anchor.diff:      };
       meta = {
         description = "Per object accessors";
  -      license = "perl";
  +      license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
       };
     };
   
  
positive.code:     propagatedBuildInputs = [ ListUtilsBy ModulePluggable ];
      meta = {
        description = "Color space conversions and named lookups";
        license = "perl";
      };
    };
  
  
negative.code:     };
      meta = {
        description = "Convert POD data to various other formats";
        license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
      };
    };
  
  