anchor.diff:      version = 3;
       owner = "minio";
       repo = "mc";
  -    rev = "61f2595852e515553b61589c4ec37144cc590825";
  -    sha256 = "0hkl65bbj9b2ijh8c46rqjh5r9z21z3m1vgwzg9w0l26ac8bqqdc";
  +    rev = "398bac82d9c503d94c9c07e95b43ff3bd2ce4047";
  +    sha256 = "1fh7c8nzbr77fz8dgs81vxjswyxd08ymgh34vz0656j76wm1c0gh";
       propagatedBuildInputs = [
         cli_minio
         color
  
positive.code:     version = 3;
      owner = "rs";
      repo = "cors";
      date = "2017-06-07";
      rev = "138ae399523eae866342f6cc690f309431c6a0b9";
      sha256 = "00s03f23r6ddnr10mz67f6hc29ia35fg3anmmmas73x30l09n9rh";
      propagatedBuildInputs = [
        net
        xhandler
  
negative.code: 
    grpc = buildFromGitHub {
      version = 3;
      date = "2017-06-09";
      rev = "84158ac547c2e121582f5f37458e693e339f099b";
      owner = "grpc";
      repo = "grpc-go";
      sha256 = "0b5k7drmsw5amf7nm7pdcqkq93nkqqm748p2yggd8hsc4hz3cf3w";
      goPackagePath = "google.golang.org/grpc";
      goPackageAliases = [
        "github.com/grpc/grpc-go"
  