mavenRepo.module("libs", "producer", "1.0").publish()

        createDirs("producer", "consumer")
        settingsFile """
            include 'producer', 'consumer'
        """

        setupBuildWithColorTransformThatTakesUpstreamArtifacts()
        buildFile """
            allprojects {
                repositories {
                    maven { url = "$mavenRepo.uri" }
                }
            }
            dependencies {

     * By default the 'blue' variant will contain a single file, and the transform will produce a single 'green' file from this.
     */
    void setupBuildWithColorTransformThatTakesUpstreamArtifacts() {
        setupBuildWithColorTransform()
        buildFile << """
            abstract class MakeGreen implements TransformAction<TransformParameters.None> {

        def configurationCache = newConfigurationCacheFixture()

        createDirs("a", "b", "c")
        settingsFile << """
            include 'a', 'b', 'c'
        """
        setupBuildWithColorTransformThatTakesUpstreamArtifacts()
        buildFile << """
            dependencies {
                implementation project(':a')
            }
            project(':a') {
                dependencies {

        createDirs("producer", "consumer")
        settingsFile << """
            include 'producer', 'consumer'
        """

        setupBuildWithColorTransformThatTakesUpstreamArtifacts()
        setupExternalDependency()

        buildFile << """
            allprojects {
                dependencies {
                    registerTransform(MakeGreen) {