anchor.diff:  
     aws-sdk-go = buildFromGitHub {
       version = 2;
  -    rev = "v1.4.17";
  +    rev = "v1.4.18";
       owner  = "aws";
       repo   = "aws-sdk-go";
  -    sha256 = "1i0aacxlfg8wvrd3czix3pvbjikpax9pc1k5a294adqfv209r7rm";
  +    sha256 = "1vyw398vlv6jgdaq4c9z8srz7jrrqzdi8wpprfrqmcd54ssrbhkl";
       excludedPackages = "\\(awstesting\\|example\\)";
       buildInputs = [
         tools
  
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: 
    docker = buildFromGitHub {
      version = 2;
      rev = "v1.12.2";
      owner = "docker";
      repo = "docker";
      sha256 = "1j5l26zrz8dh7fcq5f2bh2wzd0hzsdcf8l4y0ll5kkrdyp8n6qq8";
      meta.useUnstable = true;
    };
  
    docker_for_runc = buildFromGitHub {
  