{ callPackage, fetchurl, ... } @ args: callPackage ./generic.nix (args // rec { version = "3.4.1"; src = fetchurl { url = "ftp://ftp.gnutls.org/gcrypt/gnutls/v3.4/gnutls-${version}.tar.lz"; sha256 = "06wiwsydfpy5fn86ip4x2s507483l4y847kr1p2chgjw0wqc8vjy"; }; })