GNOME/GNOME without systemd

The popular GNOME 3 desktop environment may be used under the init system in Gentoo (as well as the default ).

Currently, interoperability is provided via two distinct approaches:
 * 1) Official Gentoo support is provided for GNOME-3.30+. Installation instructions may be found here.
 * 2) Dantrell provides a set of overlays, targeting GNOME-3.14+, as part of his GNOME without systemd project. Installation instructions may be found here.