thinkpad: use lib.mkDefault on all unmergable options

lenovo/thinkpad/default.nix

@@ -1,16 +1,12 @@
 { lib, pkgs, ... }:
 
-let
-  inherit (lib) mkDefault;
-in
-
 {
   boot = {
     kernelModules = [ "tp_smapi" ];
     extraModulePackages = with config.boot.kernelPackages; [ tp_smapi ];
   };
 
-  hardware.trackpoint.enable = mkDefault true;
-  services.tlp.enable = mkDefault true;
-  services.xserver.libinput.enable = mkDefault true;
+  hardware.trackpoint.enable = lib.mkDefault true;
+  services.tlp.enable = lib.mkDefault true;
+  services.xserver.libinput.enable = lib.mkDefault true;
 }

lenovo/thinkpad/t410/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
   imports = [ ../. ];
@@ -28,7 +28,7 @@
     ];
   };
 
-  hardware.cpu.intel.updateMicrocode = true;
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault true;
 
   systemd.services.tune-powermanagement = {
     description = "Tune Powermanagement";

lenovo/thinkpad/t440p/default.nix

@@ -1,10 +1,10 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
   imports = [ ../. ];
 
   boot = {
-    extraModprobeConfig = ''
+    extraModprobeConfig = lib.mkDefault ''
       options bbswitch use_acpi_to_detect_card_state=1
     '';
     kernelModules = [ "tpm-rng" ];

lenovo/thinkpad/t460s/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
   imports = [
@@ -7,8 +7,8 @@
   ];
 
   # Use the gummiboot efi boot loader. (From default generated configuration.nix)
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+  boot.loader.systemd-boot.enable = lib.mkDefault true;
+  boot.loader.efi.canTouchEfiVariables = lib.mkDefault true;
 
   # https://wiki.archlinux.org/index.php/Lenovo_ThinkPad_T460s
   kernelAtleast = [

lenovo/thinkpad/x140e/default.nix

@@ -9,7 +9,7 @@
     extraModulePackages = [ config.boot.kernelPackages.broadcom_sta ];
 
     # audio device
-    extraModprobeConfig = ''
+    extraModprobeConfig = lib.mkDefault ''
       options snd_hda_intel enable=0,1
     '';
   };

lenovo/thinkpad/x220/default.nix

@@ -1,10 +1,10 @@
-{ config, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
 {
   imports = [ ../. ];
 
   # hard disk protection if the laptop falls
-  services.hdapsd.enable = true;
+  services.hdapsd.enable = lib.mkDefault true;
 
   # fingerprint reader: login and unlock with fingerprint (if you add one with `fprintd-enroll`)
   #services.fprintd.enable = true;