{ stdenv, buildPackages, fetchurl, perl, buildLinux, ... } @ args: buildLinux (args // rec { version = "4.9.142"; extraMeta.branch = "4.9"; src = fetchurl { url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz"; sha256 = "01n4v0gpf8xyz8hzc70mhjha7kanz9pv248ypsmab7zpzgd7wjil"; }; } // (args.argsOverride or {}))