doc/source/release/1.21.4-notes.rst
.. currentmodule:: numpy
The NumPy 1.21.4 is a maintenance release that fixes a few bugs discovered after 1.21.3. The most important fix here is a fix for the NumPy header files to make them work for both x86_64 and M1 hardware when included in the Mac universal2 wheels. Previously, the header files only worked for M1 and this caused problems for folks building x86_64 extensions. This problem was not seen before Python 3.10 because there were thin wheels for x86_64 that had precedence. This release also provides thin x86_64 Mac wheels for Python 3.10.
The Python versions supported in this release are 3.7-3.10. If you want to compile your own version using gcc-11, you will need to use gcc-11.2+ to avoid problems.
A total of 7 people contributed to this release. People with a "+" by their names contributed a patch for the first time.
A total of 9 pull requests were merged for this release.
#20278 <https://github.com/numpy/numpy/pull/20278>__: BUG: Fix shadowed reference of dtype in type stub#20293 <https://github.com/numpy/numpy/pull/20293>__: BUG: Fix headers for universal2 builds#20294 <https://github.com/numpy/numpy/pull/20294>__: BUG: VOID_nonzero could sometimes mutate alignment flag#20295 <https://github.com/numpy/numpy/pull/20295>__: BUG: Do not use nonzero fastpath on unaligned arrays#20296 <https://github.com/numpy/numpy/pull/20296>__: BUG: Distutils patch to allow for 2 as a minor version (!)#20297 <https://github.com/numpy/numpy/pull/20297>__: BUG, SIMD: Fix 64-bit/8-bit integer division by a scalar#20298 <https://github.com/numpy/numpy/pull/20298>__: BUG, SIMD: Workaround broadcasting SIMD 64-bit integers on MSVC...#20300 <https://github.com/numpy/numpy/pull/20300>__: REL: Prepare for the NumPy 1.21.4 release.#20302 <https://github.com/numpy/numpy/pull/20302>__: TST: Fix a Arrayterator typing test failure