The *correct* way to override the latest kernel config

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There is a boot.kernelPatches option you can (mis-)use to add additional configuration:

{ lib, ... }:

{
  boot.kernelPatches = lib.singleton {
    name = "enable-lirc";
    patch = null;
    extraConfig = ''
      LIRC y
    '';
  };
}

This will affect the kernel you’re using in boot.kernelPackages.

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