Gradle: multi-project dependency graph

dependency-report.gradle

task dependencyReport {
    doLast {
        def file = new File("project-dependencies.dot")
        file.delete()
        file << "digraph {\n"
        file << "splines=ortho\n"
        rootProject.childProjects.each { item ->
            def from = item.value
            from.configurations.compile.dependencies
                    .matching { it in ProjectDependency }
                    .each { to -> file << ("\"${from.name}\" -> \"${to.name}\"\n")}
        }
        file << "}\n"
    }
}