rec {
   version="2.2.1";
   name="cfdg-2.2.1";
   hash="1zf3cls5h4fnhdxhdkdwsm4pav6df1ljr9jwp26dbqa4z2q3r8p4";
   url="http://www.contextfreeart.org/download/ContextFreeSource2.2.1.tgz";
   advertisedUrl="http://www.contextfreeart.org/download/ContextFreeSource2.2.1.tgz";
  
  
}