anchor.diff:      hike = g.hike_1_2_1;
       hoe = g.hoe_2_3_3;
       i18n = g.i18n_0_6_0;
  +    journey = g.journey_1_0_0;
       json = g.json_1_6_5;
       json_pure = g.json_pure_1_6_5;
  -    mail = g.mail_2_3_0;
  +    mail = g.mail_2_4_1;
       mime_types = g.mime_types_1_17_2;
       minitar = g.minitar_0_5_3;
       multi_json = g.multi_json_1_0_4;
  
positive.code: Also see http://rack.rubyforge.org.
  '';
        };
        name = ''rack-1.4.0'';
        requiredGems = [  ];
        sha256 = ''15mqryky86fhx0h3kiab5x1lamq62hq6kc3knl6v10p1az4zpcq9'';
      };
      rack_cache_1_1 = {
        basename = ''rack_cache'';
  
negative.code:     net_ssh = g.net_ssh_2_3_0;
      nix = g.nix_0_1_1;
      polyglot = g.polyglot_0_3_3;
      rack = g.rack_1_4_1;
      rack_cache = g.rack_cache_1_1;
      rack_ssl = g.rack_ssl_1_3_2;
      rack_test = g.rack_test_0_6_1;
      rails = g.rails_3_2_0;
      railties = g.railties_3_2_0;
      rake = g.rake_0_9_2_2;
      rb_fsevent = g.rb_fsevent_0_4_3_1;
      rdoc = g.rdoc_3_12;
  