Support for GTK 4 themes?

1

I downloaded the Flatpak version of Transmission, which is GTK4, but I didn’t see anything about a Flatpak version of GTK4 themes. Can you tell me if this will happen?

Or is there any way to put GTK4 themes inside Flatpak versions of GTK3 themes?

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2

No, there is no extension point for GTK4 themes.

3

You can by granting your Flatpak the access to your .themes folder and your GTK4 config folder.

sudo flatpak override --filesystem=$HOME/.themes:ro
sudo flatpak override --filesystem=xdg-config/gtk-4.0:ro
sudo flatpak override --env GTK_THEME=[theme name]

(The theme need to be installed in .themes)