pyarrow 25.0.0 for Windows ARM64 (cp311)

Native pyarrow 25.0.0 for Windows ARM64, built from Apache Arrow C++ 25.0.0 (tag apache-arrow-25.0.0, commit 59bea6e) using the configuration extracted from Arrow's own msvc-arm64 CI job. Built and verified 2026-07-13 on Snapdragon X Elite (VS 2022 Build Tools 17.14.35, MSVC 14.44.35207 native ARM64, Ninja, bundled deps).

Asset: pyarrow-25.0.0-cp311-cp311-win_arm64.whl

• 15,196,861 bytes
• sha256: 240c476c26a10e7d83d3f899ad66839b819d3d973ee60673a7af787962ea3a3a
• CPython 3.11 ARM64 only; delvewheel-repaired (msvcp140 mangled) so it coexists with torch's CRT runtime in the same venv
• Codecs: gzip / zstd / lz4 / snappy / brotli yes; bz2 no (by design — README §5)

Install:

python -m pip install pyarrow-25.0.0-cp311-cp311-win_arm64.whl
python smoke_pyarrow.py          :: expect PYARROW_SMOKE_OK
python -m pip install datasets trl
python smoke_datasets.py         :: expect DATASETS_SMOKE_OK

Verified downstream: real datasets 5.0.0 + trl 1.8.0 install clean; a full training-pipeline dry-run passed with exact parameter parity against WSL2; 230-project-test suite green. Full field guide, build scripts, and evidence: the repo README.

License: PolyForm Noncommercial 1.0.0 (see LICENSE).