# - /usr/share/sip/PyQt5/QtCore, for a system install
# - or <xyz>/sip/QtCore, for a custom install
# - or <xyz>/share/sip/QtCore, for a custom install
# - /usr/share/sip/PyQt5/QtCore, for a system install
# - or <xyz>/sip/QtCore, for a custom install
# - or <xyz>/share/sip/QtCore, for a custom install