HurricanePootis [1] filed a deletion request for lib32-pipewire [2]: lib32-pipewire and lib32-pipewire-jack are now in the multilib repository, making this AUR package obsolete and redundant.
[1] https://aur.archlinux.org/account/HurricanePootis/ [2] https://aur.archlinux.org/pkgbase/lib32-pipewire/