btw i use nix
ryan.freumh.org
1{
2 config,
3 lib,
4 pkgs,
5 ...
6}:
7
8let
9 cfg = config.custom.battery;
10in
11{
12 options.custom.battery.enable = lib.mkEnableOption "battery";
13
14 config = lib.mkIf cfg.enable {
15 systemd.user.services.battery_monitor = {
16 Install = {
17 WantedBy = [ "default.target" ];
18 };
19 Service = {
20 ExecStart = pkgs.writeScript "battery_monitor.sh" ''
21 #!${pkgs.bash}/bin/bash
22
23 battery=/sys/class/power_supply/BAT0
24
25 while :
26 do
27 status="$(${pkgs.coreutils}/bin/cat $battery/status)"
28 capacity="$(${pkgs.coreutils}/bin/cat $battery/capacity)"
29
30 if [ "$status" = Discharging -a "$capacity" -lt 5 ]; then
31 ${pkgs.util-linux}/bin/logger "Critical battery threshold"
32 ${pkgs.systemd}/bin/systemctl hibernate
33 elif [ "$status" = Discharging -a "$capacity" -lt 10 ]; then
34 ${pkgs.libnotify}/bin/notify-send "warning: battery at $capacity%"
35 fi
36 ${pkgs.coreutils}/bin/sleep 60
37 done
38 '';
39 Restart = "always";
40 RestartSec = 10;
41 Type = "simple";
42 };
43 };
44 };
45}