numpy build fail in M1 Big sur 11.1

I had exactly the same issue with my brand new Mac Mini. After spending an afternoon reading this issue on github, I finally succeeded. However, it only seems to work with v1.20.0rc2 or above...

Long story short, these were the steps I've taken to get it working:

pip3 install Cythongit clone https://github.com/numpy/numpy.git cd numpypip3 install . --no-binary :all: --no-use-pep517

After that, I could cd into my virtualenv and import numpy:

>>> import numpy as np>>> np.__version__'1.21.0.dev0+402.gc4ae3ce64'>>> 

Next up: pandas.

UPDATE:After some more searching, I found this interesting article, which states that you can easily start Terminal in Rosatta mode. That also solved the issues.

However, I am working with a headless Mac Mini, so I still have to find out whether that solution also is feasable in that particular setup.

UPDATE 2

I now have pandas working as well, thanks to this answer on SO.

Yes, numpy still seems to be not supported in stable, but if you are ready to work with unstable version try this command:

pip3 install numpy --compile --pre

This will recompile all the necessary code from unstable branch.

Worked for me.

Note that the only reliable build environment for the full data-science suite for python at the moment (Feb 2021) on M1 ARM architecture is via miniforge.

e.g.

brew install --cask miniforgeconda init zshconda activateconda install numpy scipy scikit-learn