anchor.diff:      TarFile = filename:join(OutputDir, Name++"-"++Vsn++".tar.gz"),
       file:rename(filename:join(OutputDir, Name++".tar.gz"), TarFile),
       erl_tar:extract(TarFile, [{cwd, TempDir}, compressed]),
  +    OverlayFiles = overlay_files(rlx_state:get(State, overlay, undefined), OutputDir),
       ok =
           erl_tar:create(TarFile,
                          [{"lib", filename:join(TempDir, "lib")},
  
positive.code:                                 [];
                              _ ->
                                  [{"erts-"++ErtsVersion, filename:join(OutputDir, "erts-"++ErtsVersion)}]
                          end], [compressed]),
      ec_cmd_log:info(rlx_state:log(State),
                   "tarball ~s successfully created!~n", [TarFile]),
      ec_file:remove(TempDir, [recursive]),
      {ok, State}.
  
  
negative.code:     {ok, State}.
  
  -spec do(rlx_state:t()) -> {ok, rlx_state:t()} | relx:error().
  do(State) ->
      {RelName, RelVsn} = rlx_state:default_configured_release(State),
      Release = rlx_state:get_realized_release(State, RelName, RelVsn),
      OutputDir = rlx_state:output_dir(State),
      make_tar(State, Release, OutputDir).
  
  format_error({tar_unknown_generation_error, Module, Vsn}) ->
      io_lib:format("Tarball generation error of ~s ~s",
  