anchor.diff:    };
   
     pkg = buildFromGitHub rec {
  -    date = "2016-06-20";
  +    date = "2016-06-23";
       owner  = "coreos";
       repo   = "pkg";
  -    rev = "fa29b1d70f0beaddd4c7021607cc3c3be8ce94b8";
  -    sha256 = "1dr9ajrlcqhzklawwklandax93xaj2igvynbwpp6plw13v1g24k5";
  +    rev = "a48e304ff9331be6d5df352b6b47bd1395ab5dd7";
  +    sha256 = "1rscgsik3n6kh51h3axdqwyjbsz6vqjx5p1s4c9v9vs41m679y3k";
       buildInputs = [
         crypto
         go-systemd_journal
  
positive.code: 
    consul-api = buildFromGitHub {
      inherit (consul) owner repo;
      rev = "09cfda47ed103910a8e1af76fa378a7e6acd5310";
      date = "2016-06-21";
      sha256 = "34c43e04134bd3a4badabca52672c7a6cb6329dd602507114fd387be3c99fa1a";
      buildInputs = [
        go-cleanhttp
        serf
  
negative.code:     ];
    };
  
    colorstring = buildFromGitHub {
      rev = "8631ce90f28644f54aeedcb3e389a85174e067d1";
      owner  = "mitchellh";
      repo   = "colorstring";
      sha256 = "14dgak39642j795miqg5x7sb4ncpjgikn7vvbymxc5azy7z764hx";
      date = "2015-09-17";
    };
  
    columnize = buildFromGitHub {
      rev = "50b9b539927dfe231b8be1caf81b2c81d5940276";
      owner  = "ryanuber";
      repo   = "columnize";
      sha256 = "1a21m5km221yd0w0ghw20023sa8jzin8nxi25r850ji4vyifv1r0";
      date = "2016-06-27";
    };
  
    consul = buildFromGitHub {
  