anchor.diff:    };
   
     go-querystring = buildFromGitHub {
  -    version = 1;
  -    date = "2016-03-10";
  -    rev = "9235644dd9e52eeae6fa48efd539fdc351a0af53";
  +    version = 2;
  +    date = "2017-01-11";
  +    rev = "53e6ce116135b80d037921a7fdd5138cf32d7a8a";
       owner  = "google";
       repo   = "go-querystring";
  -    sha256 = "0c0rmm98vz7sk7z6a1r07dp6jyb513cyr2y753sjpnyrc28xhdwg";
  +    sha256 = "1ibpx1hpqjkvcmn4gsz54k9p62sl1iac2kgb97spcl630nn4p0yj";
     };
   
     go-radix = buildFromGitHub {
  
positive.code: 
    go-memdb = buildFromGitHub {
      version = 2;
      date = "2017-01-07";
      rev = "d2d2b77acab85aa635614ac17ea865969f56009e";
      owner = "hashicorp";
      repo = "go-memdb";
      sha256 = "1hpbwbqsrp7pgxqly8w0c10j8h8ypkrq41mgxnyf303qx6l5an0h";
      propagatedBuildInputs = [
        go-immutable-radix
      ];
  
negative.code: 
    go4 = buildFromGitHub {
      version = 2;
      date = "2017-01-17";
      rev = "7ce08ca145dbe0e66a127c447b80ee7914f3e4f9";
      owner = "camlistore";
      repo = "go4";
      sha256 = "15slbkwz1pa9pzwim1a1yq6ihhkz7a5gchscp67zgcj6ivq0vy6w";
      goPackagePath = "go4.org";
      goPackageAliases = [ "github.com/camlistore/go4" ];
      buildInputs = [
  