Use latest kernel at gandalf

systems/gandalf/default.nix

@@ -17,6 +17,8 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
   networking.hostName = "gandalf";
   networking.networkmanager.enable = true;
   networking.nameservers = [ "192.168.68.56" "1.1.1.1" "8.8.8.8" ];