anchor.diff:  
     net = buildFromGitHub {
       version = 2;
  -    rev = "4bb47a1098b37d69980d96237e2ae4ff56bb5a95";
  -    date = "2016-10-31";
  +    rev = "55a3084c9119aeb9ba2437d595b0a7e9cb635da9";
  +    date = "2016-11-04";
       owner  = "golang";
       repo   = "net";
  -    sha256 = "0v0x19f6ppvdd5kz41sjq0gq620rd12aha06xa86rsydl7018f6g";
  +    sha256 = "18rycpsa3hz1s1idfm5dydqpknbvfxkbzq050ba6d2fhqribsgjk";
       goPackagePath = "golang.org/x/net";
       goPackageAliases = [
         "github.com/hashicorp/go.net"
  
positive.code: 
    go-flags = buildFromGitHub {
      version = 2;
      date = "2016-10-25";
      rev = "0648c820cd4e564706597268ae2d2c7d9e6900c6";
      owner  = "jessevdk";
      repo   = "go-flags";
      sha256 = "1bkaq9rn3s7g39ca9mzz6p2k8r2rdwpjx0y81kqvphsl0m9lfqcy";
    };
  
    go-getter = buildFromGitHub {
  
negative.code:     version = 2;
      owner = "minio";
      repo = "mc";
      rev = "e14dcccd37928f5b71d6b1f00bb93c79ed8160ab";
      sha256 = "1vq3cqx30i2bs7h8ka6liy3l14cwgm1a34vbzhv5fpw09vg1g85m";
      propagatedBuildInputs = [
        cli_minio
        color
  