I did built WHL from src code for mlx for python3.14t on MacOS ARM

[MaiHoangViet1809]

I have built a cp314t wheel for macOS arm64 from commit b663c6e. Environment:

• macOS version: 26.0.1 (Build 25A362)
• Xcode/CLT version: Xcode 26.0.1 (Build 17A400)
• Python version: 3.14.2 (cp314t)
• CMake version: 3.26.1
• MLX commit hash: b663c6edad239c2348a5ec201ed96522b3451ebc

Hope it will help for people need this on python3.14t (I struggled at pip install mlx on python 3.14t) in MacOS ARM.

Build instructions (exact)

  # in /mlx-0.30.3
  uv venv .venv-build -p python3.14t
  source .venv-build/bin/activate
  python -m ensurepip --upgrade
  python -m pip install --upgrade setuptools wheel

  # clean
  python - <<'PY'
  import os, shutil
  for name in ('build','dist'):
      if os.path.isdir(name):
          shutil.rmtree(name)
  for fn in os.listdir('.'):
      if fn.endswith('.so'):
          os.remove(fn)
  PY

  # build wheel
  python -m pip wheel . -w dist --no-build-isolation

  # verify ABI
  unzip -l dist/mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.whl | rg 'core\\.cpython-314t'

Wheel tag: mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.whl

Upload WHL contribute

mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.tgz.part_aa.zip
mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.tgz.part_ab.zip

Recombine:
cat mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.tgz.part_aa.zip
mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.tgz.part_ab.zip
> mlx-0.30.3.dev20260128+b663c6e-cp314-cp314t-macosx_26_0_arm64.tgz