NumPy 2.0 support

[jakirkham]

NumPy 2.0 is coming out soon ( numpy/numpy#24300 ). NumPy 2.0.0rc1 packages for conda & wheels came out 3 weeks back ( numpy/numpy#24300 (comment) )

To prepare for NumPy 2.0, it might be worthwhile to start testing against NumPy 2 in CI

NumPy has put out a migration guide. More details are in the release notes

Also as NumPy is tracking ecosystem support for NumPy 2.0, it would be helpful to share Zarr's current support status in issue (with any plans): numpy/numpy#26191

[jakirkham]

This will depend on migrating Numcodecs: zarr-developers/numcodecs#521

Edit: Numcodecs appears to pass tests with NumPy 2. Would still be good to test Numcodecs on CI, but that is not a blocker for Zarr

[jhamman]

@jakirkham - do you want to try to drop in numpy==2 to the test matrix on the v3 branch here:

zarr-python/pyproject.toml

Line 115 in 096c900

numpy = ["1.24", "1.26"]

[jakirkham]

Fixed in the Zarr 2.x line with the PR linked below in 2.18.0

• use np.inf instead of PINF/NINF #1842

Also fixed in Zarr 3.x with the PR linked below

• chore(ci): add numpy 2 release candidate to test matrix #1828

Closing as completed