anchor.diff:  
     go-ethereum = buildFromGitHub {
       version = 3;
  -    date = "2017-05-02";
  -    rev = "02a29060d2d51c34b7b458c2598ec71cc8f7a584";
  +    date = "2017-05-04";
  +    rev = "93832b633e1bfa4ec32a937f0cd9d90644c39c73";
       owner  = "ethereum";
       repo   = "go-ethereum";
  -    sha256 = "1c3icdlza45b258pjn8q0w3jiq6lg0iwy9sz5fj0wbggilbsb8p7";
  +    sha256 = "0xls5v57d6z90mjkplc817h841cjmy2g65djy28gsj1agv3r39cn";
       subPackages = [
         "crypto/sha3"
       ];
  
positive.code:   };
  
    lego = buildFromGitHub {
      version = 2;
      rev = "b1fd84c6ffc6896cfd64eca69775bc634d459702";
      owner = "xenolf";
      repo = "lego";
      sha256 = "1f0msaj5s89jfv6abxh2b1jwq1l58jqifjfhm0armzq3hmbvgbwy";
      buildInputs = [
        auroradnsclient
        aws-sdk-go
  
negative.code:     ];
      excludedPackages = "fstest";
      meta.useUnstable = true;
      date = "2017-05-02";
    };
  
    cupcake_rdb = buildFromGitHub {
  