anchor.diff:        description = "Communicate with a smart card using PC/SC";
         license = lib.licenses.gpl2Plus;
         maintainers = with maintainers; [ abbradar ];
  +      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.pcscperl.x86_64-darwin
       };
     };
   
  
positive.code:       description = "A LWP::UserAgent suitable for simulating and testing network calls";
        license = with lib.licenses; [ artistic1 gpl1Plus ];
        homepage = "https://github.com/karenetheridge/Test-LWP-UserAgent";
      };
    };
  
  
negative.code:       description = "MessagePack serializing/deserializing";
        license = with lib.licenses; [ artistic1 gpl1Plus ];
        maintainers = [ maintainers.sgo ];
        broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.DataMessagePack.x86_64-darwin
      };
    };
  
  