anchor.diff:      propagatedBuildInputs = [perlLWP perlYAML];
     };
   
  +  perlHTTPHeaderParserXS = buildPerlPackage rec {
  +    name = "HTTP-HeaderParser-XS-0.20";
  +    src = fetchurl {
  +      url = "mirror://cpan/authors/id/M/MA/MARKSMITH/${name}.tar.gz";
  +      sha256 = "1vs6sw431nnlnbdy6jii9vqlz30ndlfwdpdgm8a1m6fqngzhzq59";
  +    };
  +  };
  +
     perlHTTPRequestAsCGI = buildPerlPackage {
       name = "HTTP-Request-AsCGI-0.5";
       src = fetchurl {
  
positive.code:     ];
    };
  
    perlCatalystManual = buildPerlPackage rec {
      name = "Catalyst-Manual-5.7016";
      src = fetchurl {
  
negative.code:       url = mirror://cpan/authors/id/M/MA/MANU/Net-IP-1.25.tar.gz;
        sha256 = "1iv0ka6d8kp9iana6zn51sxbcmz2h3mbn6cd8pald36q5whf5mjc";
      };
    };
  
    perlNetServer = buildPerlPackage rec {
      name = "Net-Server-0.97";
      src = fetchurl {
        url = "mirror://cpan/authors/id/R/RH/RHANDOM/${name}.tar.gz";
        sha256 = "13vhv13w06g6h6iqx440q1h6hwj0kpjdxcc3fl9crkwg5glygg2f";
      };
      doCheck = false; # seems to hang waiting for connections
    };
  
    perlObjectSignature = buildPerlPackage {
  