*
     * Use attribute matching to choose a single variant when the target component has variants,
     * otherwise revert to legacy selection of target configurations.
     */
    @Override

                getArtifacts()
            );
            return new GraphVariantSelectionResult(Collections.singletonList(selected), true);
        }

        // Fallback to legacy variant selection for target components that don't support attribute matching.
        VariantGraphResolveState selected = variantSelector.selectLegacyVariant(consumerAttributes, targetComponentState, consumerSchema, variantSelector.getFailureHandler());

 *
 * <ul>
 *   <li>SafeAtomicHelper: uses AtomicReferenceFieldsUpdaters to implement synchronization
 *   <li>SynchronizedHelper: uses {@code synchronized} blocks for synchronization
 * </ul>
 *
 * To force selection of our fallback strategies we load {@link AbstractFuture} (and all of {@code
 * com.google.common.util.concurrent}) in degenerate class loaders which make certain platform

import org.gradle.execution.ProjectConfigurer;
import org.gradle.execution.TaskNameResolver;
import org.gradle.execution.TaskPathProjectEvaluator;
import org.gradle.execution.TaskSelector;
import org.gradle.execution.selection.DefaultBuildTaskSelector;
import org.gradle.initialization.BuildOptionBuildOperationProgressEventsEmitter;
import org.gradle.initialization.exception.DefaultExceptionAnalyser;

    private final ConcurrentMap<ModuleConfigurationMetadata, DefaultConfigurationGraphResolveState> variants = new ConcurrentHashMap<>();

    // The variants to use for variant selection during graph resolution
    private final Lazy<List<? extends VariantGraphResolveState>> allVariantsForGraphResolution;

    // The public view of all selectable variants of this component

		}

		close(handlerSyncReadyCh)
		logger.V(3).Info("Handlers synced")
	}
	if !cc.ComponentConfig.DelayCacheUntilActive || cc.LeaderElection == nil {
		startInformersAndWaitForSync(ctx)
	}
	// If leader election is enabled, runCommand via LeaderElector until done and exit.
	if cc.LeaderElection != nil {
		cc.LeaderElection.Callbacks = leaderelection.LeaderCallbacks{
			OnStartedLeading: func(ctx context.Context) {

import org.gradle.execution.plan.LocalTaskNodeExecutor;
import org.gradle.execution.plan.NodeExecutor;
import org.gradle.execution.plan.PlanExecutor;
import org.gradle.execution.plan.WorkNodeExecutor;
import org.gradle.execution.selection.BuildTaskSelector;
import org.gradle.execution.taskgraph.DefaultTaskExecutionGraph;
import org.gradle.execution.taskgraph.TaskExecutionGraphInternal;
import org.gradle.execution.taskgraph.TaskListenerInternal;

// In any failure to parse given object, it returns error.
type AttrFunc func(obj runtime.Object) (labels.Set, fields.Set, error)

// FieldMutationFunc allows the mutation of the field selection fields.  It is mutating to
// avoid the extra allocation on this common path
type FieldMutationFunc func(obj runtime.Object, fieldSet fields.Set) error

        when:
        run ':a:checkRelease'

        then:
        result.assertTasksExecuted(':b:barJar', ':a:checkRelease')
    }

    def "explicit configuration selection should take precedence"() {
        given:
        createDirs("a", "b")
        file('settings.gradle') << "include 'a', 'b'"
        buildFile << """
            $typeDefs

            project(':a') {

        where:
        changeDesc                                   | changeArg
        "a new external dependency"                  | "-DexternalDependency=true"
        "changing selection reasons"                 | "-DselectionReason=changed"
        "changing project library variant metadata"  | "-DprojectLibAttrValue=new-value"
        "changing included library variant metadata" | "-DcompositeLibAttrValue=new-value"