anchor.diff:    src = fetchurl {
       url = "http://download.icu-project.org/files/${pname}/${version}/${pname}-"
         + (stdenv.lib.replaceChars ["."] ["_"] version) + "-src.tgz";
  -    sha256 = "14l0kl17nirc34frcybzg0snknaks23abhdxkmsqg3k9sil5wk9g";
  +    sha256 = "0a4sg9w054640zncb13lhrcjqn7yg1qilwd1mczc4w60maslz9vg";
     };
   
     makeFlags = stdenv.lib.optionalString stdenv.isDarwin
  
positive.code: { stdenv, fetchurl, fixDarwinDylibNames }:
  
  let
  
    pname = "icu4c";
    version = "52.1";
  in
  stdenv.mkDerivation {
    name = pname + "-" + version;
  
negative.code: 
    enableParallelBuilding = true;
  
    meta = with stdenv.lib; {
      description = "Unicode and globalization support library";
      homepage = http://site.icu-project.org/;
      maintainers = with maintainers; [ raskin urkud ];
      platforms = platforms.all;
    };
  }
  