Just for the record:
On Apr 3 2012 Kay Sievers said:
The udev built from the systemd source tree will stay compatible with
non-systemd init systems for a long time.
https://lwn.net/Articles/490413/
Then only four months after Kay's e-mail, in Aug 1 2012 Lennart said:
Yes, udev on non-systemd systems is in our eyes a dead end, in case you
haven't noticed it yet. I am looking forward to the day when we can drop that
support entirely.
http://lists.freedesktop.org/archives/systemd-devel/2012-August/006066.html
Since when 123 days are considered "a long time" in terms of stable software?
