{
  config,
  lib,
  pkgs,
  ...
}:
# Python tools for the primary user's shell environment.
let
  user = config.user.name;
in
{
  options.modules.shell.python.enable =
    lib.mkEnableOption "Python tools for the primary user's shell environment";

  config = lib.mkIf config.modules.shell.python.enable {
    registry.env.${config.networking.hostName}.PYTHON_TOOLCHAIN_ROOT = "${pkgs.python3}";

    home-manager.users.${user}.home.packages = [ pkgs.python3 ];
  };
}