Thanks to Gentoo developer hasufell, Arx Libertatis ebuilds are now available in the portage tree. This means Gentoo users no longer need the arx-libertatis overlay. Mandriva and ROSA packages have also been available in the distribution repositories for a while now.
If you want to see Arx Libertatis available in the default repositories of more Linux distributions, please open a package request for your favorite distro at the appropriate location - even if we already provide our own packages for that distribution.