I would like to add a Flatpak program to the toolbar by editing ~/.icewm/toolbar file.
What I noticed is when I add a native package, I only need to provide the name of the icon.
I tried the same with Flatpaks, provided the same icon name that's provided in their desktop entry file (basically the package name) but it doesn't work that way, I have to search for the icon in various subdirectories and provide the full path to make it work.
Edit: I noticed that Flatpak icons don't appear in menu either.
Isn't there a more practical way to make the icon of Flatpak programs appear on IceWM toolbar/menu?
Just checked XDG_DATA_DIRS and it already contains the mentioned directories.
Just noticed that Flatpak don't even appear in the menu. So it's due to missing XDG spec?