Suspend when the battery is low

modules/power.nix

@@ -37,11 +37,8 @@
     };
   };
 
-  # Suspend to RAM/disk when battery is critical
+  # Suspend when the battery is critical
-  services.upower = {
+  services.udev.extraRules = ''
-    enable = true;
+    SUBSYSTEM=="power_supply", ATTR{status}=="Discharging", ATTR{model_name}=="01AV405", ATTR{capacity}=="[0-5]", RUN+="${config.systemd.package}/bin/systemctl suspend -i"
-    percentageLow = 15;
+  '';
-    percentageCritical = 10;
-    percentageAction = 7;
-  };
 }