anchor.diff:          source = pkgs.runCommand "empty" {} "ensureDir $out";
           target = "/nix/store";
         }
  -      { # Another quick hack: the kernel needs a systemConfig
  -        # parameter in menu.lst, but the system config depends on
  -        # menu.lst.  Break the cyclic dependency by having a /system
  -        # symlink on the CD, and having menu.lst refer to /system.
  -        source = pkgs.runCommand "system" {}
  -          "ln -s ${config.system.build.toplevel} $out";
  -        target = "/system";
  -      }
  -      { # Idem for the stage-2 init script.
  -        source = pkgs.runCommand "system" {}
  -          "ln -s ${config.system.build.bootStage2} $out";
  -        target = "/init";
  -      }
       ];
   
     # The Grub menu.
  
positive.code:       '';
      };
  
      isoImage.storeContents = pkgs.lib.mkOption {
        example = [pkgs.stdenv];
        description = ''
          This option lists additional derivations to be included in the
  
negative.code:       '';
      };
  
      isoImage.volumeID = mkOption {
        default = "NIXOS_BOOT_CD";
        description = ''
          Specifies the label or volume ID of the generated ISO image.
  