anchor.diff:        readOnlyRoot = true;
         # The label used to identify the installation CD.
         rootLabel = "NIXOS";
  -      initrd = {
  -        enableSplashScreen = pkgs.stdenv.system != "x86_64-linux";
  -      };
       };
       
       services = {
  
positive.code: rec {
  
    
    nixpkgsRel = "nixpkgs-0.11pre7861";
  
  
    configuration = {
  
negative.code:   # Get a recent copy of Nixpkgs.
    nixpkgsTarball = pkgs.fetchurl {
      url = configuration.installer.nixpkgsURL + "/" + nixpkgsRel + ".tar.bz2";
      md5 = "262eadc0c4d1d954cf0ac8b03a9edfef";
    };
  
  
  