Hi all,

I'd like to solicit the feedback of maintainers of NumPy, SciPy, scikit-learn, and scikit-image, and other interested community members on this blog post and proposed design to enable multiple array types in SciPy, scikit-learn, scikit-image and other libraries in this ecosystem: https://labs.quansight.org/blog/2021/11/pydata-extensibility-vision/. Because this design is meant to be shared across projects, it would be great to discuss it in a central place. The new https://discuss.scientific-python.org/ seems like a good venue for that. Here are two separate forum threads for this:

- for the big picture: https://discuss.scientific-python.org/t/a-proposed-design-for-supporting-multiple-array-types-across-scipy-scikit-learn-scikit-image-and-beyond/131

- for the most tricky design decision (user-facing switch & default behavior): https://discuss.scientific-python.org/t/default-dispatching-behavior-for-supporting-multiple-array-types-across-scipy-scikit-learn-scikit-image/135

Thanks in advance for any input!

Cheers,

Ralf