anchor.diff:      version = 6;
       owner = "denverdino";
       repo = "aliyungo";
  -    rev = "d98ca8599d8e7b6913c1a5e7dbb2066739d0cd2a";
  -    date = "2018-07-20";
  -    sha256 = "1q5smkv5pdqzvnzl3nx58xq38vpf5da6px5jjnjrab2g1465r52v";
  +    rev = "69560d9530f5265ba00ffad2520d7ef01c2cddd4";
  +    date = "2018-08-15";
  +    sha256 = "hXeN5xhlIFx+fp0V3fuSzXTzlKYVBoGj7gRSBhK/z1E=";
       propagatedBuildInputs = [
         protobuf
         text
  
positive.code:     version = 6;
      owner = "btcsuite";
      repo = "btcd";
      date = "2018-07-22";
      rev = "9a2f9524024889e129a5422aca2cff73cb3eabf6";
      sha256 = "0p8sxy0i2whylxbhg1gzvd1x4dsip01w6qi3syqcq2q3i579qzvx";
      subPackages = [
        "btcec"
      ];
    };
  
    btree = buildFromGitHub {
      version = 5;
      rev = "e89373fe6b4a7413d7acd6da1725b83ef713e6e4";
      owner  = "google";
      repo   = "btree";
      sha256 = "0z6w5z9pi4psvrpami5k65pqg7hnv3gykzyw82pr3gfa2vwabj3m";
      date = "2018-01-24";
    };
  
    builder = buildFromGitHub {
  
negative.code: 
    utils = buildFromGitHub {
      version = 6;
      rev = "bf9cc5bdd62dabc40b7f634b39a5e2dc44d44c45";
      owner = "juju";
      repo = "utils";
      sha256 = "gD7MhQUE53BCfYgPpDEkSC6NY+nHF9CFcLSGqSfyHvQ=";
      date = "2018-08-20";
      subPackages = [
        "."
        "cache"
  