anchor.diff:      repo = "client_golang";
       sha256 = "1fcrblwbbpf9xr0v1ad9hl3kclyk76djxxlyy2dg2w4hlbzfbj1w";
       propagatedBuildInputs = [
  -      goautoneg
         net
         protobuf
         prometheus_client_model
  
positive.code: 
    azure-storage-go = buildFromGitHub {
      version = 2;
      rev = "v0.1.0";
      owner  = "Azure";
      repo   = "azure-storage-go";
      sha256 = "1p6n6s9xhrbh67k0dkpd2ph598qmnlnaaayq6pdqwrh0q5pgwx6s";
  
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
  