BLD: Build wheels using numpy 2.0rc1

[lithomas1]

• closes INFO: Please pin your numpy < 2 if installing pandas via pip #55519 (Replace xxxx with the GitHub issue number)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

[mroeschke]

Thanks @lithomas1

[rgommers]

@lithomas1 @mroeschke this doesn't look correct to me. I just checked one CI log and it shows this after the "before build" step (re-installs numpy 1.26.4):

     Successfully installed Cython-3.0.9 meson-1.2.1 meson-python-0.13.1 numpy-1.26.4 packaging-24.0 pyproject-metadata-0.7.1 tomli-2.0.1 versioneer-0.29 wheel-0.43.0
    Installing build dependencies: finished with status 'done'

This is due to build isolation. The [build-requires] section in pyproject.toml needs updating instead, it needs something like "numpy>=2.0.0rc1,<2.3", (or <3 if you prefer) EDIT: in release branches, and "numpy>=2.0.0rc1 in main. I recommend copying what SciPy does (except change 2.0.0b1 to 2.0.0rc1 now):
https://github.com/scipy/scipy/blob/2a8c4ca6edceba5daaac60bbd213a84e7c03c361/pyproject.toml#L28-L34

[lithomas1]

@lithomas1 @mroeschke this doesn't look correct to me. I just checked one CI log and it shows this after the "before build" step (re-installs numpy 1.26.4):

     Successfully installed Cython-3.0.9 meson-1.2.1 meson-python-0.13.1 numpy-1.26.4 packaging-24.0 pyproject-metadata-0.7.1 tomli-2.0.1 versioneer-0.29 wheel-0.43.0
    Installing build dependencies: finished with status 'done'

This is due to build isolation. The [build-requires] section in pyproject.toml needs updating instead, it needs something like "numpy>=2.0.0rc1,<2.3", (or <3 if you prefer) EDIT: in release branches, and "numpy>=2.0.0rc1 in main. I recommend copying what SciPy does (except change 2.0.0b1 to 2.0.0rc1 now): https://github.com/scipy/scipy/blob/2a8c4ca6edceba5daaac60bbd213a84e7c03c361/pyproject.toml#L28-L34

Nice catch, thanks!

I was thinking in my head that editable installations would be messed up by the build-requires, but that obviously uses -no-build-isolation 🤦 .

I'll put up another PR fixing this.