{
  nixpkgs = {
    config = {
      allowUnfree = true;
      permittedInsecurePackages = [
        "electron-unwrapped-33.0.2"
      ];
    };
  };

  nix = {
    extraOptions = ''
      experimental-features = nix-command flakes
      keep-outputs = true
      keep-derivations = true
    '';
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 10d";
    };
  };
}