anchor.diff:  
     freeglut = callPackage ../development/libraries/freeglut { };
   
  -  freenect = callPackage ../development/libraries/freenect {
  -      inherit (xorg) libXi libXmu;
  -  };
  +  freenect = callPackage ../development/libraries/freenect { };
   
     freetype = callPackage ../development/libraries/freetype { };
   
  
positive.code:     inherit zip unzip zlib boehmgc gettext pkgconfig perl;
      inherit gtk;
      inherit (gnome) libart_lgpl;
      inherit (xorg) libX11 libXt libSM libICE libXtst libXi libXrender
        libXrandr xproto renderproto xextproto inputproto randrproto;
    });
  
    gnat = gnat45; # failed to make 4.6 or 4.8 build
  
negative.code: 
    xsnow = callPackage ../games/xsnow { };
  
    xsokoban = callPackage ../games/xsokoban { };
  
    zandronum = callPackage ../games/zandronum { };
    zandronum-server = callPackage ../games/zandronum/server.nix { };
  