anchor.diff:  { stdenv
   , fetchTritonPatch
   , fetchurl
  +, lib
   , nasm
   
   , libsndfile
  
positive.code:     "--with-fileio=${boolString (libsndfile != null) "sndfile" "lame"}"
    ];
  
    meta = with stdenv.lib; {
      description = "A high quality MPEG Audio Layer III (MP3) encoder";
      homepage = http://lame.sourceforge.net;
      license = licenses.lgpl2;
  
negative.code:       "sndfile"
      else
        "lame";
  
    channel = "3.99";
    version = "${channel}.5";
  in
  stdenv.mkDerivation rec {
    name = "lame-${version}";
  
    src = fetchurl {
      url = "mirror://sourceforge/lame/lame/${channel}/${name}.tar.gz";
      sha256 = "24346b4158e4af3bd9f2e194bb23eb473c75fb7377011523353196b19b9a23ff";
    };
  
    patches = [
  