MarsSeed [1] filed a deletion request for pyqt4topyqt5 [2]: Dead Python 3.3 package from 2017 (last upstream release was in 2013).
The current source URL is dead (connection timeout). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/pyqt4topyqt5/
