32 lines
891 B
Nix
32 lines
891 B
Nix
{ config, lib, pkgs, ... }:
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with lib;
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{
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options = {
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laptop.onLowBattery = {
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enable = mkEnableOption "Perform action on low battery";
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thresholdPercentage = mkOption {
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description = "Threshold battery percentage on which to perform the action";
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default = 5;
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type = types.int;
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};
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action = mkOption {
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description = "Action to perform on low battery";
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default = "hibernate";
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type = types.enum [ "hibernate" "suspend" "suspend-then-hibernate" ];
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};
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};
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};
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config =
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let cfg = config.laptop.onLowBattery;
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in mkIf cfg.enable {
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services.udev.extraRules = concatStrings [
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''SUBSYSTEM=="power_supply", ''
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''ATTR{status}=="Discharging", ''
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''ATTR{capacity}=="[0-${toString cfg.thresholdPercentage}]", ''
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''RUN+="/${pkgs.systemd}/bin/systemctl ${cfg.action}"''
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];
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};
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}
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