syslog.target, which was removed in systemd v198 [1]. It should be safe to remove this as systemd will ensure logging is available before a service is started [2]. Future modules referencing syslog.target should be avoided.
-> % lintian-explain-tags systemd-service-file-refers-to-obsolete-target
N:
W: systemd-service-file-refers-to-obsolete-target
N:
N: The systemd service file refers to an obsolete target.
N:
N: Some targets are obsolete by now, e.g. syslog.target or dbus.target. For example, declaring After=syslog.target is
N: unnecessary by now because syslog is socket-activated and will therefore be started when needed.
https://github.com/chaos/powerman/blob/0badded46d2cabdc94d1da9a94e883d086bd3c04/etc/powerman.service.in#L2-L3
Similar issue: https://github.com/NixOS/nixpkgs/issues/149721