{
  lua5_3
, stdenv
, makeWrapper
}:
let
  pname = "certifix";
  lua = lua5_3.withPackages (ps: [
#      ps.dkjson
#      ps.lpeg
    ps.http
    ps.luaposix
  ]);
  inherit makeWrapper;
  inherit (lua.pkgs) fennel;
in stdenv.mkDerivation {
  inherit pname;
  version = "0.1";
  src = ./.;
  makeFlags = [ "TARGET=${placeholder "out"}" ];
  postInstall = ''
     lua_path="`lua -e 'print(package.path)'`"
     lua_cpath="`lua -e 'print(package.cpath)'`"

     makeWrapper ${fennel}/bin/fennel \
      $out/bin/${pname} \
      --add-flags "--add-fennel-path $out/lib/?.fnl" \
      --add-flags "--add-package-path '$out/lib/?.lua$lua_path'" \
      --add-flags "--add-package-cpath '$out/lib/?.lua$lua_cpath'" \
      --add-flags "$out/lib/main.fnl"
  '';
  buildInputs = [lua fennel];
  nativeBuildInputs = [ makeWrapper ];
}