anchor.diff:  
     go4 = buildFromGitHub {
       version = 5;
  -    date = "2018-01-02";
  -    rev = "c3a8ba339e20006b054736f8eb9fc5e1d5fa6eab";
  +    date = "2018-01-03";
  +    rev = "fba789b7e39ba524b9e60c45c37a50fae63a2a09";
       owner = "camlistore";
       repo = "go4";
  -    sha256 = "1qqyxz1vligw1fqykxr8x3lg2rf1i2dsq3s1xk70ha146xsh6cld";
  +    sha256 = "12bgxy9aqczs32a9kcdj1ahdbf9smdwkpp15y2w23ccgikc5viyn";
       goPackagePath = "go4.org";
       goPackageAliases = [
         "github.com/camlistore/go4"
  
positive.code:     version = 5;
      owner = "libp2p";
      repo = "go-libp2p-peer";
      date = "2017-12-18";
      rev = "615df201ce47f4955abef7ee0f84da22f67ba36e";
      sha256 = "1gjwsc1p3xhzba1xf3gdrag0dbiz7bf6fhmchyy6qvdvvvb86645";
      propagatedBuildInputs = [
        base58
        go-ipfs-util
  
negative.code: 
    kubernetes-client-go = buildFromGitHub {
      version = 5;
      rev = "109fef42a850b1af9d332a4ba433f65436be66c7";
      owner  = "kubernetes";
      repo   = "client-go";
      sha256 = "1fvsc5sbxzrrcy6n75dm3k6mhpn8v31jmpsgdw4k667nyfq70wfi";
      goPackagePath = "k8s.io/client-go";
      propagatedBuildInputs = [
        diskv
  