{ runCommand, python3, coreutils }:
# Write the references of `path' to a file, in order of how "popular" each
# reference is. Nix 2 only.
path: runCommand "closure-paths"
{
  exportReferencesGraph.graph = path;
  __structuredAttrs = true;
  preferLocalBuild = true;
  nativeBuildInputs = [ coreutils python3 ];
}
''
  python3 ${./closure-graph.py} "$NIX_ATTRS_JSON_FILE" graph > ''${outputs[out]}
''
