https://bbs.archlinux.org/viewtopic.php?id=231341

$ systemctl status wpa-supplicant
Unit wpa-supplicant.service could not be found.

＞＞このサービスを動作させるのでは？

$ systemctl enable wpa_supplicant@wlan0
Created symlink /etc/systemd/system/multi-user.target.wants/[email protected] → /lib/systemd/system/[email protected].

$ systemctl status wpa-supplicant
Unit wpa-supplicant.service could not be found.

$
.... はぁちがうなあ