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AppImage missing wayland plugin and multimedia backends #1144

@ConnorC432

Description

@ConnorC432

The AppImage appears to be missing some qt related libraries?
I can build and run it fine from source but using the AppImage it fails to start:

./SerialPrograms-x86_64.AppImage
qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.

fish: Job 1, './SerialPrograms-x86_64.AppImage' terminated by signal SIGABRT (Abort)

Using XCB allows it to start but none of my Video Input devices appear.
All of my audio devices appear, however they all just provide my system default audio input regardless of which one i choose.

QT_QPA_PLATFORM=xcb ./SerialPrograms-x86_64.AppImage
Write log to existing file "./SerialPrograms-x86_64.AppImage.log"
No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available.
qt.core.qfuture.continuations: Parent future has 2 result(s), but only the first result will be handled in the continuation.
qt.core.qfuture.continuations: Parent future has 2 result(s), but only the first result will be handled in the continuation.
Exiting main()...

log file

After extracting the AppImage and looking in /usr/lib these are the only qt libraries i could see:

ls | grep -i qt
libQt6Concurrent.so.6
libQt6Core.so.6
libQt6DBus.so.6
libQt6FFmpegStub-crypto.so.3
libQt6FFmpegStub-ssl.so.3
libQt6FFmpegStub-va-drm.so.2
libQt6FFmpegStub-va.so.2
libQt6FFmpegStub-va-x11.so.2
libQt6Gui.so.6
libQt6Multimedia.so.6
libQt6MultimediaWidgets.so.6
libQt6Network.so.6
libQt6OpenGL.so.6
libQt6Pdf.so.6
libQt6QmlMeta.so.6
libQt6QmlModels.so.6
libQt6Qml.so.6
libQt6QmlWorkerScript.so.6
libQt6Quick.so.6
libQt6SerialPort.so.6
libQt6Svg.so.6
libQt6VirtualKeyboardQml.so.6
libQt6VirtualKeyboard.so.6
libQt6Widgets.so.6
libQt6XcbQpa.so.6

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