file('merge.txt').text == 'p1.zip,p2.zip'
    }

    private void withSubprojects(String... subprojects) {
        subprojects.each {
            createDir it
            settingsFile "include '$it'\n"
        }
    }

    private void withZipArtifactProducingSubprojects(String... subprojects) {
        withSubprojects subprojects
        taskTypeWithOutputFileProperty()
        buildFile '''