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70 lines
2.1 KiB
Nix
70 lines
2.1 KiB
Nix
{ config, lib, ... }:
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with lib;
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{
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options = {
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services.timesyncd = {
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enable = mkOption {
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default = !config.boot.isContainer;
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type = types.bool;
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description = ''
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Enables the systemd NTP client daemon.
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'';
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};
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servers = mkOption {
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default = config.networking.timeServers;
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description = ''
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The set of NTP servers from which to synchronise.
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'';
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};
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extraConfig = mkOption {
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default = "";
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type = types.lines;
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example = ''
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PollIntervalMaxSec=180
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'';
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description = ''
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Extra config options for systemd-timesyncd. See
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<link xlink:href="https://www.freedesktop.org/software/systemd/man/timesyncd.conf.html">
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timesyncd.conf(5)</link> for available options.
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'';
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};
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};
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};
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config = mkIf config.services.timesyncd.enable {
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systemd.additionalUpstreamSystemUnits = [ "systemd-timesyncd.service" ];
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systemd.services.systemd-timesyncd = {
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wantedBy = [ "sysinit.target" ];
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restartTriggers = [ config.environment.etc."systemd/timesyncd.conf".source ];
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};
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environment.etc."systemd/timesyncd.conf".text = ''
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[Time]
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NTP=${concatStringsSep " " config.services.timesyncd.servers}
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${config.services.timesyncd.extraConfig}
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'';
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users.users.systemd-timesync = {
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uid = config.ids.uids.systemd-timesync;
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group = "systemd-timesync";
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};
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users.groups.systemd-timesync.gid = config.ids.gids.systemd-timesync;
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system.activationScripts.systemd-timesyncd-migration = mkIf (versionOlder config.system.stateVersion "19.09") ''
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# workaround an issue of systemd-timesyncd not starting due to upstream systemd reverting their dynamic users changes
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# - https://github.com/NixOS/nixpkgs/pull/61321#issuecomment-492423742
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# - https://github.com/systemd/systemd/issues/12131
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if [ -L /var/lib/systemd/timesync ]; then
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rm /var/lib/systemd/timesync
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mv /var/lib/private/systemd/timesync /var/lib/systemd/timesync
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fi
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'';
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};
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}
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