args @ { fetchurl, ... }:
rec {
  baseName = ''ironclad'';
  version = ''ironclad_0.33.0'';

  description = ''A cryptographic toolkit written in pure Common Lisp'';

  deps = [ args."nibbles" ];

  src = fetchurl {
    url = ''http://beta.quicklisp.org/archive/ironclad/2014-11-06/ironclad_0.33.0.tgz'';
    sha256 = ''1ld0xz8gmi566zxl1cva5yi86aw1wb6i6446gxxdw1lisxx3xwz7'';
  };

  overrides = x: {
    postInstall = ''
        echo "$CL_SOURCE_REGISTRY"
        NIX_LISP_PRELAUNCH_HOOK='nix_lisp_run_single_form "(asdf:load-system :ironclad)"' "$out/bin/ironclad-lisp-launcher.sh" ""
    '';
  };
}