nix-config/modules/nixos/core/nh.nix

{
  flake.modules.nixos.core = {
    config,
    userName,
    ...
  }: {
    programs.nh = {
      enable = true;

      clean = {
        enable = !config.nix.gc.automatic;
        dates = "weekly";
      };

      flake = "/home/${userName}/Projects/nixos-config";
    };
  };
}