Description
Describe the issue:
It seems there is still an issue importing 1.26.4 on macOS <13.3 (namely 12.4, 13.0, 13.1)
Here a few reports from Blender users meeting the error importing numpy (Blender is just bundling numpy 1.26.4):
- https://projects.blender.org/blender/blender/issues/139221
- https://projects.blender.org/blender/blender/issues/140369
- Bonsai is requiring macOS 13.3+ to work IfcOpenShell/IfcOpenShell#6798
The import error is regarding missing _cblas_caxpy symbol, which was added in 13.3+. Ref
Error message
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.
We have compiled some common reasons and troubleshooting tips at:
https://numpy.org/devdocs/user/troubleshooting-importerror.html
Please note and check the following:
* The Python version is: Python3.11 from "/Applications/Blender.app/Contents/Resources/4.4/python/bin/python3.11"
* The NumPy version is: "1.26.4"
and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.
Original error was: dlopen(/Applications/Blender.app/Contents/Resources/4.4/python/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so, 0x0002): Symbol not found: _cblas_caxpy$NEWLAPACK
Referenced from: <45695925-8A9B-3807-BFD1-EE483318290D> /Applications/Blender.app/Contents/Resources/4.4/python/lib/python3.11/site-packages/numpy/core/_multiarray_umath.cpython-311-darwin.so
Expected in: <E6C2D470-8878-372D-B9DB-0EDCA1303272> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
This issue came up before in #25026 and it seems to be resolved, but I guess it was never backported to numpy <2.0 or there is some other issue at play?
I understand that 1.26 is about to get dropped (on Sep 16, 2025, according to https://numpy.org/neps/nep-0029-deprecation_policy.html#support-table), but it still the main version used by VFX platform and therefore by Blender and all tools build on top of them and they plan to keep 1.26 for the next year too:
So shouldn't this fix be backported to 1.26?
Or if it's too late for a backport, then pypi should specify that only macOS 13.3+ supported, instead of 11.0, so the requirement would be more explicit, instead of running into an error on import, trying to use the latest 1.x version.
(https://pypi.org/project/numpy/1.26.4/#files)
Reproduce the code example:
import numpy as npPython and NumPy Versions:
1.26.4, 3.11.11