anchor.diff:      meta = {
         description = "Create MaxMind DB database files";
         license = with lib.licenses; [ artistic1 gpl1Plus ];
  +      broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.MaxMindDBWriter.x86_64-darwin
       };
     };
   
  
positive.code:     meta = {
        description = "A new and improved test harness with better Test2 integration";
        license = with lib.licenses; [ artistic1 gpl1Plus ];
      };
    };
  
  
negative.code:       url = "mirror://cpan/authors/id/M/MA/MARKSMITH/HTTP-HeaderParser-XS-0.20.tar.gz";
        sha256 = "1vs6sw431nnlnbdy6jii9vqlz30ndlfwdpdgm8a1m6fqngzhzq59";
      };
      meta.broken =
        stdenv.isi686 # loadable library and perl binaries are mismatched (got handshake key 0x7d40080, needed 0x7dc0080)
        || stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/perl534Packages.HTTPHeaderParserXS.x86_64-darwin
    };
  
    HTTPHeadersFast = buildPerlModule {
  