MarsSeed [1] filed a deletion request for wingpanel-standalone-git [2]: Broken, unused variant from 2022 of wingpanel-git. Patching fails. 0 pkgstats.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/wingpanel-standalone-git/
