The current -systemd subpackage isn't getting installed due to the invalid install_if statement. As abuild's fork in pmOS for systemd specifies a default_systemd() and systemd() function, overriding it here isn't needed. The -systemd subpackage contains configuration for gnome-session in systemd mode. - By placing a file into systemd/user/gnome-session@phosh.target.d, we generate a valid gnome-session@phosh.target. - The first invokation of gnome-session by phosh-session includes the arg `--session phosh`. When gnome-session sees a running systemd user manager via dbus, it will signal to systemd to start `gnome-session@phosh.target`. As we switched to tinydm/autologin for phosh on systemd-edge, this will only work when autologin also tries to load pam_systemd.so. [ci:skip-build]: already built successfully in CI