{ stdenv, buildPackages, fetchurl, perl, buildLinux, ... } @ args: buildLinux (args // rec { version = "4.9.140"; extraMeta.branch = "4.9"; src = fetchurl { url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz"; sha256 = "0hzrha3rh90jwxjmrh4npd0q56pf512nmb8i2p484k9cikssx27q"; }; } // (args.argsOverride or {}))