anchor.diff:  
       # Do an exit() instead of _exit().  This is nice for gcov.
       # Upstream also seems to do this.
  -    ./exit.patch    
  +    ./exit.patch
     ];
  -  
  +
     buildInputs = [x11 SDL mesa openal];
   
     # Fix building on GCC 4.6.
  
positive.code:     installFlags="COPYDIR=$out"
    '';
  
    meta.broken = true;
    
  }
  
negative.code: { lib, stdenv, fetchurl, x11, SDL, mesa, openal }:
  
  stdenv.mkDerivation {
    name = "ioquake3-1.36";
  
    src = fetchurl {
      url = http://ioquake3.org/files/1.36/ioquake3-1.36.tar.bz2; # calls itself "1.34-rc3"
      sha256 = "008vah60z0n9h1qp373xbqvhwfbyywbbhd1np0h0yw66g0qzchzv";
    };
  
    patchFlags = "-p0";
  
    patches = [
      # Fix for compiling on gcc 4.2.
      (fetchurl {
  