The new mypy 0.730 release allows more specific # type: ignore annotations such as:
assert value is not configutils.UNSET # type: ignore[comparison-overlap]
However, this causes pyflakes to complain:
qutebrowser/config/websettings.py:96: undefined name 'ignore'
qutebrowser/config/websettings.py:96: undefined name 'comparison'
qutebrowser/config/websettings.py:96: undefined name 'overlap'