anchor.diff:      version = 5;
       owner = "nicolai86";
       repo = "scaleway-sdk";
  -    rev = "eb16cd44fc58b2b432fb1491a9615deddd0fbdf8";
  -    sha256 = "0rz687vn90408kkmr4ygx9dnr8yibkn7sb3fdih08yr7zhlnr7v8";
  +    rev = "34a027fdee9e6debfb6d0182f75f43ba24107edf";
  +    sha256 = "1v61q0jpil3gya1113p1gky9mhn789sjhl1sdim989w1vbp9q40s";
       meta.useUnstable = true;
  -    date = "2017-12-09";
  +    date = "2018-01-15";
       goPackageAliases = [
         "github.com/nicolai86/scaleway-sdk/api"
       ];
  
positive.code:     date = "2017-02-06";
    };
  
    go-smux-multistream = buildFromGitHub {
      version = 3;
      rev = "afa6825376c14a0462fd420a7d4b4d157c937a42";
  
negative.code:   };
  
    go-libp2p-nat = buildFromGitHub {
      version = 5;
      owner = "libp2p";
      repo = "go-libp2p-nat";
      date = "2018-01-20";
      rev = "86b803fbe8671892ac32b155f0ea582da102bd36";
      sha256 = "1039mpcbz02cjpiy37kgjh2p4pfwsgsjpdll9mmcmbg6nqs5wa5p";
      propagatedBuildInputs = [
        goprocess
        go-log
  