MarsSeed [1] filed a deletion request for nvidia-340xx-rt [2]: Orphaned, severely outdated kernel module from 2018 for linux-rt. Last comment is from 2017. Seems there is no user demand.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/nvidia-340xx-rt/
