anchor.diff:        "naming"
         "peer"
         "resolver"
  +      "resolver/dns"
  +      "resolver/passthrough"
         "stats"
         "status"
         "tap"
  
positive.code:     subPackages = [
        "."
        "balancer"
        "codes"
        "connectivity"
        "credentials"
        "grpclb/grpc_lb_v1"
        "grpclb/grpc_lb_v1/messages"
        "grpclog"
  
negative.code:     date = "2017-11-23";
    };
  
    go-ipfs-cmdkit = buildFromGitHub {
      version = 3;
      rev = "f3631e8ddde711a7aefed041806902d907a1f9ae";
      owner  = "ipfs";
      repo   = "go-ipfs-cmdkit";
      sha256 = "0yav7n572glmwnzahksgz98yf4zaf5lhqlbijc4i0kidkzrdgx0y";
      date = "2017-11-20";
      propagatedBuildInputs = [
        go-ipfs-util
        sys
      ];
    };
  
    go-ipfs-util = buildFromGitHub {
      version = 3;
      rev = "ca91b45d2e776e6e066151f7b65a3984c87e9fbb";
  