{
  python3,
  runCommand,
  git,
  nix,
  nix-prefetch-git,
}:

runCommand "update-python-libraries"
  {
    buildInputs = [
      nix
      nix-prefetch-git
      (python3.withPackages (
        ps: with ps; [
          packaging
          requests
          toolz
        ]
      ))
      git
    ];
  }
  ''
    cp ${./update-python-libraries.py} $out
    patchShebangs $out
    substituteInPlace $out --replace 'GIT = "git"' 'GIT = "${git}/bin/git"'
  ''