anchor.diff:    perlObjectSignature = import ../development/perl-modules/generic perl {
       name = "Object-Signature-1.05";
       src = fetchurl {
  -      url = http://search.cpan.org/CPAN/authors/id/A/AD/ADAMK/Object-Signature-1.05.tar.gz;
  +      url = mirror://cpan/authors/id/A/AD/ADAMK/Object-Signature-1.05.tar.gz;
         sha256 = "10k9j18jpb16brv0hs7592r7hx877290pafb8gnk6ydy7hcq9r2j";
       };
     };
  
positive.code:   perlConfigAny = import ../development/perl-modules/generic perl {
      name = "Config-Any-0.14";
      src = fetchurl {
        url = http://search.cpan.org/CPAN/authors/id/B/BR/BRICAS/Config-Any-0.14.tar.gz;
        sha256 = "1vlr4w2m88figac5pblg6ppzrm11x2pm7r05n48s84cp4mizhim1";
      };
    };
  
negative.code:   perlDBIxClass = import ../development/perl-modules/generic perl {
      name = "DBIx-Class-0.08099_04";
      src = fetchurl {
        url = mirror://cpan/authors/id/L/LS/LSAUNDERS/DBIx-Class-0.08099_04.tar.gz;
        sha256 = "0ik5bjsrlpz0sbwrrwiyjiga17rh9jb09gflqif5h59gq9y7kcyf";
      };
      propagatedBuildInputs = [
  