Re: How to detect a gtk desktop programmatically

> That's an unfortunate truth which is why I was hoping for an alternative way
> to detect this.
> At time of writing this, Ubuntu's the only one I've found modifying
> XDG_CURRENT_DESKTOP and keep something indicative of Gtk inside  e.g.
> (ubuntu:GNOME).

Nothing about "ubuntu:GNOME" is "indicative of Gtk", it's stating the fact your
running Ubuntu's modified GNOME session.

XDG_CURRENT_DESKTOP is supposed to indicate just that: the current desktop
environment

Not some insight into whatever technology that desktop is using - other
variables like XDG_SESSION_TYPE do that

Really there is 3 approaches here:
   1. Convince every desktop session to export "OPENJDK_HEY_IM_GTK" and look at
that. - and then wait 4/5 years for that to trickle down to users
   2. Maintain a map of know names in OpenJDK itself
   3. Assume all Linux based platforms use Gtk

When your trying to choose between Windows, GTK, Aqua, Motif & Metal the best
choice would seem to be 3

When KDELookAndFeel becomes a thing you can worry about detecting KDE or LXQt,
currently this is a rather academic exercise

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