1431b2f701
* man: Advertise systemd-time-wait-sync.service more The description of time-sync.target says that NTP services *should* pull that target, but doesn't mention that e.g. systemd-timesyncd.service doesn't actually do that. As a result, time-sync.target is reached way earlier than people expect; see #5097, #8861, #11008. systemd provides systemd-time-wait-sync.service to ameliorate this problem, but doesn't feature it prominently in relevant manpages. In fact, it's only mentioned in passing in systemd-timesyncd.service(8). As a result, I ended up re-implementing that service, and I'm not the first one: https://github.com/NixOS/nixpkgs/pull/51338 This patch adds a mention right in the description of time-sync.target, which will hopefully raise awareness of this helper service.
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