MarsSeed [1] filed a deletion request for python-pyqt5-sip4 [2]: As of now, nothing requires this legacy package. And it conflicts with python-pyqt5. Safe to delete now.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-pyqt5-sip4/
