matthewq337 [1] filed a deletion request for niri-shm-sharing [2]: Now niri-git merge the pr https://github.com/niri-wm/niri/pull/1791, and it works on wemeet. So use niri-git instead. This package is no longer suggested.
[1] https://aur.archlinux.org/account/matthewq337/ [2] https://aur.archlinux.org/pkgbase/niri-shm-sharing/
