Fix Cython compile for v3.0.0 release

[lhutton1]

Cython v3.0.0 was recently released (https://github.com/cython/cython/releases/tag/3.0.0) and is used in newly built docker images. This causes a compilation issue since 3.0.0 expects function definitions to be explicitly declared with the noexcept annotation. This change should be backwards compatible to v0.29.31. For more details see the discussion here: scipy/scipy#17234 (comment).

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[lhutton1]

Windows and MacOS builds are failing as they use cython==0.29.24 and cython==0.29.28 respectively, which are not compatible with the new noexcept keyword. This functionality was added in 0.29.31 (https://github.com/cython/cython/blob/master/CHANGES.rst#02931-2022-07-27). We could either upgrade the Windows and MacOS builds to use a newer version of cython (I'm not too sure yet how to get later versions in conda), or we can constrain the version in main CI to >=0.29.31, <= 0.29.36.

[Mousius]

My guess would be that because the Conda build uses 3.7 of Python, it isn't receiving newer builds of Cython.

tvm/conda/build-environment.yaml

Line 28 in e2d6511

- python=3.7 # or 3.8. See https://github.com/apache/tvm/issues/8577 for more details on >= 3.9

That may be quite concerning given 3.7 just passed end of life (https://devguide.python.org/versions/).

[tqchen]

We can remove the 3.7 here from tehe build env

[junrushao]

Let's get this PR merged instead!

[lhutton1]

After updating the python version to 3.8, the same issues mentioned in #15346 (comment) seem to persist

For MacOS (I didn't check windows yet), it seems there are updated cython packages available on this channel https://repo.anaconda.com/pkgs/main/osx-64/ for python 3.8, but conda seems to prefer fetching packages from a different outdated channel (https://conda.anaconda.org/anaconda/osx-64/), I'm a little bit lost here..

[lhutton1]

I've tried reproducing the conda environment used for MacOS locally with this patch checked out, although I've been unable to recreate the same failure. The latest version of cython 3.0.0 is successfully installed when running: conda env create --file conda/build-environment.yaml on an M1 Mac.

[tqchen]

#15469 likely supersedes this. We can still work to upgrade the python conda versions to 3.8 or later

[lhutton1]

Closing in favour of #15469, thanks @tqchen! Let's pull the conda python version upgrade into a separate PR