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modules/nixos/power-saving.nix

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+{ lib, config, ... }:
+
+with lib;
+let
+  cfg = config.modules.power-saving;
+in
+{
+  options.modules.power-saving = {
+    enable = mkEnableOption "power saving";
+  };
+  config = mkIf cfg.enable {
+    # Setup power management
+    powerManagement.enable = true;
+    services.thermald.enable = true;
+    services.power-profiles-daemon.enable = true;
+
+    # Enable wifi power saving
+    networking.networkmanager.wifi.powersave = true;
+  };
+}