Conor MacBride

This appears to be successfully building the pure Python wheel, with just an env var set!

`feature` or `trivial` changelog?

I tagged to close #5772 as I think aarch64 wheels without the ana extension would be sufficient for almost all users.

Good idea! I changed the message to: > C extension for ANA is missing. For more details see: https://docs.sunpy.org/en/stable/installation.html#installing-without-conda

I've reworded the info on the Python wheels in the installation guide. I've stated what platforms have a complied wheel, and made it clear that all other Python implementations and...

Only partly resolved. All packages in the dependency tree must be pure Python or have binaries bundled with the app. That said, I think we've now done all we can...

Actually, this might even be resolved without a sunpy pure Python wheel!? I tried installing sunpy in Carnets and it was able to build from the sdist and install all...

For Carnets, as far as I can tell the only packages preventing `pip install sunpy[all]` are scikit-image, h5py and reproject. I'm not sure which exactly are compiled. The dependencies are...

I'm quite sure pytest doesn't support yielding inside a test function, however, this workaround seems the easiest solution. It dynamically creates test methods in the test class. You just give...

I believe the differences are due to pytest-mpl using the `classic` style by default. [(Matplotlib changed their default style in v2.0)](https://matplotlib.org/stable/users/prev_whats_new/dflt_style_changes.html) To use Matplotlib's current default style in pytest-mpl, test...