anchor.diff:  
     go-ethereum = buildFromGitHub {
       version = 3;
  -    date = "2017-05-24";
  -    rev = "344f25fb3ec26818c673a5b68b21b527759d7499";
  +    date = "2017-05-26";
  +    rev = "cb809c03da18bf45f961a931dfd4c765de144e66";
       owner  = "ethereum";
       repo   = "go-ethereum";
  -    sha256 = "1l44gbpkcr8zclk0kw9szpyjzr96gy4w4d3ya9v5h0fy00dvlkaf";
  +    sha256 = "08pzqrpgf1ycls8885imdfz5whv6q4s6czndzcvvy6f74cdn392i";
       subPackages = [
         "crypto/sha3"
       ];
  
positive.code:     version = 3;
      owner = "minio";
      repo = "mc";
      rev = "6c677e0d116eaf7af58ed2a3c711c96711b7c51e";
      sha256 = "1n5jlavnyp47nlfflkqr0230w2ykjdsy36djsml46mz7nccvbj3z";
      propagatedBuildInputs = [
        cli_minio
        color
  
negative.code:   };
  
    kcp-go = buildFromGitHub {
      version = 3;
      owner = "xtaci";
      repo = "kcp-go";
      rev = "v3.16";
      sha256 = "0kycwds98a1ab54q4xswdgs4233hcki1lsml0r2d0vyda2sn3gdw";
      propagatedBuildInputs = [
        crypto
        errors
  