This is a collection of tools for using Eigen together with nanobind, as a successor to the eigenpy support library. Its aim is to help the transition away from Boost.Python.
It reintroduces a few features (e.g. bindings for Eigen matrix decompositions) which are not in nanobind at time of writing.
Eigenpy was based on Boost.Python, an aging, complex, heavily templated library with little community support.
Support for many library features initially present in Boost, and which were added to the STL since C++11/14/17, for over a decade (nearly two), were just never added in Boost.Python. This includes support for {boost,std}::optional, {boost,std}::variant, {boost,std}::unique_ptr, proper support for map types... whereas they have been present in pybind11, and now nanobind, for years.
These features were finally added to eigenpy with a lot of developer effort. This created additional need for supporting these additional features ourselves, including many downstream consumers (mainly in the robotics community).
- the Eigen C++ template library - conda-forge / GitLab
- nanobind