anchor.diff:      installFlags="COPYDIR=$out"
     '';
   
  -  meta.broken = true;
  -  
  +  meta = {
  +    platforms = lib.platforms.linux;
  +    maintainers = [ lib.maintainers.eelco ];
  +  };
   }
  
positive.code: 
      # Do an exit() instead of _exit().  This is nice for gcov.
      # Upstream also seems to do this.
      ./exit.patch    
    ];
    
    buildInputs = [x11 SDL mesa openal];
  
    # Fix building on GCC 4.6.
  
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 {
  