Yamakuzure Support elogind as an alterantive session tracker for systemd-logind.
For users who do not want to run the full systemd suite, but do not
want to patch sddm to use ck-launch-session either, elogind can be
used as an alternative session tracker via its PAM module.
See:
https://github.com/sddm/sddm/pull/746
https://github.com/Yamakuzure/sddm