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kokkos / mdspan

Reference implementation of mdspan targeting C++23
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BSD license for inclusion in SciPy? #321

Closed izaid closed 4 months ago

izaid commented 7 months ago

Hello all! Thanks for making such a great reference implementation of std::mdspan available.

Over at SciPy, we've been considering using exactly this implementation to help us with some C++ <> NumPy interoperability for special function computations [1]. However, there appears to be an issue in that SciPy is distributed under the BSD license, and specifically finds Apache licenses incompatible. The details are at http://scipy.github.io/devdocs/dev/core-dev/index.html#licensing

Is there any chance kokkos/mdspan would be willing to grant us something under the BSD license? Or if anyone has any thoughts on another way we can include this std::mdspan reference implementation in a way that is compatible with SciPy's policy?

Many thanks!

[1] You can see the issue at https://github.com/scipy/scipy/pull/20320, but a lot of the details are not relevant here.

crtrott commented 7 months ago

Note that we are under Apache-2 with LLVM Exceptions. Thus no attribution is required in binary code, and you just need to not delete our license notice in headers you copy.

lucascolley commented 4 months ago

this can probably be closed now - mdspan.hpp was included in SciPy following discussion in scipy/scipy#20396