27 lines
908 B
Nix
27 lines
908 B
Nix
{ pkgs, ... }:
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let
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readlink = "${pkgs.coreutils}/bin/readlink";
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notify-send = "${pkgs.libnotify}/bin/notify-send";
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in {
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systemd.user.services.detect-reboot-for-upgrade = {
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script = ''
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set -eu -o pipefail
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booted="$(${readlink} /run/booted-system/{initrd,kernel,kernel-modules})"
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built="$(${readlink} /nix/var/nix/profiles/system/{initrd,kernel,kernel-modules})"
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if [[ "''${booted}" != "''${built}" ]];
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then
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echo "Looks like we need a reboot!"
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${notify-send} --urgency=low --icon=system-reboot "Reboot is needed for a NixOS upgrade."
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fi
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'';
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serviceConfig = { Type = "oneshot"; };
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};
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systemd.user.timers.detect-reboot-for-upgrade = {
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wantedBy = [ "timers.target" ];
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partOf = [ "detect-reboot-for-upgrade.service" ];
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timerConfig = {
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OnCalendar = "hourly";
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Unit = "detect-reboot-for-upgrade.service";
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};
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};
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}
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