Numpy should use Apple Accelerate instead of OpenBLAS on Apple Silicon

[vlebert]

brew gist-logs <formula> link OR brew config AND brew doctor output

❯ brew config
HOMEBREW_VERSION: 4.3.15
ORIGIN: https://github.com/Homebrew/brew
HEAD: fa53e7b1e51a2deb7ec5a1e12452a1182dc342f7
Last commit: 3 days ago
Core tap JSON: 15 Aug 08:25 UTC
Core cask tap JSON: 15 Aug 08:25 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 10
Homebrew Ruby: 3.3.4 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.4_1/bin/ruby
CPU: 10-core 64-bit arm_firestorm_icestorm
Clang: 15.0.0 build 1500
Git: 2.39.3 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.6.0 => /usr/bin/curl
macOS: 14.5-arm64
CLT: 15.3.0.0.1.1708646388
Xcode: N/A
Rosetta 2: false

❯ brew doctor
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Verification

• [X] My brew doctor output says Your system is ready to brew. and am still able to reproduce my issue.
• [X] I ran brew update and am still able to reproduce my issue.
• [X] I have resolved all warnings from brew doctor and that did not fix my problem.
• [X] I searched for recent similar issues at https://github.com/Homebrew/homebrew-core/issues?q=is%3Aissue and found no duplicates.

What were you trying to do (and why)?

Initially I used miniconda for python on my Mac M1 but now, python provided by brew is compatible with Apple Silicon.

I am trying to use homebrew python on my mac

What happened (include all command output)?

Numpy is installed as a dependency for different packages on my system, however provided installation is not optimized for apple silicon.

see https://github.com/numpy/numpy/issues/24961

On my machine :

> python3
> import numpy
> numpy.show_config()

...
"Build Dependencies": {
    "blas": {
      "name": "openblas",
      "found": true,
      "version": "0.3.27",
      "detection method": "system",
      "include directory": "unknown",
      "lib directory": "unknown",
      "openblas configuration": "unknown",
      "pc file directory": "unknown"
    },

...

> python3 -m venv .env
> source .env/bin/activate
> pip install numpy
> python
> import numpy
> numpy.show_config()

...
"Build Dependencies": {
    "blas": {
      "name": "accelerate",
      "found": true,
      "version": "unknown",
      "detection method": "system",
      "include directory": "unknown",
      "lib directory": "unknown",
      "openblas configuration": "unknown",
      "pc file directory": "unknown"
    },
...

Running performance test is up to 10 time more efficient in my .env than in my system. I suppose this can slow up all packages depending on system numpy

What did you expect to happen?

Numpy provided by brew should be compiled with Apple Silicon optimizations.

Step-by-step reproduction instructions (by running brew commands)

See previous section