{...}: {
  nix.settings.experimental-features = ["nix-command" "flakes"];
  nix.gc = {
    automatic = true;
    options = "--delete-older-than 30d";
  };
  nix.optimise = {
    automatic = true;
    dates = ["05:00"];
  };
  nix.settings.trusted-users = ["@wheel"];
}