MarsSeed [1] filed a deletion request for usd-fbx [2]: Discontinued, unused legacy package.
As per former maintainer @adro commented on 2024-09-26, AUR/usd-fileformat-plugins [a] should be used instead. (Latter is actively developed, and covers the same use case.) [a]: https://aur.archlinux.org/pkgbase/usd-fileformat-plugins [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/usd-fbx/
