{...}: {
  nix = {
    settings = {
      experimental-features = "nix-command flakes";
      auto-optimise-store = true;
      flake-registry = "";
    };
    channel.enable = false;
    optimise = {
      automatic = true;
      dates = ["03:45"];
    };
    gc = {
      automatic = true;
      dates = "19:00";
      persistent = true;
      options = "--delete-older-than 60d";
    };
  };
  time.timeZone = "America/Toronto";
}