{...}: {
  nix = {
    extraOptions = ''
      experimental-features = nix-command flakes
    '';

    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 7d";
    };

    settings = {
      experimental-features = [
        "auto-allocate-uids"
        "flakes"
        "nix-command"
      ];

      trusted-users = ["root" "@wheel"];

      substituters = ["https://cache.nixos.org" "https://cache.garnix.io"];
      trusted-public-keys = ["cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g=" "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="];
    };
  };
}