anchor.diff:      version = 3;
       owner = "ncw";
       repo = "rclone";
  -    date = "2017-11-14";
  -    rev = "4355f3fe97a86e3a2efe4b69d3ac04b13e4e14bd";
  -    sha256 = "0mwv8z8ahg7jmy72ly6ilr4qynpr6811glfvas9sldqk2ygws74w";
  +    date = "2017-11-19";
  +    rev = "6cc968b085e6f22ec6dc18cecb016a8e63e4bdfa";
  +    sha256 = "0mwymz7cxl7r8r2yi7q9gag6gqc4my09pcpy68gg2xkg7kf9i9ys";
       propagatedBuildInputs = [
         appengine
         aws-sdk-go
         #azure-sdk-for-go
  +      bbolt
         cgofuse
         cobra
         crypto
  
positive.code: 
      excludedPackages = "\\(test\\|benchmark\\|example\\|bridge\\)";
      meta.useUnstable = true;
      date = "2017-11-14";
    };
  
    etcd_client = etcd.override {
  
negative.code:     sha256 = "01slk2wspdjrdffyn1fr8pvgh9k822j776fdx0ddhww3bj1s3v00";
    };
  
    go-libp2p-pubsub = buildFromGitHub {
      version = 3;
      owner = "libp2p";
      repo = "go-libp2p-pubsub";
      date = "2017-11-18";
      rev = "a031ab4d1b8142714eec946acb7033abafade3d7";
      sha256 = "037y9pfjjzjv5psrhjd9j3nlqqigsfm8xgz6c57i27p799hisifq";
      propagatedBuildInputs = [
        gogo_protobuf
      ];
    };
  
    go-libp2p-transport = buildFromGitHub {
      version = 3;
      owner = "libp2p";
  