anchor.diff:      version = 2;
       owner = "minio";
       repo = "sha256-simd";
  -    date = "2016-09-06";
  -    rev = "672e7bc9f3482375df73741cf57a157fe187ec26";
  -    sha256 = "60e3b179cd36fa04296bbb41bb8b490e340769aa511bcce16aefe5f35201872c";
  +    date = "2016-10-15";
  +    rev = "f78567f7ee70e4be482ad2849f6c3bb7651b34a5";
  +    sha256 = "0mb6knh4bx8p4kpaq4grcc9gw7w9kliipky30sbw1nqnrymmcsja";
     };
   
     skyring-common = buildFromGitHub {
  
positive.code: 
    mitchellh_cli = buildFromGitHub {
      version = 2;
      date = "2016-10-06";
      rev = "2b05dd12fcaee6566e0a8a256c7996d7038ddf6c";
      owner = "mitchellh";
      repo = "cli";
      sha256 = "19kq50hzwjiyiyxjpgwmg4jsdhrd58mpqp67g68r5kzfpq71hk4s";
      propagatedBuildInputs = [ crypto go-radix speakeasy go-isatty ];
    };
  
  
negative.code: 
    dns = buildFromGitHub {
      version = 2;
      rev = "46df8c9462fa287d54225d6bdebbcfd41da434f7";
      date = "2016-10-17";
      owner  = "miekg";
      repo   = "dns";
      sha256 = "0b880rgrwfsasn3wpsllwzg0r1b5k6b4p2vn5dv73prl07i5y1q4";
    };
  
    weppos-dnsimple-go = buildFromGitHub {
  