The latest LF5.15.5_1.0.0 yocto release has replaced the QT by QT6, but QT6 software is not compatible with old QT5, is there any way to downgrade QT6 back to QT5 for this yocto code base?
The reason we need to use QT5 is because we want to porting Maliit on screen keyboard to the Wayland system, but the Maliit keyboard was developed by QT5's QML. As for QT6's QML, it is not backward compatible with QT5's QML, which will cause the software use of QT5's QML to develop cannot be used in the QT6 environment.
https://github.com/maliit/keyboard