anchor.diff:    };
   
     lego = buildFromGitHub {
  -    version = 2;
  -    rev = "b1fd84c6ffc6896cfd64eca69775bc634d459702";
  +    version = 3;
  +    rev = "25dd6b8fd7e4fc35baaee19f0ca61fbaa01bd2f3";
       owner = "xenolf";
       repo = "lego";
  -    sha256 = "1f0msaj5s89jfv6abxh2b1jwq1l58jqifjfhm0armzq3hmbvgbwy";
  +    sha256 = "17pw7l8iq4yzp4h4i8i8bqvsx20k7h5rd0x1b4dbmymrj8gal4wy";
       buildInputs = [
         auroradnsclient
         aws-sdk-go
  
positive.code:     version = 3;
      owner = "moby";
      repo = "moby";
      rev = "fa54c94b9d70c0582012aaef18991e1fb4dd59ba";
      date = "2017-05-02";
      sha256 = "0lg90s0vnym4cihr9jff1zcq2frdz9qra5mjlirll0j4vfy4f508";
      meta.useUnstable = true;
    };
  
  
negative.code: 
    aws-sdk-go = buildFromGitHub {
      version = 3;
      rev = "v1.8.20";
      owner  = "aws";
      repo   = "aws-sdk-go";
      sha256 = "0ywi5qaa793idic1a4q0d8lprz8yc1zr3gg1rd8k049xwj58606y";
      excludedPackages = "\\(awstesting\\|example\\)";
      buildInputs = [
        tools
  