rec {
   version="4.4.2";
   name="xboard-4.4.2";
   hash="1ihg39nnwp90w410rzwxj9layadavz08gc9m2b1jg5z5c6ky28zp";
   url="http://ftp.gnu.org/gnu/xboard/xboard-${version}.tar.gz";
   advertisedUrl="http://ftp.gnu.org/gnu/xboard/xboard-4.4.2.tar.gz";
  
  
}