Since input properties have been introduced in xorg-server, the xf86misc extension has been deprecated. The extension has already been removed from xorg-server, so there's no server side implementation anymore. I removed the dependency from all remaining clients, except for kdebase-workspace, which is in both testing and extra at this moment. The dependency has already removed from kdebase-workspace in svn. Please remove this dependency from your chroots and make sure packages no longer build against it. When the last packages have the dependency removed, I can take the package out of the repository.