A shell.nix to develop for pygame

shell.nix

{
  nixpkgs ? fetchTarball {
    url = "https://github.com/NixOS/nixpkgs/archive/0590cd39f728e129122770c029970378a79d076a.tar.gz";
    sha256 = "1ia5kjykm9xmrpwbzhbaf4cpwi3yaxr7shl6amj8dajvgbyh2yh4";
  },
  pkgs ? import nixpkgs {
    config = { allowUnfree = true; };
  },
}:
let
  pythonWithPkgs = pkgs.python3.withPackages (python-pkgs: with python-pkgs; [
    pygame-gui
  ]);
in
pkgs.mkShellNoCC {
  packages = with pkgs; [
    uv
    jetbrains.pycharm

    (pkgs.callPackage ./sync.nix { })

    pythonWithPkgs
  ];

  shellHook = ''
    export VENV_DIR="$PWD/.venv"

    if [ ! -d "$VENV_DIR" ]; then
      ${pythonWithPkgs}/bin/python -m venv $VENV_DIR
    fi

    source $VENV_DIR/bin/activate

    export PYTHONPATH="${pythonWithPkgs}/lib/python3.13/site-packages:$PYTHONPATH"
  '';
}