feat: Add Python 3.13t and 3.14t builds / wheels

[DisturbedOcean]

No description provided.

[kylebarron]

It would be great to update to pyo3 0.28, but that should be a separate PR from adding free-threaded wheels

[kylebarron]

I think updating to pyo3 0.28 should be simpler; let's do that first and follow up with the free-threaded support

[kylebarron]

Thanks for the PR. I think we want a few other elements from kylebarron/arro3#275

• Add tests with pytest-freethreaded https://github.com/kylebarron/arro3/pull/275/changes#diff-50c86b7ed8ac2cf95bd48334961bf0530cdc77b5a56f852c5c61b89d735fd711R22
• Set gil_used = false on the pymodule https://github.com/kylebarron/arro3/pull/275/changes#diff-1965863709521d4cc671d8d108863c67bd5f32296c3352f682aeb9c9d0493ea6R33
• Add 3.13t and 3.14t to the pytest matrix https://github.com/kylebarron/arro3/pull/275/changes#diff-70450661fa435b39492aab8bf651281084183f36f0a59598f05fec2b4523204bR41
• And then if you could run the wheels workflow on this branch in your repo (you can go to the actions tab, to the wheels workflow, and then start a job from there on a specific branch), I'd like to see that this branch doesn't break wheel building. (I can't run actions from a branch from a fork)
• Ideally, but not a requirement for this PR, we'd refactor the wheel builds so that we use abi3 wheels for Python 3.11+ (which means we only need a single wheel per arch for any mainline Python 3.11+ instead of per-version wheels). Then we'd make wheels for Python 3.11 abi, 3.10, 3.13t, 3.14t, and pypy3.11.

[kylebarron]

I think we explicitly don't want to set --threads=1, because then we're not testing whether the free-threading build actually works.

Why did you set --threads=1? Did you hit an error with it unset?

[DisturbedOcean]

Given c58dd01 - what should I change this PR to have?

[kylebarron]

The gist of this PR still stands. You're still adding 3.13t and 3.14t to the version-specific wheel matrix. So e.g. you'd add it on this line:

obstore/.github/workflows/wheels.yml

Line 69 in 344f56f

args: --release --out dist -i 3.10 -i pypy3.11 --manifest-path obstore/Cargo.toml

I don't think the diff should be too complex

I needed #623 as the cleanest way to fix #622

[kylebarron]

@DisturbedOcean it looks like you're pretty close here; are you planning to work on this PR more?

[DisturbedOcean]

I'm pretty buried with work and life right now, not sure when I can find time to finish this up quite yet.

If someone else does, by all means.

[kylebarron]

I think we need to:

• Switch to pytest-run-parallel (pytest-freethreaded was deprecated)
• Update pyproject.toml to limit dev dependencies. Right now we have a big blob of dev-dependencies for convenience, but some of these don't have wheels provided for 3.14t, and CI takes forever trying to build them from scratch.

[Copilot]

Pull request overview

This PR adds support for building/testing against free-threaded CPython (“t” builds) by extending CI workflows, adjusting project dependencies, and updating tests/fixtures to be more robust under different runtime behaviors.

Changes:

• Add 3.13t/3.14t to wheel build targets and adjust Python test workflow to handle free-threaded runs.
• Add pytest-freethreaded (guarded for Python ≥3.13) and configure pytest to avoid unintended threaded execution on GIL-enabled builds.
• Make S3/minio-backed tests more order/cleanup resilient and reduce reliance on pytest’s tmp_path fixture in some tests.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
uv.lock	Updates lock resolution markers and adds pytest-freethreaded/pyzmq plus version bumps to support new Python targets.
pyproject.toml	Updates dev dependencies and registers a freethreaded pytest marker.
tests/conftest.py	Adds pytest configuration to control pytest-freethreaded behavior and ensures the MinIO bucket is cleaned before tests.
tests/test_fsspec.py	Makes list assertions order-independent and uses TemporaryDirectory for local-file upload tests.
tests/store/test_local.py	Switches several tests to use TemporaryDirectory instead of tmp_path.
obstore/src/lib.rs	Marks the PyO3 module as gil_used = false for free-threaded compatibility.
.github/workflows/wheels.yml	Extends wheel builds to include 3.13t/3.14t.
.github/workflows/test-python.yml	Splits test execution for “t” builds to run with --require-gil-disabled.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[kylebarron]

I'm testing a wheel build in https://github.com/developmentseed/obstore/actions/runs/22688677302

[kylebarron]

Ok well wheel building succeeded; it's just a remaining issue with the pytest-freethreaded -> pytest-run-parallel conversion

[kylebarron]

This looks great; thank you for your help!

[DisturbedOcean]

No problem! Any chance for a new release soon?

[kylebarron]

I pushed a new release in #640