anchor.diff: -{stdenv, fetchurl, SDL, zlib, mpeg2dec}:
  +{ stdenv, fetchurl, SDL, zlib, libmpeg2, libmad, libogg, libvorbis, flac, alsaLib }:
   
   stdenv.mkDerivation {
     name = "scummvm-1.2.1";
  
positive.code:     homepage = http://www.scummvm.org/;
    };
  }
  
negative.code:     sha256 = "029abzvpz85accwk7x79w255wr83gnkqg3yc5n6ryl28zg00z3j8";
    };
    
    buildInputs = [ SDL zlib libmpeg2 libmad libogg libvorbis flac alsaLib ];
  
    crossAttrs = {
      preConfigure = ''
  