nixos/modules/services/system/uptimed.nix

   1 {
   2   config,
   3   lib,
   4   pkgs,
   5   ...
   6 }:
   7 let
   8   cfg = config.services.uptimed;
   9   stateDir = "/var/lib/uptimed";
  10 in
  11 {
  12   options = {
  13     services.uptimed = {
  14       enable = lib.mkOption {
  15         type = lib.types.bool;
  16         default = false;
  17         description = ''
  18           Enable `uptimed`, allowing you to track
  19           your highest uptimes.
  20         '';
  21       };
  22     };
  23   };
  24
  25   config = lib.mkIf cfg.enable {
  26
  27     environment.systemPackages = [ pkgs.uptimed ];
  28
  29     users.users.uptimed = {
  30       description = "Uptimed daemon user";
  31       home = stateDir;
  32       uid = config.ids.uids.uptimed;
  33       group = "uptimed";
  34     };
  35     users.groups.uptimed = { };
  36
  37     systemd.services.uptimed = {
  38       unitConfig.Documentation = "man:uptimed(8) man:uprecords(1)";
  39       description = "uptimed service";
  40       wantedBy = [ "multi-user.target" ];
  41
  42       serviceConfig = {
  43         Restart = "on-failure";
  44         User = "uptimed";
  45         Nice = 19;
  46         IOSchedulingClass = "idle";
  47         PrivateTmp = "yes";
  48         PrivateNetwork = "yes";
  49         NoNewPrivileges = "yes";
  50         StateDirectory = [ "uptimed" ];
  51         InaccessibleDirectories = "/home";
  52         ExecStart = "${pkgs.uptimed}/sbin/uptimed -f -p ${stateDir}/pid";
  53       };
  54
  55       preStart = ''
  56         if ! test -f ${stateDir}/bootid ; then
  57           ${pkgs.uptimed}/sbin/uptimed -b
  58         fi
  59       '';
  60     };
  61   };
  62 }