Import of custom binded types

[petrasvestartas]

Following is a strange behavior of nanobind that I would like to ask exaplanation why.

I bind such custom types:

#include "types_std.hpp"

NB_MODULE(_types_std, m) {

    nb::bind_vector<std::vector<double>>(m, "VectorDouble");
    nb::bind_vector<std::vector<int>>(m, "VectorInt");
    nb::bind_vector<std::vector<bool>>(m, "VectorBool");
    nb::bind_vector<std::vector<std::vector<int>>>(m, "VectorVectorInt");
    nb::bind_vector<std::vector<compas::RowMatrixXd>>(m, "VectorRowMatrixXd");
    nb::bind_vector<std::vector<std::tuple<int, float, float, float>>>(m, "VectorTupleIntFloatFloatFloat");
    nb::bind_vector<std::vector<std::vector<std::tuple<int, float, float, float>>>>(m, "VectorVectorTupleIntFloatFloatFloat");
}

In python I load other nanobind submodules and install in another conda environment:

If I run an example from another project in my conda evironment this is most often not found:
from compas_libigl_types_std import VectorVectorInt # noqa: F401

The only solution is the following:
from compas_libigl import _types_std # noqa: F401 (edited)

Typically we get such error:

[petrasvestartas]

This problem is very persistent and hard to understand. Even this solution does not work properly.

Defining types in one nanobind module and using in another nanobind module very often does not work.

This is the repo: https://github.com/compas-dev/compas_libigl.git

Please explain why this happens:

[petrasvestartas]

I gave up on this and use instead type casters