Elogind

elogind is Article description::the [[systemd project's logind, extracted to a standalone package.]] It's designed for users who prefer a non-systemd init system, but still want to use popular software such as KDE/Wayland or GNOME that otherwise hard-depends on systemd.

Kernel
The following kernel options are recommended:

In the unlikely (and not recommended) event that standard kernel features are enabled for manual configuration, elogind also requires,   and   support. Most users can ignore this.

USE flags
There is a global  USE flag for enabling elogind support in other packages. It's also recommended to disable support for other session trackers to avoid conflicts:

Emerge
After updating your USE flags update the system so the changes take effect:

Service
elogind may be optionally configured to start at boot time:

Alternatively, elogind will be launched automatically when the first service calls it via dbus, or if built with, when the first user logs into the system.

External resources

 * - integration into Gentoo tracker bug.