{ stdenv, buildPackages, fetchurl, perl, buildLinux, ... } @ args: buildLinux (args // rec { version = "4.9.180"; extraMeta.branch = "4.9"; src = fetchurl { url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz"; sha256 = "0pvw71yiwwf19qxqkm68dw4c9sl54n367q9kfdc6msd3c86ljnnj"; }; } // (args.argsOverride or {}))