anchor.diff:        purgeTimestamps = true;
         inherit name;
         url = "https://code.googlesource.com/google-api-go-client/+archive/${rev}.tar.gz";
  -      sha256 = "0nvwcjwgxm376azkmsa9gpk613sv2pq3mjhyqy6sxkxzldq22888";
  +      sha256 = "1ipa91whk7v1p0iil2m3p3jc825qggxssikyxwg9zaz4ak3vk8pd";
       };
       buildInputs = [
         appengine
  
positive.code: 
    net = buildFromGitHub {
      version = 3;
      rev = "a04bdaca5b32abe1c069418fb7088ae607de5bd0";
      date = "2017-10-04";
      owner = "golang";
      repo = "net";
      sha256 = "0lb04hdwcjaz8njn65k6awf3hcj1vqi8hb1pj8i6x2d3d7jzjgaz";
      goPackagePath = "golang.org/x/net";
      goPackageAliases = [
        "github.com/hashicorp/go.net"
  
negative.code:       templexxx_reedsolomon
        xor
      ];
      date = "2017-10-14";
    };
  
    gravitational_kingpin = buildFromGitHub {
  