anchor.diff:  
     gocql = buildFromGitHub {
       version = 3;
  -    rev = "33a5f3c1bcc2c421b3221c5858312afb141bf605";
  +    rev = "1762cce65eafd098045e30ef2b7df2c289740971";
       owner  = "gocql";
       repo   = "gocql";
  -    sha256 = "1z7klkh59jlcjicx6rgjvq74w1qmd2ch576l1iizzdm6x3ihfw57";
  +    sha256 = "1mz3qa7hhrdqcbas5xkjaf7p5jvd9awq7pfnmagynzb24l0llvp2";
       propagatedBuildInputs = [
         inf_v0
         snappy
         hailocab_go-hostpool
         net
       ];
  -    date = "2017-11-07";
  +    date = "2017-11-21";
     };
   
     godo = buildFromGitHub {
  
positive.code: 
    consul = buildFromGitHub rec {
      version = 3;
      rev = "v1.0.0";
      owner = "hashicorp";
      repo = "consul";
      sha256 = "1d7s7ihzss97rfd960b85f9c0wm8rwrwidmj83nav35q31j9dqmc";
  
      buildInputs = [
        armon_go-metrics
  
negative.code: 
    go-ethereum = buildFromGitHub {
      version = 3;
      rev = "v1.7.3";
      owner  = "ethereum";
      repo   = "go-ethereum";
      sha256 = "03a52n47gacc1z9f9z6lpvcs00bqz5iy2h6lhmw5zcbdlgm164vs";
      subPackages = [
        "crypto/sha3"
      ];
  