anchor.diff:  
     go-mssqldb = buildFromGitHub {
       version = 2;
  -    rev = "8e6115d5172422909579b49fd1fe0f7591416e4b";
  +    rev = "e3bd523cf238e14637d0e028becc25651098a138";
       owner = "denisenkom";
       repo = "go-mssqldb";
  -    sha256 = "0rl3p4bhsc4k93badjfzp98cdgd0bh4crylnsha64fz9p3a2abaf";
  -    date = "2017-04-12";
  +    sha256 = "025n6h2dsknpp3jban8j6ad4gccy7k1yw0cv7r0dkxabvcxxinps";
  +    date = "2017-04-23";
       buildInputs = [
         crypto
         net
  
positive.code:   };
  
    datadog-go = buildFromGitHub {
      version = 1;
      rev = "1.0.0";
      owner = "DataDog";
      repo = "datadog-go";
      sha256 = "13kjgqx5bs187fapqiirsaig950n2is0a35y2b7ap07dazxxxh3m";
    };
  
    dbus = buildFromGitHub {
  
negative.code: 
    go-github = buildFromGitHub {
      version = 2;
      date = "2017-04-21";
      rev = "2966f2579cd93bc62410f55ba6830b3925e7629d";
      owner = "google";
      repo = "go-github";
      sha256 = "0f7li1idw54w0fgrl9lman45dsmfa8rl3krlf05nnnd3ki4v1s9p";
      buildInputs = [
        appengine
        oauth2
  