anchor.diff:    };
   
     oauth2 = buildFromGitHub {
  -    rev = "045497edb6234273d67dbc25da3f2ddbc4c4cacf";
  -    date = "2016-03-04";
  +    rev = "2897dcade18a126645f1368de827f1e613a60049";
  +    date = "2016-03-23";
       owner = "golang";
       repo = "oauth2";
  -    sha256 = "11x2ibdf86wrh1p7npxj7g9s5qhiprv4s5g8n2hbfs0dyky9q16r";
  +    sha256 = "1xdpzi5pgwqjkykj6j2gidmv2p6zq4gc92lr1qsm5lwb8pmd7w7q";
       goPackagePath = "golang.org/x/oauth2";
       goPackageAliases = [ "github.com/golang/oauth2" ];
       propagatedBuildInputs = [ net gcloud-golang-compute-metadata ];
  
positive.code:   };
  
    duo_api_golang = buildFromGitHub {
      date = "2015-06-09";
      rev = "16da9e74793f6d9b97b227a0696fe32bcdaecb42";
      owner = "duosecurity";
      repo = "duo_api_golang";
      sha256 = "1g7j0hjpfgk3py7sqkc2xw1lghn5zypyswkpygmsmjm4mxk9sxdm";
    };
  
    cache = buildFromGitHub {
  
negative.code:   };
  
    etcd = buildFromGitHub {
      rev = "v2.3.0";
      owner  = "coreos";
      repo   = "etcd";
      sha256 = "1cchlhsdbbqal145cvdiq7rzqqi131iq7z0r2hmzwx414k04wyn7";
    };
  
    etcd-client = buildFromGitHub {
      inherit (etcd) rev owner repo sha256;
      subPackages = [
        "client"
        "pkg/pathutil"
  