anchor.diff:  
     go-hdb = buildFromGitHub {
       version = 3;
  -    rev = "v0.9.4";
  +    rev = "v0.9.5";
       owner  = "SAP";
       repo   = "go-hdb";
  -    sha256 = "0dqnj6bj7lf17f4rk58yrmyh78h91iphx8mlwfnv8i4zj8ndnd02";
  +    sha256 = "0hzxm32b7r50sjpd1x33xk24gjqqk6q67j8b7kyw0hlnk6pw1lki";
       propagatedBuildInputs = [
         text
       ];
  
positive.code: 
    teleport = buildFromGitHub {
      version = 3;
      rev = "v2.3.5";
      owner = "gravitational";
      repo = "teleport";
      sha256 = "7f8aa8819d26d371aa75aee0074580334dc6c517aae45021ffc487384e5692a9";
      nativeBuildInputs = [
        pkgs.protobuf-cpp
        protobuf.bin
  
negative.code:     version = 3;
      owner = "denverdino";
      repo = "aliyungo";
      rev = "d7c7e038ca2b9ffd3c2b5525d9eae4a31b0704c7";
      date = "2017-12-07";
      sha256 = "025bsr786m5kahk56ya2cgrpaqagr5m4pd27zy7ygv5hzzq3w22z";
      propagatedBuildInputs = [
        protobuf
      ];
  