anchor.diff:  
   assert printerSupport -> cups != null;
   
  -let rev = "42fb9f84e82268073a3838e6082783ba956ecc99"; in
  +let rev = "498b88a1da748a4a2b4dbd12c795ca87fee24bab"; in
   
   stdenv.mkDerivation rec {
     name = "freerdp-1.0pre${rev}";
  
positive.code:     cunit
    ] ++ stdenv.lib.optional printerSupport cups;
  
    postUnpack = ''
      sed -i 's@xf_GetWorkArea(xfi)@///xf_GetWorkArea(xfi)@' git-export/client/X11/xf_monitor.c
    '';
  
    cmakeFlags = [ "-DWITH_DIRECTFB=ON" "-DWITH_CUNIT=ON" ];
  
  
negative.code:   src = fetchgit {
      url = git://github.com/FreeRDP/FreeRDP.git;
      inherit rev;
      sha256 = "91ef562e96db483ada28236e524326a75b6942becce4fd2a65ace386186eccf7";
    };
  
    buildInputs = [
  