depot/third_party/nixpkgs/pkgs/build-support/references-by-popularity/default.nix

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{ 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;
PATH = "${coreutils}/bin:${python3}/bin";
builder = builtins.toFile "builder"
''
. .attrs.sh
python3 ${./closure-graph.py} .attrs.json graph > ''${outputs[out]}
'';
}
""