{ ... }: {
  nix = {
    gc.automatic = false;

    settings = {
      auto-optimise-store = true;
      builders-use-substitutes = true;
      allowed-users = ["@wheel"];
      trusted-users = ["@wheel"];
      commit-lockfile-summary = "Update flake.lock";
      accept-flake-config = true;
      keep-derivations = true;
      keep-outputs = true;
      warn-dirty = false;
      sandbox = true;
      max-jobs = "auto";
      log-lines = 30;
      experimental-features = [ "nix-command" "flakes" ];
      substituters = [
        "https://cache.nixos.org"
      ];
      trusted-public-keys = [
        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
      ];
    };
  };

  nixpkgs = {
    config = {
      allowUnfree = true;
      allowBroken = true;
    };
  };
}