{ pkgs }: let packages = builtins.attrValues { inherit (pkgs) pipenv pyright ; inherit (pkgs.python3Packages) black editorconfig flake8 isort pyflakes pylint pytest speedtest-cli ; }; in { inherit packages; devShell = pkgs.mkShell { inherit packages; name = "python-dev-shell"; shellHook = '' echo "🐍 Python dev environment" which python ''; description = "Python development shell"; }; }