{ stdenv, fetchurl, perl, buildLinux, ... } @ args:

import ./generic.nix (args // rec {
  version = "4.9.20";
  extraMeta.branch = "4.9";

  src = fetchurl {
    url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz";
    sha512 = "3israf7zhq92wi0py8y299f7cz6z6xr0y4i5b1xvb46ljyx39jwrrdjrf5nxngz6c1641l9qalwzg5r15pp4gqyr09ilmwn8i7kbqwi";
  };

  kernelPatches = args.kernelPatches;

  features.iwlwifi = true;
  features.efiBootStub = true;
  features.needsCifsUtils = true;
  features.netfilterRPFilter = true;
} // (args.argsOverride or {}))