Kei Kebreau <kkebreau@posteo.net> writes:

> Installing both 'xfce4-panel' and 'xfce4-whiskermenu-plugin' into the
> user profile does work!
Okay, but I guess that will be some problem too, since then
X_XFCE4_LIB_DIRS would contain both system and user paths...

> Is there a way to make clear to users and
> administrators that xfce4-panel and its plugins should both be
> installed at the user or system level to ensure proper function?  I
> don't think it's obvious since our Xfce desktop service implicitly
> installs the xfce4-panel.

Yes, how about document it like this: