Kernald [1] filed an orphan request for python-unrar-cffi [2]: This package has been broken for over 5 months because of a missing dependency, with the author not responding to comments nor adding the missing dependency.
[1] https://aur.archlinux.org/account/Kernald/ [2] https://aur.archlinux.org/pkgbase/python-unrar-cffi/