateJar = true;
+
     @Inject
     public LegacyForgeModdingSettings(Project project) {
         // By default, enable modding deps only for the main source set
@@ -64,11 +66,6 @@ public void setMcpVersion(String version) {
         this.mcpVersion = version;
     }
 
-    /**
-     * Contains the list of source sets for which access to Minecraft classes should be configured.
-     * Defaults to the main source set, but can also be set to an empty list.
-     */
-
     /**
      * Contains the list of source sets for which access to Minecraft classes should be configured.
      * Defaults to the main source set, but can also be set to an empty list.
@@ -80,4 +77,15 @@ public Set<SourceSet> getEnabledSourceSets() {
     public void setEnabledSourceSets(Set<SourceSet> enabledSourceSets) {
         this.enabledSourceSets = enabledSourceSets;
     }
+
+    /**
+     * {@return true if default reobfuscation task should be created}
+     */
+    public boolean isObfuscateJar() {
+        return obfuscateJar;
+    }
+
+    public void setObfuscateJar(boolean obfuscateJar) {
+        this.obfuscateJar = obfuscateJar;
+    }
 }

src/legacy/java/net/neoforged/moddevgradle/legacyforge/internal/LegacyForgeModDevPlugin.java

@@ -183,11 +183,13 @@ public void enable(Project project, LegacyForgeModdingSettings settings, LegacyF
             run.getProgramArguments().addAll(mixin.getConfigs().map(cfgs -> cfgs.stream().flatMap(config -> Stream.of("--mixin.config", config)).toList()));
         });
 
-        var reobfJar = obf.reobfuscate(
-                project.getTasks().named(JavaPlugin.JAR_TASK_NAME, Jar.class),
-                project.getExtensions().getByType(SourceSetContainer.class).getByName(SourceSet.MAIN_SOURCE_SET_NAME));
+        if (settings.isObfuscateJar()) {
+            var reobfJar = obf.reobfuscate(
+                    project.getTasks().named(JavaPlugin.JAR_TASK_NAME, Jar.class),
+                    project.getExtensions().getByType(SourceSetContainer.class).getByName(SourceSet.MAIN_SOURCE_SET_NAME));
 
-        project.getTasks().named("assemble", assemble -> assemble.dependsOn(reobfJar));
+            project.getTasks().named("assemble", assemble -> assemble.dependsOn(reobfJar));
+        }
 
         // Forge expects the mapping csv files on the root classpath
         artifacts.runtimeDependencies()

src/test/java/net/neoforged/moddevgradle/legacyforge/LegacyModDevPluginTest.java

@@ -2,6 +2,7 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.util.Set;
@@ -113,6 +114,16 @@ void testAddModdingDependenciesTo() {
         assertContainsModdingRuntimeDependencies(testSourceSet.getRuntimeClasspathConfigurationName());
     }
 
+    @Test
+    void testEnableWithoutReobfTask() {
+        extension.enable(settings -> {
+            settings.setForgeVersion(VERSION);
+            settings.setObfuscateJar(false);
+        });
+
+        assertNull(project.getTasks().findByName("reobfJar"));
+    }
+
     private void assertDoesNotContainModdingDependencies(String configurationName) {
         assertThatDependencies(configurationName).doesNotContain(MODDING_COMPILE_DEPENDENCIES);
         assertThatDependencies(configurationName).doesNotContain(MODDING_RUNTIME_ONLY_DEPENDENCIES);