Although it doesn't really make sense to support several init systems in parallel, it would still be nice to have this. The rational behind this is that gentoo is classically supporting openrc but with having gnome hard depending on systemd we now also support this. That means we always install all necessary files for both systems. With the current build system for netatalk we need to hack manually to get both installed. having something like --with-init-style=gentoo,systemd would be great.