MarsSeed [1] filed a deletion request for lib32-opencv [2]: Not needed anymore in 32-bit. Its only dependent is lib32-ffmpeg- semifull-git, for which I've already submitted a deletion request, as it's unmaintained and broken, with 17 dependencies missing already.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/lib32-opencv/
