anchor.diff:      };
       meta = {
         description = "Perl interface to PARI";
  -      license = with lib.licenses; [ artistic1 gpl1Plus gpl2 ];
  +      license = with lib.licenses; [ artistic1 gpl1Plus gpl2Only ];
       };
     };
   
  
positive.code:     meta = {
        description = "Dynamically create Perl language bindings";
        homepage = "http://gtk2-perl.sourceforge.net";
        license = with lib.licenses; [ lgpl21 ];
      };
    };
  
  
negative.code:     meta = {
        description = "Search mailboxes for mail matching a regular expression";
        homepage = "https://github.com/coppit/grepmail";
        license = with lib.licenses; [ gpl2Only ];
        maintainers = with maintainers; [ romildo ];
      };
    };
  