MarsSeed [1] filed a deletion request for lib32-hdf5 [2]: This package can be safely deleted, as it's only required by the completely broken and unneeded lib32-ffmpeg-semifull-git (deletion request pending), and its also-unneeded dependency, lib32-opencv (deletion request also submitted).
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/lib32-hdf5/
