{
  lib,
  config,
  ...
}:
let
  cfg = config.programs.nh;
in
{
  config.programs.nh = {
    enable = true;
    clean.enable = true;
    clean.extraArgs = "--keep-since 4d --keep 3";
    flake = "/home/alex/src/nixos-config";
  };

  config.nix.gc.automatic = lib.mkIf cfg.enable (lib.mkForce false);
  config.environment = lib.mkIf cfg.enable {
    variables = lib.mkIf (cfg.flake != null) {
      NH_FLAKE = cfg.flake;
    };
  };
}