Dark theme on Linux?

I was trying to start he AppImage on Linux using a specific Qt theme, with:

QT_STYLE_OVERRIDE=Matcha-Dark MidihubEditor_1.13.4.AppImage

But unfortunately it throws the following error and starts with the default very bright theme:

Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
QApplication: invalid style override passed, ignoring it.

It will not allow me to use the suggested session type, only the xcb plugin seems to be available for this application. qt5-wayland is installed on my arch based distro.

I’m running Gnome, would it be possible to allow the application to use a theme selected with Kvantum, or manually specifying it? I know this doesn’t seem like a big deal, but it’s a quality of life thing for me :slight_smile:

AppImages are built to use only the bundled libraries, as much as possible. If you want to try replacing the Qt libraries, you can try doing so at your own risk by extracting the AppImage, and running it on your own. See Running AppImages — AppImage documentation for available command line arguments.

I’m guessing by your answer there is no other way to override the theme :slight_smile:

Hopefully I can request this as maybe a future feature?