New release `3.9.0` is only compatible with `numpy>=2.0` but requirements specify `numpy>=1.26`

[joshuacwnewton]

Downstream ref: spinalcordtoolbox/spinalcordtoolbox#5041

blosc2 just updated to 3.9.0, and we started getting errors in our test suite:

  File "/home/runner/work/spinalcordtoolbox/spinalcordtoolbox/python/envs/venv_sct/lib/python3.10/site-packages/acvl_utils/cropping_and_padding/bounding_boxes.py", line 5, in <module>
    import blosc2
  File "/home/runner/work/spinalcordtoolbox/spinalcordtoolbox/python/envs/venv_sct/lib/python3.10/site-packages/blosc2/__init__.py", line 174, in <module>
    isdtype = np.isdtype
  File "/home/runner/work/spinalcordtoolbox/spinalcordtoolbox/python/envs/venv_sct/lib/python3.10/site-packages/numpy/__init__.py", line 333, in __getattr__
    raise AttributeError("module {!r} has no attribute "
AttributeError: module 'numpy' has no attribute 'isdtype'. Did you mean: 'dtype'?

Relevant LOC:

python-blosc2/src/blosc2/__init__.py

Line 174 in 13aca7a

isdtype = np.isdtype

We install numpy==1.26.4 because we have not yet migrated to numpy==2.0. It looks like isdtype is a numpy 2.0-specific feature (switching to 1.26 in the docs leads to a 404).

However, blosc2-python specifies 1.26 compatibility in its pyproject.toml:

python-blosc2/pyproject.toml

Lines 35 to 36 in a1ba153

	"numpy>=1.26",
	#"numpy>=2",

Meaning it can be installed alongside the (incomptable) 1.26, leading to this failure.

[FrancescAlted]

Thanks for the heads-up. We will try to bump the required numpy version and release 3.9.1 as soon as possible. Meanwhile, you can restrict your package to use blosc2<3.9.0.

[FrancescAlted]

FWIW, we have bumped minimum numpy version to 2.1 (released more than a year ago). This will at least allow people to compile (and run!) python-blosc2 from sources in main without issues.

[FrancescAlted]

Fixed in released 3.9.1. Now the minimum requisite continues to be numpy 1.26.

[joshuacwnewton]

Thank you for ensuring backwards compatibility. Much appreciated. ♥️

Relevant commits/PRs that fix this issue (for posterity):

• 572ea0f
• 1ed28a8
• 41b5d74
• Add test with numpy 1.26 #489