anchor.diff:      meta = {
         description = "A storage class for Catalyst Authentication using DBIx::Class";
         license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
  +      platforms = stdenv.lib.platforms.linux;
       };
     };
   
  
positive.code:       homepage = https://github.com/rjbs/email-sender;
        description = "A library for sending email";
        license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
      };
    };
  
  
negative.code:     meta = {
        description = "Display a stack trace on the debug screen";
        license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
        platforms = stdenv.lib.platforms.linux;
      };
    };
  
  