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They don't build on Windows at all, as well.

Not true!

We release Windows CPU wheels (https://pypi.org/project/jaxlib/#files). So JAX on CPU works great on Windows.

We don't release Windows GPU wheels at the moment, but that's because we're a small team and none of us use Windows personally. We welcome contributions!

(I verified that the Windows CUDA GPU support built as recently as two weeks ago, but I don't have the ability to test that it works.)

We recommend WSL2 because that's just using our existing Linux CUDA release.

Oops so sorry. But this is recent isn't it? I thought it was actually due to XLA/Bazel not supporting it?

Yes, we made this more formally supported recently.

We felt that Windows CPU support was important so everyone can run JAX, even if it's not always the most-accelerated version of JAX. And we got some great PRs from the community that helped fix a few open issues.

Very nice! I just installed, I hope to eventually contribute down the line, especially in terms of custom operators. They weren't even document until recently, and there's still quite some work to add them.

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