Update pyo3 requirement from =0.21.0 to =0.22.2

[dependabot]

Updates the requirements on pyo3 to permit the latest version.

Release notes

Sourced from pyo3's releases.

PyO3 0.22.2

This release contains some minor reliability fixes building upon PyO3 0.22.1.

As PyO3 is still working on supporting freethreaded Python (upcoming in 3.13), support has been gated behind an UNSAFE_PYO3_BUILD_FREE_THREADED=1 environment variable to avoid unsuspecting users running into broken builds.

Packages built for the abi3 stable ABI will now use FFI functions for refcounting instead of inline reference count modifications on all versions of the stable ABI (previously only abi3 builds for 3.12 and up would use FFI functions). This helps mitigate interactions of old versions of the stable ABI with future CPython releases which do more complex reference counting (e.g. immortal objects, freethreaded reference counting).

The #[pymodule] declarative module now supports directly receiving options. (E.g. #[pymodule(name = "foo")], which would previously have been written as two attributes #[pymodule] #[pyo3(name = "foo")].)

A compile error on Rust 1.78 related to use of c"" literals has been fixed.

Thank you to the following contributors for the improvements:

@​davidhewitt @​FlickerSoul @​gi0baro @​Icxolu @​MatthijsKok @​styvane

Changelog

Sourced from pyo3's changelog.

[0.22.2] - 2024-07-17

Packaging

• Require opt-in to freethreaded Python using the UNSAFE_PYO3_BUILD_FREE_THREADED=1 environment variable (it is not yet supported by PyO3). #4327

Changed

• Use FFI function calls for reference counting on all abi3 versions. #4324
• #[pymodule(...)] now directly accepts all relevant #[pyo3(...)] options. #4330

Fixed

• Fix compile failure in declarative #[pymodule] under presence of #![no_implicit_prelude]. #4328
• Fix compile failure due to c-string literals on Rust < 1.79. #4353

[0.22.1] - 2024-07-06

Added

• Add #[pyo3(submodule)] option for declarative #[pymodule]s. #4301
• Implement PartialEq<bool> for Bound<'py, PyBool>. #4305

Fixed

• Return NotImplemented instead of raising TypeError from generated equality method when comparing different types. #4287
• Handle full-path #[pyo3::prelude::pymodule] and similar for #[pyclass] and #[pyfunction] in declarative modules.#4288
• Fix 128-bit int regression on big-endian platforms with Python <3.13. #4291
• Stop generating code that will never be covered with declarative modules. #4297
• Fix invalid deprecation warning for trailing optional on #[setter] function. #4304

[0.22.0] - 2024-06-24

Packaging

• Update heck dependency to 0.5. #3966
• Extend range of supported versions of chrono-tz optional dependency to include version 0.10. #4061
• Update MSRV to 1.63. #4129
• Add optional num-rational feature to add conversions with Python's fractions.Fraction. #4148
• Support Python 3.13. #4184

Added

• Add PyWeakref, PyWeakrefReference and PyWeakrefProxy. #3835
• Support #[pyclass] on enums that have tuple variants. #4072
• Add support for scientific notation in Decimal conversion. #4079
• Add pyo3_disable_reference_pool conditional compilation flag to avoid the overhead of the global reference pool at the cost of known limitations as explained in the performance section of the guide. #4095
• Add #[pyo3(constructor = (...))] to customize the generated constructors for complex enum variants. #4158
• Add PyType::module, which always matches Python __module__. #4196
• Add PyType::fully_qualified_name which matches the "fully qualified name" defined in PEP 737. #4196

... (truncated)

Commits

• 92b0f15 release: 0.22.2
• da9f52e only emit c-string literals on Rust 1.79 and later (#4352) (#4353)
• 3d7e5a3 chore: update ruff configuration to resolve deprecation warning (#4346)
• e2ebb72 use FFI calls for refcounting on all abi3 versions (#4324)
• 7e0fc30 allow #[pymodule(...)] to accept all relevant #[pyo3(...)] options (#4330)
• 6317570 remove BuildFlag member to avoid breaking change in patch
• 7fed7c3 Prevent building in GIL-less environment (#4327)
• d99fc06 docs: fixups to 0.22 migration guide (#4332)
• 613a70b docs: use versioned links from docs to guide (#4331)
• b50f1c3 ci: check minimal-versions on MSRV feature powerset (#4273)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #518.