We've recently ported a pretty complex project with C, C++ and Cython used as Python extensions to sikit-build-core.

We got it all working on Mac an Linux, but on Windows, we're having some issues.

(Using Powershell: it seems to be required by our CI)

Our first attempt resulted in it building for x86 instead of x64 -- it turns out that we had (carelessly ) used a Powershell configured for x86. And we're making progress with a generic powershell and activating the x64 compiler with: vcvars64.bat.

However -- shouldn't scikit-build (or cmake) figure that out for us, and call the right compiler, based on the Python that's doing the build? I'm a bit concerned that setting it up by hand ahead of time is a bit fragile for less experienced uses and CI systems, etc.

Or is that just that way it is?

Note: this could be related to #590 -- though that made me think that it should "just work"

-CHB