private final ArtifactType jar;
        private final ArtifactType classpathJar;
        private final ArtifactType modularJar;
        private final ArtifactType processor;
        private final ArtifactType classpathProcessor;
        private final ArtifactType modularProcessor;
        private final Set<String> needsDerive;
        private final ArrayDeque<ArtifactType> stack;