Completed centralized update

nixos/laptop.nix

@@ -0,0 +1,27 @@
+{ config, lib, ... }:
+{
+  # SSD swappines
+  boot.kernel.sysctl = {
+    "vm.swappiness" = lib.mkDefault 1;
+  };
+
+  # Atheros WiFi module
+  boot.blacklistedKernelModules = lib.optionals (!config.hardware.enableRedistributableFirmware) [
+    "ath3k"
+  ];
+
+  # ACPI support
+  boot = {
+    kernelModules = [ "acpi_call" ];
+    extraModulePackages = with config.boot.kernelPackages; [ acpi_call ];
+  };
+
+  # Touchpad support
+  services.xserver.libinput.enable = lib.mkDefault true;
+
+  # SSD trim service
+  services.fstrim.enable = lib.mkDefault true;
+
+  # Hard disk protection if the laptop falls:
+  services.hdapsd.enable = lib.mkDefault true;
+}