Usually adding qt6.qtwayland to buildInputs and exporting QT_QPA_PLATFORM=wayland before starting the program fixes it (organicmaps, another qt app works just fine). Does not seem to be the case for ...

first of all, thank you a lot for your project! I am packaging my project with Qt5 for years now using your tools and it always worked flawlessly. I am currently trying to package sayonara with Qt 6.8 ...

You might not realize it, but most of us are using Qt-powered products every day, with the development tools behind anything from electric toothbrushes, to coffee machines, and even medical devices.