anchor.diff: -{ stdenv, fetchurl, x11, SDL, mesa, openal }:
  +{ 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 {
  
positive.code:     installFlags="COPYDIR=$out"
    '';
  
    meta.broken = true;
    
  }
  
negative.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.
  