Simplicity is a form of art...

Using CUSTOM_BUILDOPT in refpolicy for USE flag-alike functionality?
by Sven Vermeulen, post on Fri 16 August 2013

As you are probably aware, Gentoo uses the reference policy as its base for SELinux policies. Yes, we do customize it and not everything is already pushed upstream (for instance, our approach to use xdg_*_home_t customizable types to further restrict user application access has been sent up for comments …