Comment # 9 on bug 1030873 from Josef Reidinger

(In reply to Ludwig Nussel from comment #8)
> we could add some sed call of course. It's not the same though as that would
> happen always, not just if yast is used for initial installation. So for
> 42.3 some yast based method would be preferred IMO.
> 
> For TW I'd probably suggest to get rid of DEFAULT_WM and use e.g.
> update-alternatives instead.

but we have in yast same problem. What should be done if more then one is
provided? what if provided WM is lxde, xfce and e17? which one we should pick?
note that pattern beside desktop selection is not exclusive choice, so we can
get more then one.