anchor.diff:           it possible to use output from GNU Parallel as input for other
            programs.
         '';
  -
       homepage = http://www.gnu.org/software/parallel/;
  -
       license = licenses.gpl3Plus;
  -
       platforms = platforms.all;
       maintainers = with maintainers; [ pSub ];
     };
  
positive.code: 
    meta = with stdenv.lib; {
      description = "Shell tool for executing jobs in parallel";
  
      longDescription =
        '' GNU Parallel is a shell tool for executing jobs in parallel.  A job
           is typically a single command or a small script that has to be run
  
negative.code: { fetchurl, stdenv, perl }:
  
  stdenv.mkDerivation rec {
    name = "parallel-20150522";
  
    src = fetchurl {
      url = "mirror://gnu/parallel/${name}.tar.bz2";
      sha256 = "01pkckrad3d2i7mkw98zxymp22rsngyjknhh18i4m6hq82bijjjc";
    };
  
    patchPhase =
  