Add Lenovo ThinkPad T420 profile

README.md

@@ -43,6 +43,7 @@ See code for all available configurations.
 | Lenovo IdeaPad Z510               | `<nixos-hardware/lenovo/ideapad/z510>`             |
 | Lenovo ThinkPad P53               | `<nixos-hardware/lenovo/thinkpad/p53>`             |
 | Lenovo ThinkPad T410              | `<nixos-hardware/lenovo/thinkpad/t410>`            |
+| Lenovo ThinkPad T420              | `<nixos-hardware/lenovo/thinkpad/t420>`            |
 | Lenovo ThinkPad T430              | `<nixos-hardware/lenovo/thinkpad/t430>`            |
 | Lenovo ThinkPad T440s             | `<nixos-hardware/lenovo/thinkpad/t440s>`           |
 | Lenovo ThinkPad T440p             | `<nixos-hardware/lenovo/thinkpad/t440p>`           |

lenovo/thinkpad/t420/default.nix

@@ -0,0 +1,9 @@
+{ config, lib, pkgs, ... }:
+
+{
+  imports = [
+    ../.
+    ../../../common/cpu/intel
+    ../../../common/pc/laptop/acpi_call.nix
+  ];
+}