anchor.diff:      version = 2;
       owner = "rjeczalik";
       repo = "notify";
  -    date = "2017-01-17";
  -    rev = "b8dab33f409f63a90858d0eff0da94ed1a692b66";
  -    sha256 = "0i0p65jm781hp1ygwyl8aa1djfhvfnmpi6l7w0ilkcawnvqx06rl";
  +    date = "2017-01-28";
  +    rev = "9d5aa0c3b735c3340018a4627446c3ea5a04a097";
  +    sha256 = "1s1jlh83yzvj9mdbbsx08b38kmzywcvsg2wvdxiga6960jfcs66q";
     };
   
     objx = buildFromGitHub {
  
positive.code: 
    grpc-gateway = buildFromGitHub {
      version = 2;
      rev = "cfee3c5f91d8b8b54b216781e246443bb73b1a8e";
      owner = "grpc-ecosystem";
      repo = "grpc-gateway";
      sha256 = "14r01l134kngcimlgw7jfr94d2ix313h7sbf4pd1vrlsng6sjv2p";
      propagatedBuildInputs = [
        glog
        grpc
        net
        protobuf
      ];
      date = "2017-01-25";
    };
  
  
  
negative.code: 
    docker = buildFromGitHub {
      version = 2;
      rev = "8820d0aec09a6b93c5d212f46611eb9c714c5317";
      owner = "docker";
      repo = "docker";
      sha256 = "146myz19c6sf4v7157fwvkb7wfzlk7lrfa8hqm89zp6cdwhvfx00";
      meta.useUnstable = true;
      date = "2017-01-29";
    };
  
    docker_for_runc = buildFromGitHub {
  