anchor.diff:  
     ipfs = buildFromGitHub {
       version = 2;
  -    date = "2016-10-05";
  -    rev = "67a1b3e1bfe9d05478f15068f31cc6868f12a74f";
  +    date = "2016-10-10";
  +    rev = "edf2b52f7a15b1bf1224466b1366cba65adb4ecc";
       owner = "ipfs";
       repo = "go-ipfs";
  -    sha256 = "1kvd18078hk7lll0vv54sqc3gkiqqrlziam5060w0kx1gk2l1vwk";
  -    gxSha256 = "1rmczp9rg0i1dbnkxn8gv132q5b1p795siiamnr2bp9dcmp1k8wr";
  +    sha256 = "12y72v3cmfpx6i4pym327cbvi6ljq47bmy1hn4j5y31pv3s5yrh1";
  +    gxSha256 = "06kv7fsgkq83b3gr6ij77b8ascx3bk9fnhwjwmfif9m6sy7z4j2w";
       subPackages = [
         "cmd/ipfs"
         "cmd/ipfswatch"
  
positive.code: 
    gcloud-golang = buildFromGitHub {
      version = 2;
      date = "2016-10-07";
      rev = "5af4269f950e91e917bab77f1138139023c868c2";
      owner = "GoogleCloudPlatform";
      repo = "gcloud-golang";
      sha256 = "0z82ksxpyhw6k6j1vswb1x4an8hiz5w1grq1161w1gilla1p3s45";
      goPackagePath = "cloud.google.com/go";
      goPackageAliases = [
        "google.golang.org/cloud"
  
negative.code: 
    go-jose = buildFromGitHub {
      version = 2;
      rev = "v1.1.0";
      owner = "square";
      repo = "go-jose";
      sha256 = "0knnpf489rkn8w45dlf1i6vsqyc4hgn6mzca3kqjxgrvd7jc7nmj";
      goPackagePath = "gopkg.in/square/go-jose.v1";
      goPackageAliases = [
        "github.com/square/go-jose"
  