{
  withSystem,
  inputs,
  ...
}: {
  perSystem = {
    config,
    pkgs,
    ...
  }: {
    devShells.python = pkgs.mkShell {
      buildInputs = with pkgs; [
        (python3.withPackages (ps:
          with ps; [
            pip
            virtualenv
          ]))
      ];
    };
  };
}