anchor.diff:    };
   
     perlSQLAbstract = buildPerlPackage rec {
  -    name = "SQL-Abstract-1.50";
  +    name = "SQL-Abstract-1.51";
       src = fetchurl {
         url = "mirror://cpan/authors/id/M/MS/MSTROUT/${name}.tar.gz";
  -      sha256 = "0nyc16ynks4xqa442vycs8wy9xbs0q63wm4iik8ar1axr53lyyqb";
  +      sha256 = "1q77yfdrkadf738zvdgarkv0136zs2shz3fdmwaaf03bhvhcbap2";
       };
       propagatedBuildInputs = [
         perlTestDeep perlTestException perlTestWarn
  
positive.code:     propagatedBuildInputs = [perlMROCompat perlTestException perlListMoreUtils];
    };
  
    perlClassC3Componentised = buildPerlPackage {
      name = "Class-C3-Componentised-1.0003";
      src = fetchurl {
        url = mirror://cpan/authors/id/A/AS/ASH/Class-C3-Componentised-1.0003.tar.gz;
        sha256 = "0lbhzz18lfp2xa8h5cmhfnqbqzhvpx4jkvga9gzwiv9ppbdpzqdp";
      };
      propagatedBuildInputs = [perlClassC3 perlClassInspector perlTestException];
    };
  
    perlClassDataAccessor = buildPerlPackage {
  
negative.code:       perlClassInspector perlDBIxClass perlLinguaENInflectNumber
        perlClassUnload
      ];
      doCheck = false; # disabled for now, since some tests fail
    };
  
    perlDevelGlobalDestruction = buildPerlPackage rec {
  