Sphinx autosummary and submodules for c/c++ python extension

[tdavidcl]

Hi,

I have a project in c++ that use pybind11 to generate a python module.
When i use autosummary to generate the doc most things works, except for the detection of submodules.

When i look up in sphinx/ext/autosummary/generate.py it seems that it use the module __path__ variable to look for __init__.py files

def _get_modules(
    obj: Any,
    *,
    skip: Sequence[str],
    name: str,
    public_members: Sequence[str] | None = None,
) -> tuple[list[str], list[str]]:
    items: list[str] = []
    public: list[str] = []
    for _, modname, _ispkg in pkgutil.iter_modules(obj.__path__):
        if modname in skip:
            # module was overwritten in __init__.py, so not accessible
            continue
        ...

However here no module posses a __path__ variable which may explain why

{% block modules %}
{% if modules %}
.. rubric:: Modules

.. autosummary::
:toctree: {{ fullname }}/submodules

{% for submodule in modules %}
{{ fullname }}.{{ submodule }}
{% endfor %}
{% endif %}
{% endblock %}

Does nothing in my case to list submodules.

Is this intended and can i change the behavior here to recurse also the submodules ?