{ stdenv, buildPackages, fetchurl, perl, buildLinux, ... } @ args: buildLinux (args // rec { version = "4.4.249"; extraMeta.branch = "4.4"; src = fetchurl { url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz"; sha256 = "04pb4vgia6zaindf6804gq9jn3mhmy01yijqmpi79sh9rlqzzh1i"; }; } // (args.argsOverride or {}))