I did a 11.0 beta2 installation from scratch
with KDE4 on x86_64 hardware (i.e. without Gnome).

I just liked to run a yast module with the GTK UI using
yast2 --gtk module
but got it in Qt without any hint why
(even y2log didn't show me why I didn't get GTK).

I guessed that some GTK stuff is missing and
that yast2 silently falls back to Qt in this case.

If my assumption is right, plase let is show a stderr
message and write it also to y2log to inform the user
what happened.

Then I installed the yast2-control-center-gnome RPM
because I thought that this would pull in all
what is necessary for the GTK UI.

But now
yast2 --gtk module
fails with a stderr message abuout missing "gnomesu"
because there was no libgnomesu installed.

It would be nice to have appropriate RPM requirements
(of course wak requirements like "recommends")
so that the installer pulls in automatically
all what is necessary to run it with the GTK UI.

I didn't investigate further what else might be missing
and simply installed the whole Gnome pattern.

Now
yast2 --gtk module
works.

Perhaps the same kind of problems happen also the other way round
when Gnome is installed and one wants to run "yast2 --qt module".