{ stdenv, buildPackages, fetchurl, perl, buildLinux, ... } @ args: buildLinux (args // rec { version = "4.9.149"; extraMeta.branch = "4.9"; src = fetchurl { url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz"; sha256 = "10yp6pf91h927bxnb32qd6y13m0a230d44gp70ifd6cg5ssd6nqn"; }; } // (args.argsOverride or {}))