syn/rebar.config

{erl_opts, [debug_info]}.
{deps, []}.

{profiles, [
    {docs, [
        {edoc_opts, [
            {preprocess, true},
            {doclet, edoc_doclet_chunks},
            {layout, edoc_layout_chunks},
            {dir, "_build/default/lib/syn/doc"}]
        }
    ]}
]}.