nixpkgs/nixos/modules/services/system/uptimed.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.uptimed;
stateDir = "/var/spool/uptimed";
in
{
options = {
services.uptimed = {
enable = mkOption {
default = false;
description = ''
Enable <literal>uptimed</literal>, allowing you to track
your highest uptimes.
'';
};
};
};
config = mkIf cfg.enable {
users.users.uptimed = {
description = "Uptimed daemon user";
home = stateDir;
createHome = true;
uid = config.ids.uids.uptimed;
};
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systemd.services.uptimed = {
unitConfig.Documentation = "man:uptimed(8) man:uprecords(1)";
description = "uptimed service";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Restart = "on-failure";
User = "uptimed";
Nice = 19;
IOSchedulingClass = "idle";
PrivateTmp = "yes";
PrivateNetwork = "yes";
NoNewPrivileges = "yes";
ReadWriteDirectories = stateDir;
InaccessibleDirectories = "/home";
ExecStart = "${pkgs.uptimed}/sbin/uptimed -f -p ${stateDir}/pid";
};
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preStart = ''
if ! test -f ${stateDir}/bootid ; then
${pkgs.uptimed}/sbin/uptimed -b
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fi
'';
};
};
}