modules: add upower

modules/default.nix

@@ -12,6 +12,7 @@
     ./networking.nix
     ./nix.nix
     ./packages.nix
+    ./upower.nix
     ./users.nix
   ];
 }

modules/upower.nix

@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+let
+  cfg = config.my.modules.upower;
+in
+{
+  options.my.modules.upower = with lib; {
+    enable = mkEnableOption "upower configuration";
+
+    levels = {
+      low = mkOption {
+        type = types.ints.unsigned;
+        default = 25;
+        example = 10;
+        description = "Low percentage";
+      };
+
+      critical = mkOption {
+        type = types.ints.unsigned;
+        default = 15;
+        example = 5;
+        description = "Critical percentage";
+      };
+
+      action = mkOption {
+        type = types.ints.unsigned;
+        default = 5;
+        example = 3;
+        description = "Percentage at which point an action must be taken";
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.upower = {
+      enable = true;
+
+      percentageLow = cfg.levels.low;
+
+      percentageCritical = cfg.levels.critical;
+
+      percentageAction = cfg.levels.action;
+    };
+  };
+}