anchor.diff:  
     swag = buildFromGitHub {
       version = 6;
  -    rev = "v0.17.1";
  +    rev = "v0.18.0";
       owner = "go-openapi";
       repo = "swag";
  -    sha256 = "c911a082661ebf8a7310b337b06b056789d1d52d276cd90ba4229885f33e5eb5";
  +    sha256 = "5c6ea44cd87da0712f2df33f7e46e66f9550e17c1328064efa01e92952b84198";
       propagatedBuildInputs = [
         easyjson
         yaml_v2
  
positive.code: 
    gateway = buildFromGitHub {
      version = 6;
      date = "2018-04-07";
      rev = "cbcf4e3f3baee7952fc386c8b2534af4d267c875";
      owner  = "jackpal";
      repo   = "gateway";
      sha256 = "18vggnjfhbw7axjp0ikwj5vps532bkrwn0qxsdgpn6i5db0r0swc";
    };
  
    gax-go = buildFromGitHub {
      version = 6;
      rev = "1ef592c90f479e3ab30c6c2312e20e13881b7ea6";
      owner  = "googleapis";
      repo   = "gax-go";
      sha256 = "0jhkq9w76c9hf3344rgxxn20pwic76pmvwmky2r382lsjba3masq";
      propagatedBuildInputs = [
        grpc_for_gax-go
        net
      ];
      date = "2018-07-02";
    };
  
    genproto = buildFromGitHub {
      version = 6;
      date = "2018-10-16";
      rev = "94acd270e44e65579b9ee3cdab25034d33fed608";
      owner  = "google";
      repo   = "go-genproto";
      goPackagePath = "google.golang.org/genproto";
      sha256 = "dfa2de94c45a58ce4f8786e30743aa8a86bb25b782f8eec56a1c9ed0c3c16431";
      propagatedBuildInputs = [
        grpc
        net
  
negative.code: 
    go-ws-transport = buildFromGitHub {
      version = 6;
      rev = "v2.0.15";
      owner  = "libp2p";
      repo   = "go-ws-transport";
      sha256 = "/iZvRO5MjYysTissifs/Hxfnv2IPFK4CSy5X3lkG8jw=";
      propagatedBuildInputs = [
        go-libp2p-peer
        go-libp2p-transport
  