# Numba Meeting: 2025-06-24

Attendees: Todd, Graham, Val, Siu, Guilherme, Stuart, Kaustubh
FPOC (last week): Todd
FPOC (incoming): Val

NOTE: All communication is subject to the [Numba Code of Conduct](https://github.com/numba/numba-governance/blob/accepted/code-of-conduct.md).

Please refer to [this calendar](https://calendar.google.com/calendar/embed?src=5rqnddm4gjrdfjm31fsv182epk%40group.calendar.google.com) for the next meeting date.

## ~~Office hour signup~~

## Notes
- Get rid of make in the build systems, switching everything to CMAKE.
- Default to static LLVM linking.

## Discussion

- When is LLVM 20 going to land in llvmlite ?
- https://github.com/numba/llvmlite/pull/1226 - GHA llvmdev 20 build
- Hopefully next release.
- General opinion on the idea of _[RFC] Support for `__array__()`_ https://github.com/numba/numba/pull/9584
- Going to do a test where we have a type that we implement explicitly but also has `__array__` and then want to make sure that the explicit type support is the one that is used.
- Should add this as a test cast
- How would this effect awkward array?
- Adding protocol-based fingerprinting ahead of typeof implementations will break any existing code that expects to be able to type things that support the array function protocol using a typeof implementation.
- Therefore, it's probably better to leave this implementation largely as-is as a last resort
- This prefers correctness over performance, which is the right choice for now
- Things we will not consider now, but may consider later:
- Further performance improvement
- User-definined protocol-based typing extension
- Next steps:
- Fix up the suggestions on the PR regarding checking return values
- Add comments or something documenting how the protocol-based array function typing works.
- Add the test case as mentioned above

- Discuss admission of `INSERT NAME HERE` to numba-maintainers and this triage meeting.

## New "Ready for Review" PRs

## 1. New Issues
- [numba#10123](https://github.com/numba/numba/issues/10123) - Numba exhibits strange behavior when doing bitwise operations

### Closed Issues

## 2. New PRs
- [numba#10122](https://github.com/numba/numba/pull/10122) - add ufunc.reduceat support
- [numba#10124](https://github.com/numba/numba/pull/10124) - Implementing support for atomics in CPU numba
- Todd will leave them some comments.
- [numba#10125](https://github.com/numba/numba/pull/10125) - #9977 rebased
- [llvmlite#1234](https://github.com/numba/llvmlite/pull/1234) - Default to static linking, override with LLVMLITE_SHARED
- [llvmlite#1235](https://github.com/numba/llvmlite/pull/1235) - Update pre-commit hook PyCQA/flake8 to v7.3.0
- [llvmlite#1236](https://github.com/numba/llvmlite/pull/1236) - Update pre-commit hook python-jsonschema/check-jsonschema to v0.33.1

### Closed PRs
- [numba#10120](https://github.com/numba/numba/pull/10120) - Bug: Reproducer for platform dependent compilation issue with OS X
- [numba#10121](https://github.com/numba/numba/pull/10121) - test/numba win wmic

(last numba: 10125; llvmlite 1236)