.desc(
                        "Resume reactor from the last failed project, using the resume.properties file in the build directory")
                .build());
        options.addOption(Option.builder(RESUME_FROM)
                .longOpt("resume-from")
                .hasArg()
                .desc("Resume reactor from specified project")
                .build());

The purpose of running most builds though is to process some new changes.
The structure of the software being built (how many modules are there, how independent are its parts etc.), and the nature of the changes themselves ("big refactor in the core of the system" vs. "small change to a unit test" etc.) strongly influence the performance gains delivered by the build cache.

                // whereas console failure logging based on the _thrown exception_ happens up outside session scope. It would be better to refactor so that a result can be returned from here
                throw UncheckedException.throwAsUncheckedException(t);
            } else {

                // whereas console failure logging based on the _thrown exception_ happens up outside session scope. It would be better to refactor so that a result can be returned from here
                throw UncheckedException.throwAsUncheckedException(t);
            } else {

                    findOptionalProjectBySelector(projects, baseDirectory, selector);
            if (!optSelectedProject.isPresent()) {
                String message = "Could not find the selected project in the reactor: " + selector;
                throw new MavenExecutionException(message, request.getPom());
            }

            MavenProject selectedProject = optSelectedProject.get();

	rootCmd.SetOut(&out)
	rootCmd.SetErr(&err)
	// istioctl will overwrite logs which we don't want.
	// It happens to do this via PersistentPreRunE, which we can disable.
	// We add an additional check in case someone refactors this away, to ensure we don't wipe out non-logging code.
	if fmt.Sprintf("%p", rootCmd.PersistentPreRunE) != fmt.Sprintf("%p", cmd.ConfigureLogging) {
		log.Fatalf("istioctl PersistentPreRunE is not configuring logging")
	}

 * @see org.apache.maven.api.services.DependencyResolver
 */
@Experimental
@Immutable
public enum DependencyScope {

    /**
     * None. Allows you to declare dependencies (for example to alter reactor build order) but in reality dependencies
     * in this scope are not part of any path scope.
     */
    NONE("none", false),

    /**

	file := filepath.Join(dir, "main.go")
	if err := ioutil.WriteFile(file, []byte(prog), 0655); err != nil {
		log.Fatalf("Write error %v", err)
	}

	// Using a timeout of 1 minute in case other factors might slow
	// down the start of "go run". See https://golang.org/issue/34836.
	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
	defer cancel()

	cmd := exec.CommandContext(ctx, "go", "run", file)

import org.apache.maven.artifact.repository.MavenArtifactRepository;
import org.apache.maven.artifact.repository.layout.ArtifactRepositoryLayout;

/**
 * Delegating local artifact repository chains the reactor, IDE workspace
 * and user local repository.
 */
@Deprecated
public class DelegatingLocalArtifactRepository extends MavenArtifactRepository {
    private LocalArtifactRepository buildReactor;

/**
 * An implementation of a workspace reader that knows how to search the Maven reactor for artifacts, either as packaged
 * jar if it has been built, or only compile output directory if packaging hasn't happened yet.
 *
 */
@Named(ReactorReader.HINT)
@SessionScoped
class ReactorReader implements MavenWorkspaceReader {
    public static final String HINT = "reactor";

    public static final String PROJECT_LOCAL_REPO = "project-local-repo";