anchor.diff:  
     distribution = buildFromGitHub {
       version = 3;
  -    rev = "edc3ab29cdff8694dd6feb85cfeb4b5f1b38ed9c";
  +    rev = "7a8efe719e55bbfaff7bc5718cdf0ed51ca821df";
       owner = "docker";
       repo = "distribution";
  -    sha256 = "01ffp9690kdnl1zmmw44s3ndnmdiiix16sd6vcr40j81mx45gmdd";
  +    sha256 = "0x06b3scgk704zgn6r3gl3v61dnp3hgk8h6j4v1fw7nf47q31v4z";
       meta.useUnstable = true;
  -    date = "2017-07-26";
  +    date = "2017-08-04";
     };
   
     distribution_for_moby = buildFromGitHub {
  
positive.code: 
    crypto = buildFromGitHub {
      version = 3;
      rev = "358f15eacb587b056fc93273b930314a5cda12fe";
      date = "2017-08-02";
      owner = "golang";
      repo = "crypto";
      sha256 = "1082j7laia67d0n1ml5xc5ask4rx0qdp4jzpxsz5n75r55a4rgs2";
      goPackagePath = "golang.org/x/crypto";
      buildInputs = [
        net_crypto_lib
  
negative.code:     version = 3;
      owner = "influxdata";
      repo = "influxdb";
      rev = "v1.3.2";
      sha256 = "0dbmwa2hackkvfbx7d9gxqlnkbnv26qf8mgajq966b4w12dxy4d7";
      propagatedBuildInputs = [
        bolt
        crypto
  