after seeing
`adjtime failed: Invalid argument` in my syslog, I tried using
`ntpd -s` but it would trigger
`/etc/ntpd.conf: No such file or directory`
see https://github.com/NixOS/nixpkgs/issues/31885
Instead of running the daemon with a specific config file, use the
standard file so that user are able to use the ntp executable without
having to look for the current config file.
- most nixos user only require time synchronisation,
while ntpd implements a battery-included ntp server (1,215 LOCs of C-Code vs 64,302)
- timesyncd support ntp server per interface (if configured through dhcp for instance)
- timesyncd is already included in the systemd package, switching to it would
save a little disk space (1,5M)
This conflicts with the existing reference NTP daemon, so we're using
services.ntp.enable = mkForce false here to make sure both services
aren't enabled in par.
I was already trying to merge the module with services.ntp, but it would
have been quite a mess with a bunch of conditions on the package name.
They both have a bit in common if it comes to the configuration files,
but differ in handling of the state dir (for example, OpenNTPd doesn't
allow it to be owned by anything other than root).
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
