{pkgs, ...}: {
  # enable flakes
  nix = {
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 7d";
    };
    package = pkgs.nixFlakes;
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
    settings = {
      keep-outputs = true;
      keep-derivations = true;
    };
  };

  #direnv
  # programs.direnv.enable = true;
}