anchor.diff:      };
   
     };
  +  */
   
     config = {
       environment.systemPackages =
  
positive.code:     inherit (config.system) nixosVersion nixosCodeName;
    };
  
    nixos-gui = pkgs.xulrunnerWrapper {
      launcher = "nixos-gui";
      application = pkgs.stdenv.mkDerivation {
  
negative.code:       };
      };
    };
    */
  
  in
  
  {
    /*
    options = {
  
      installer.enableGraphicalTools = pkgs.lib.mkOption {
  