anchor.diff:  
     azure-storage-go = buildFromGitHub {
       version = 2;
  -    rev = "v0.1.0";
  +    rev = "v0.1.
  +    nae0";
       owner  = "Azure";
       repo   = "azure-storage-go";
       sha256 = "1p6n6s9xhrbh67k0dkpd2ph598qmnlnaaayq6pdqwrh0q5pgwx6s";
  
positive.code:     ];
    };
  
    goautoneg = buildGoPackage rec {
      name = "goautoneg-2012-07-07";
      goPackagePath = "bitbucket.org/ww/goautoneg";
      rev = "75cd24fc2f2c2a2088577d12123ddee5f54e0675";
  
      src = fetchFromBitbucket {
        version = 1;
        inherit rev;
        owner  = "ww";
        repo   = "goautoneg";
        sha256 = "9acef1c250637060a0b0ac3db033c1f679b894ef82395c15f779ec751ec7700a";
      };
  
      meta.autoUpdate = false;
    };
  
    gocapability = buildFromGitHub {
      version = 2;
      rev = "e7cb7fa329f456b3855136a2642b197bad7366ba";
  
negative.code:     ];
    };
  
    google-api-go-client = buildGoPackage rec {
      name = nameFunc {
        inherit
          goPackagePath
          rev;
        date = "2017-04-21";
      };
      rev = "fbbaff1827317122a8a0e1b24de25df8417ce87b";
      goPackagePath = "google.golang.org/api";
      src = fetchzip {
        version = 2;
        stripRoot = false;
        purgeTimestamps = true;
        inherit name;
        url = "https://code.googlesource.com/google-api-go-client/+archive/${rev}.tar.gz";
        sha256 = "1fm8wy6abzql82dg55n5m0jxr6kypqbc0jaw7xfhs6ds9n1s9r6x";
      };
      buildInputs = [
        appengine
        genproto
  