Here at the very end of 2022, HPLIP now fully supports PyQt5 for its GUI (in addition to preserving PyQt4 support, for some reason)... just in time for it to now need porting to PyQt6! (And/or PySide6, aka "Qt for Python".)
So, I guess dealer's choice whether this bug gets closed, or morphs into a "please port to a Qt6 Python implementation" request.
Here at the very end of 2022, HPLIP now fully supports PyQt5 for its GUI (in addition to preserving PyQt4 support, for some reason)... just in time for it to now need porting to PyQt6! (And/or PySide6, aka "Qt for Python".)
So, I guess dealer's choice whether this bug gets closed, or morphs into a "please port to a Qt6 Python implementation" request.