Importing QtGui silently imports QtWidgets

[OpenNingia]

In qtpy/QtGui.py there is this line:

from PySide6.QtWidgets import QFileSystemModel

I found this occurrence but maybe there are other ones.

which silently imports QtWidget. I understand it's there for backwards compatibility, but this causes some severe headache for some use cases (i.e. shipping a QML app on Android, the app crash because it doesn't bundle QtWidget binary library in the apk).

Please add an escape hatch to avoid importing QtWidgets inside QtGui.

Suggestion:

    def __getattr__(name):
        if name == "QFileSystemModel":
            from PySide6.QtWidgets import QFileSystemModel
            return QFileSystemModel
        raise AttributeError(f"module {__name__!r} has no attribute {name!r}")