Let's decide what to do about
Long story short: timedated no longer supports NTP clients other than
timesyncd (the new systemd NTP client). Oversimplifying, the chrony
developers say that chrony is better than timesyncd, and the systemd
developers say that timesyncd is better than chrony.
We need to remove chrony from the default install and figure out what to
do for users upgrading to F21 (if we do not uninstall chrony, the switch
will be broken), or patch out the change to timedated, or build systemd
without timedated and provide our own implementation of it, or patch
None of these seem like particularly good options. Removing chrony seems
like an easy solution, but I'm not sure how we could handle upgrades
without hurting users who don't want chrony to be removed.