How to get the icon of an external app in a Flatpak GTK4 application

Question

I am developing an app which would require to get the icon of an installed app on the system.

My app is distributed as a Flatpak.

I tried Gtk.Icon.new_from_icon_name() but with no luck.

Can anybody help? Thanks

Answer 1

Sometimes I don't understand how Flatpak works: my manifest included "--filesystem=host" but that was not enough

I added "--filesystem=xdg-data/icons:ro" and now it is working..