import org.apache.maven.project.CycleDetectedException;
import org.apache.maven.project.DuplicateProjectException;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingException;
import org.apache.maven.project.collector.MultiModuleCollectionStrategy;
import org.apache.maven.project.collector.PomlessCollectionStrategy;
import org.apache.maven.project.collector.RequestPomCollectionStrategy;

 * build if those projects do not exist.
 */
public class ProjectActivation {

    /**
     * ProjectActivationSettings
     * @param selector the selector of a project, which can be the project directory, [groupId]:[artifactId] or :[artifactId]
     * @param activationSettings describes how/when to active or deactivate the project
     */

 * projects with longer dependency chains are built first. When projects have
 * the same weight, they are ordered by project ID for deterministic results.
 *
 * <p><b>Example:</b>
 * <p>Consider projects with dependencies: A → B → D, A → C → D
 * <ul>
 * <li>Project D: weight = 1 (no downstream dependencies)</li>
 * <li>Project B: weight = 2 (1 + max(D=1))</li>
 * <li>Project C: weight = 2 (1 + max(D=1))</li>

     * which must be able to run on a certain set of runtimes depends on another project,
     * that other project must support the runtimes of the project with requirements.
     *
     * @return A mapping of project paths to their computed runtimes, including
     * the specific projects that triggered each requirement.
     */
    private fun computeTargetRuntimes(projects: Map<String, ProjectInfo>): Map<String, Map<TargetRuntime, Set<String>>> {

        for (MavenProject project : projects) {
            request.setArtifact(new ProjectArtifact(project));
            request.setArtifactDependencies(project.getDependencyArtifacts());
            request.setManagedVersionMap(project.getManagedVersionMap());
            request.setRemoteRepositories(project.getRemoteArtifactRepositories());

     * from any repository but are present among the set of specified projects will not cause an exception. Instead,
     * those unresolved artifacts will be returned in the result set, allowing the caller to take special care of
     * artifacts that haven't been build yet.
     *

                plan.steps(project).forEach(step -> {
                    if (step.predecessors.stream().noneMatch(s -> s.project == project)) {
                        step.executeAfter(setup);
                    } else if (step.successors.stream().noneMatch(s -> s.project == project)) {
                        teardown.executeAfter(step);
                    }
                });

    BuildPlan() {
        this.projects = null;
    }

    public BuildPlan(Map<MavenProject, List<MavenProject>> projects) {
        this.projects = projects;
    }

    public Map<MavenProject, List<MavenProject>> getAllProjects() {
        return projects;
    }

    public Map<String, String> aliases() {
        return aliases;
    }

    public Stream<MavenProject> projects() {

        this.providerFactory = providerFactory;
    }

    @Override
    public void apply(Project project) {
        project.getRootProject().getPluginManager().apply(GlobalBuildInfoPlugin.class);
        Provider<BwcTaskThrottle> bwcTaskThrottleProvider = project.getGradle()
            .getSharedServices()

            throws DuplicateProjectException {
        Map<String, MavenProject> index = new LinkedHashMap<>();
        Map<String, List<File>> collisions = new LinkedHashMap<>();

        for (MavenProject project : projects) {
            String projectId = ArtifactUtils.key(project.getGroupId(), project.getArtifactId(), project.getVersion());