Comment # 8 on bug 931768 from Egbert Eich

This sysconfig/windowmanager is used by /etc/profile.d/profile(c)sh to set the
WINDOWMANAGER env variable. This is still used by sessions which are started by
xinit (or at least use the xinitrc scripts). These profiles are part of
aaa_base.

Of course we can throw all this away or greatly simplify all the scripts which
have been fine tuned by Werner. But it may break scenarios people have been
using over years.
We'd need someone to go over all the profile and startup scripts
(/etc/X11/xinit/xinitrc(.common) /etc/skel/.xinitrc.template /etc/X11/xdm/*)
and find out what can be simplified or removed.
Once these files have been reworked, the result needs to be documented in the
release notes as users $HOME/.xinitrc scripts may now not work any more.

This is however not part of this ticket.

If we are sure there are entries in sysconfig/windowmanager which are no longer
used, we should remove them. Since most of them are KDE-related, we should ask
the KDE maintainers.
This should be done on a different ticket as well.