private void configureSourceSetDefaults(final JavaPluginConvention pluginConvention) { final Project project = pluginConvention.getProject(); final ProjectSourceSet projectSourceSet = project.getExtensions().getByType(ProjectSourceSet.class); pluginConvention .getSourceSets() .all( new Action<SourceSet>() { public void execute(final SourceSet sourceSet) { ConventionMapping outputConventionMapping = ((IConventionAware) sourceSet.getOutput()).getConventionMapping(); ConfigurationContainer configurations = project.getConfigurations(); Configuration compileConfiguration = configurations.findByName(sourceSet.getCompileConfigurationName()); if (compileConfiguration == null) { compileConfiguration = configurations.add(sourceSet.getCompileConfigurationName()); } compileConfiguration.setVisible(false); compileConfiguration.setDescription( String.format("Classpath for compiling the %s sources.", sourceSet.getName())); Configuration runtimeConfiguration = configurations.findByName(sourceSet.getRuntimeConfigurationName()); if (runtimeConfiguration == null) { runtimeConfiguration = configurations.add(sourceSet.getRuntimeConfigurationName()); } runtimeConfiguration.setVisible(false); runtimeConfiguration.extendsFrom(compileConfiguration); runtimeConfiguration.setDescription( String.format( "Classpath for running the compiled %s classes.", sourceSet.getName())); sourceSet.setCompileClasspath(compileConfiguration); sourceSet.setRuntimeClasspath(sourceSet.getOutput().plus(runtimeConfiguration)); outputConventionMapping.map( "classesDir", new Callable<Object>() { public Object call() throws Exception { String classesDirName = String.format("classes/%s", sourceSet.getName()); return new File(project.getBuildDir(), classesDirName); } }); outputConventionMapping.map( "resourcesDir", new Callable<Object>() { public Object call() throws Exception { String classesDirName = String.format("resources/%s", sourceSet.getName()); return new File(project.getBuildDir(), classesDirName); } }); sourceSet.getJava().srcDir(String.format("src/%s/java", sourceSet.getName())); sourceSet .getResources() .srcDir(String.format("src/%s/resources", sourceSet.getName())); sourceSet.compiledBy(sourceSet.getClassesTaskName()); FunctionalSourceSet functionalSourceSet = projectSourceSet.create(sourceSet.getName()); Classpath compileClasspath = new SourceSetCompileClasspath(sourceSet); DefaultJavaSourceSet javaSourceSet = instantiator.newInstance( DefaultJavaSourceSet.class, "java", sourceSet.getJava(), compileClasspath, functionalSourceSet); functionalSourceSet.add(javaSourceSet); ResourceSet resourceSet = instantiator.newInstance( DefaultResourceSet.class, "resources", sourceSet.getResources(), functionalSourceSet); functionalSourceSet.add(resourceSet); JvmBinaryContainer jvmBinaryContainer = project.getPlugins().getPlugin(JvmLanguagePlugin.class).getJvmBinaryContainer(); ClassDirectoryBinary binary = jvmBinaryContainer.create(sourceSet.getName(), ClassDirectoryBinary.class); ConventionMapping conventionMapping = new DslObject(binary).getConventionMapping(); conventionMapping.map( "classesDir", new Callable<File>() { public File call() throws Exception { return sourceSet.getOutput().getClassesDir(); } }); conventionMapping.map( "resourcesDir", new Callable<File>() { public File call() throws Exception { return sourceSet.getOutput().getResourcesDir(); } }); binary.getSource().add(javaSourceSet); binary.getSource().add(resourceSet); binary.getClassesTask().dependsOn(sourceSet.getOutput().getDirs()); } }); }