MarsSeed [1] filed a deletion request for brlcad-bin [2]: Badly packaged. Abandoned since 2017.
There's a much newer source-built package on AUR.[a] [a]: https://aur.archlinux.org/packages/brlcad [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/brlcad-bin/
