Gradle: multi-project dependency graph (supports depth > 2, supports gradle 4.4+)

dependency-report.gradle

// Inspired by https://gist.github.com/tzachz/419478fc8b009e953f5e5dc39f3f3a2a
// Task creates a .dot file with all inter-module dependencies
// Supports any depth of nested modules

task moduleDependencyReport {
    doLast {
        def file = new File("project-dependencies.dot")
        file.delete()
        file << "strict digraph {\n"
        file << "splines=ortho\n"
        printDeps(file, rootProject)
        file << "}\n"
    }
}

// recursively print dependencies to file and move on to child projects
def printDeps(file, project) {
    project.configurations
      .collectMany { it.allDependencies }
      .findAll { it instanceof ProjectDependency }
      .each { to -> file << ("\"${project.name}\" -> \"${to.name}\"\n")}

    project.childProjects.each { name, childProject -> printDeps(file, childProject) }
}