notRequested()
                        byAncestor()
                        byReason("didn't match versions 18, 17")
                    }
                    noArtifacts()
                }
            }
        }

    }

    def "should fail and include path to unresolvable strict version range"() {
        given:
        repository {

                    byConflictResolution("between versions 2.0 and 1.2")
                    module("test:projectB:2.1.5")
                }
                project(":subproject", "test:subproject:") {
                    noArtifacts()
                    module("test:projectA:2.0")
                }
            }
        }
    }

    void canHaveCycleInDependencyGraph() {
        given:
        resolve.prepare("compile")

            deps << edge
            return edge
        }

        /**
         * Specifies that this node has no artifacts associated with it.
         */
        NodeBuilder noArtifacts() {
            implicitArtifact = false
            return this
        }

        /**
         * Specifies an artifact for this node. A default is assumed when none specified
         */

        run(":checkDeps")

        then:
        resolve.expectGraph {
            root(":", ":depsub:") {
                module("org:platform:1.0") {
                    noArtifacts()
                }
            }
        }
    }

        List<String> trail = new ArrayList<>(1);
        trail.add(result.getId());
        result.setDependencyTrail(trail);

        return result;
    }

    public static void toArtifacts(
            Collection<org.apache.maven.artifact.Artifact> artifacts,
            Collection<? extends DependencyNode> nodes,
            List<String> trail,
            DependencyFilter filter) {

        InternalSession session = InternalSession.from(request.getSession());
        try {
            InstallRequest installRequest =
                    new InstallRequest().setArtifacts(session.toArtifacts(request.getArtifacts()));

            InstallResult result = repositorySystem.install(session.getSession(), installRequest);
        } catch (InstallationException e) {

        try {
            DeployRequest deployRequest = new DeployRequest()
                    .setRepository(session.toRepository(repository))
                    .setArtifacts(session.toArtifacts(artifacts));

            DeployResult result = session.getRepositorySystem().deploy(session.getSession(), deployRequest);
        } catch (DeploymentException e) {

    org.eclipse.aether.graph.Dependency toDependency(DependencyCoordinate dependency, boolean managed);

    List<org.eclipse.aether.artifact.Artifact> toArtifacts(Collection<Artifact> artifacts);

    org.eclipse.aether.artifact.Artifact toArtifact(Artifact artifact);

    org.eclipse.aether.artifact.Artifact toArtifact(ArtifactCoordinate coord);

    }

    private List<org.eclipse.aether.artifact.Artifact> toAetherArtifacts(final List<Artifact> pluginArtifacts) {
        return new ArrayList<>(RepositoryUtils.toArtifacts(pluginArtifacts));
    }

        Set<Artifact> artifacts = new LinkedHashSet<>();
        if (result.getDependencyGraph() != null
                && !result.getDependencyGraph().getChildren().isEmpty()) {
            RepositoryUtils.toArtifacts(
                    artifacts,
                    result.getDependencyGraph().getChildren(),
                    Collections.singletonList(project.getArtifact().getId()),
                    collectionFilter);