anchor.diff:      rev = "03efcb870d84809319ea509714dd6d19a1498483";
       owner = "camlistore";
       repo = "go4";
  -    sha256 = "0zkmafigzr2whpdwal6zwkb9xzxv87qym92xs7nmriwrggqa3l6x";
  +    sha256 = "4ae6361927b65dcd2747c11d808dbd441b465be50468623db36bc1cb4277264f";
       goPackagePath = "go4.org";
       goPackageAliases = [ "github.com/camlistore/go4" ];
       buildInputs = [ gcloud-golang net ];
  
positive.code:     rev = "r3.3.4";
      owner  = "mongodb";
      repo   = "mongo-tools";
      sha256 = "0bqm4naz2a7mkxn4s9ji9j4k9y670ymhbyrm0401v327fhss8vks";
      buildInputs = [ crypto mgo go-flags gopass openssl tomb ];
  
      # Mongodb incorrectly names all of their binaries main
      # Let's work around this with our own installer
  
negative.code:     sha256 = "0q968aml9p5x49x70ay7myfg6ibggckir3gam5n6qydj6rviqpy7";
      goPackagePath = "gopkg.in/mgo.v2";
      goPackageAliases = [ "github.com/go-mgo/mgo" ];
      buildInputs = [ pkgs.cyrus-sasl tomb-v2 ];
    };
  
    missinggo = buildFromGitHub {
  