windeployqt deploying many more DLLs and QtQuick things since Qt6

[Holt59]

Hi,

I'm deploying an app using windeployqt.exe, which the following command lines (updated for Qt6):

windeployqt.exe
        --no-translations
        --webenginewidgets
        --websockets
        --openglwidgets
        --libdir dlls
        --no-compiler-runtime
        --plugindir qtplugins $BINARY

The app uses QML for tutorials in a tutorials/ subdirectory. Since Qt6, I get way more DLLs deployed with this than with Qt5, in particular:

• I get many Qt63DXXX.dll deployed, and not all of them can be removed with --no-3dxxx flags,
• Many other DLLs I don't expect such as Qt6Pdf, Qt6QuickControls2, etc.
• I get tons of stuff in the QtQuick folder I would not get before. In Qt5, the QtQuick.2 folder contains 3 files, in Qt6, the same files with many subfolders.

These changes amount for about 50-60MB... I do understand that some new DLLs might be needed but most of them seems not.

Is there a way to reduce the amount of stuff deployed and get something similar to Qt5's windeploy?