Etcd and fleet

I want to clarify that CoreOS uses the same build system as Gentoo (portage) but a user of CoreOS will not know this. The CoreOS update mechanism is completely different[1], there is no emerge package manager on board and we ship very few user space tools relying on containers instead.

Please give it a shot. It is a quite different system than Gentoo. In fact the ChromeOS team basis their build system on Gentoo's portage too, but you would never know it.

[1] https://coreos.com/using-coreos/updates/