diff --git a/microsoft/surface/kernel/default.nix b/microsoft/surface/kernel/default.nix
index b266919..1920dfe 100644
--- a/microsoft/surface/kernel/default.nix
+++ b/microsoft/surface/kernel/default.nix
@@ -1,16 +1,12 @@
-{ lib,
-  buildLinux,
-  callPackage,
-  linuxPackagesFor,
-  ...
-}:
+{ config, lib, pkgs, ... }:
 
 # To test the kernel build:
 # nix-build -E "with import <nixpkgs> {}; (pkgs.callPackage ./. {}).boot.kernelPackages.kernel"
 
 let
   inherit (lib) kernel recurseIntoAttrs;
-  repos = callPackage ../repos.nix {};
+  inherit (pkgs) buildLinux linuxPackagesFor;
+  repos = pkgs.callPackage ../repos.nix {};
 
   linuxPackage =
     { version,
@@ -25,11 +21,11 @@ let
         modDirVersion = version;
         extraMeta.branch = branch;
       };
-      linuxPackagesFor' = (linuxPackagesFor buildLinux');
+      linuxPackagesFor' = linuxPackagesFor buildLinux';
     in recurseIntoAttrs linuxPackagesFor';
 
   linux-5_16_11 = linuxPackage (
-    callPackage ./linux-5.16.11.nix { inherit repos; }
+    pkgs.callPackage ./linux-5.16.11.nix { inherit repos; }
   );
 
 in {
diff --git a/microsoft/surface/repos.nix b/microsoft/surface/repos.nix
index 3ee09a9..42e31de 100644
--- a/microsoft/surface/repos.nix
+++ b/microsoft/surface/repos.nix
@@ -1,4 +1,4 @@
-{ lib, pkgs, fetchFromGitHub, fetchurl }: {
+{ fetchFromGitHub, fetchurl }: {
   # This is the owner and repo for the pre-patched kernel from the "linux-surface" project:
   linux-surface-kernel = { rev, sha256 }:
     fetchFromGitHub {