anchor.diff:  
   
     ack = buildPerlPackage rec {
  -    name = "ack-1.92";
  +    name = "ack-2.02";
       src = fetchurl {
         url = "mirror://cpan/authors/id/P/PE/PETDANCE/${name}.tar.gz";
  -      sha256 = "8689156cb0639ff60adee47fc4b77e656cf0fc58e6c123ee6c481d9d48e99b88";
  +      sha256 = "de5560f2ce6334f3f83bef4ee942fdb09b792f05cf534fe67be3cb0431bf758f";
       };
       propagatedBuildInputs = [ FileNext ];
       meta = {
  
positive.code:       homepage = http://betterthangrep.com/;
        license = "free";  # Artistic 2.0
      };
    };
  
    AlgorithmAnnotate = buildPerlPackage {
  
negative.code:   };
  
    FileNext = buildPerlPackage rec {
      name = "File-Next-1.12";
      src = fetchurl {
        url = "mirror://cpan/authors/id/P/PE/PETDANCE/${name}.tar.gz";
        sha256 = "cc3afd8eaf6294aba93b8152a269cc36a9df707c6dc2c149aaa04dabd869e60a";
      };
    };
  
  