ive got a surface tablet at work running nixos. it mostly is used to view security cameras.

the machine is fairly low spec and bogs itself down after a coupke days, so id like it to auto reboot at 9am. i work a late shift and often don’t leave til around 2am.

i guess we don’t use cron anymore? i really don’t understand how the systemd timers work… the wiki doesnt really give great details…

systemd.timers.“autoreboot” = {

wantedBy = [ “timers.target” ];

timerConfig = {

  OnCalendar="*-*-* 9:00:00";                                     Unit = "autoreboot.service";

};

};

systemd.services.“autoreboot” = {

script = ‘’

set -eu

${pkgs.coreutils}/run/current-system/sw/bin/reboot

‘’;

serviceConfig = {

Type = "oneshot";

User = "root";

};

};

the systemd target seems to be created, but it reports as dead when i check it…

any advice?

  • vividspecter@aussie.zoneEnglish
    11·
    1 month ago

    This line:

    ${pkgs.coreutils}/run/current-system/sw/bin/reboot

    is incorrect, as you’ve mixed a package path with an absolute path. Additionally, on my system at least, reboot is a part of pkgs.systemd and not pkgs.coreutils.

    So this should work:

    ${pkgs.systemd}/bin/reboot

    Or, since systemd is always installed on NixOS systems, you can use the absolute wrapper path:

    /run/current-system/sw/bin/reboot
    • dadarobot@lemmy.mlOPEnglish
      4·
      1 month ago

      excellent, thank you! in the future, how would i determine which package and path to use?

      • Oinks@lemmy.blahaj.zoneEnglish
        6·
        1 month ago

        For installed packages, you can use readlink:

        $ readlink $(type -P reboot)
/nix/store/axx9bvf0dmah41f39ds9xdkds1lsz6z9-systemd-261/bin/reboot

        The NixOS search can also search for binaries. It seems that busybox also provides a reboot which I guess might be useful for weird systemd-less deployments?

        If you want to search for any file across all packages, there’s also nix-index, which scrapes Hydra for output files and builds a database which you can then query with nix-locate.