anchor.diff:  
     docker = buildFromGitHub {
       version = 2;
  -    rev = "f302226a5ba9cf5d1af4ee5392cd57a71545b80a";
  +    rev = "v1.12.2";
       owner = "docker";
       repo = "docker";
  -    sha256 = "0gacfdi52yzrbrnzsps08nn23pj0dzgbjgczrv8z824hz33nss4d";
  +    sha256 = "1j5l26zrz8dh7fcq5f2bh2wzd0hzsdcf8l4y0ll5kkrdyp8n6qq8";
       meta.useUnstable = true;
  -    date = "2016-10-17";
     };
   
     docker_for_runc = buildFromGitHub {
  
positive.code: 
    go-dockerclient = buildFromGitHub {
      version = 2;
      date = "2016-10-17";
      rev = "6bb5d2ca867c937db2e4281f74ad0f4287b86437";
      owner = "fsouza";
      repo = "go-dockerclient";
      sha256 = "03vklxmjhblycnzckbdrhb5fjzcilwfvcl36j4wf7cpvg57vkibk";
      propagatedBuildInputs = [
        docker_for_go-dockerclient
        go-cleanhttp
  
negative.code: 
    dns = buildFromGitHub {
      version = 2;
      rev = "58f52c57ce9df13460ac68200cef30a008b9c468";
      date = "2016-10-18";
      owner  = "miekg";
      repo   = "dns";
      sha256 = "0fgnkjzxfdjrpb58vl9r5zk237v7q5wyx49vqflm1ah95gbbf0d4";
    };
  
    weppos-dnsimple-go = buildFromGitHub {
  