build(deps): upgrade libc and fix iOS compatibility by youknowdot · Pull Request #9359 · RustPython/RustPython

youknowdot · 2026-10-25T07:54:29Z

Summary

Continue #9240's libc 0.2.189 → 0.2.191 upgrade, preserving the original Dependabot commit and attribution.

Temporarily pin nix to upstream commit f9ba3ed0698255d93240b07ecbf39ecb05a8a5cd, which includes the Apple socket availability fix in fix: compatibility with libc 0.2.190 nix-rust/nix#2821; update cfg_aliases to 0.2.2.
Export SYSPROTO_CONTROL only on macOS and omit os.system on Apple mobile targets where libc does not provide it.
Copy Lib/_ios_support.py unchanged from final CPython 3.15.0, including the libobjc.dylib fallback and ImportError handling when the Objective-C runtime cannot be loaded.

No fake platform APIs or new test skips are introduced.

Validation

At head 3d6287b:

Correctness CI: all 25 jobs passed, including the aarch64-apple-ios cargo check.
LibDependencies: passed.
The canonical iOS helper's Git blob matches CPython 3.15.0 exactly.

The hosted iOS result is a cross-compilation check, not an iOS device or simulator runtime test.

AI assistance: OpenAI Codex, disclosed in the commit trailers.

Summary by CodeRabbit

Bug Fixes
- Improved compatibility across Apple platforms by limiting system-command functionality to supported targets.
- Restricted the SYSPROTO_CONTROL socket attribute to macOS; other supported Apple socket attributes remain available on Apple platforms.
- Updated platform-specific dependency compatibility for iOS.

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.189 to 0.2.191. - [Release notes](https://github.com/rust-lang/libc/releases) - [Changelog](https://github.com/rust-lang/libc/blob/0.2.191/CHANGELOG.md) - [Commits](rust-lang/libc@0.2.189...0.2.191) --- updated-dependencies: - dependency-name: libc dependency-version: 0.2.191 dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <[email protected]>

Pin nix to the exact upstream macOS-only API fix until it is released. Update the cfg_aliases minimum required by that revision. Assisted-by: OpenAI Codex:model version unavailable

Preserve the Dependabot upgrade and iOS fix while incorporating upstream actionlint and mach2 dependency updates. Assisted-by: OpenAI Codex:model version unavailable

coderabbitai · 2026-10-25T07:54:37Z

No actionable comments were generated in the recent review.

Recent review info

Run configuration

Source mode: Auto
Repository: RustPython/RustPython
Branch: main
File: .coderabbit.yml
Commit: ef6e2db
Layers: Repository YAML
Review profile: CHILL
Plan: Advanced
Run ID: 68055aaf-b759-42d2-8ac9-2f22ebb074e0

Commits

Reviewing files that changed from the base of the PR and between ef6e2db and 3d6287b.

Files ignored due to path filters: 2

Cargo.lock is excluded by !**/*.lock
Lib/_ios_support.py is excluded by !Lib/**

Files selected for processing: 5

Cargo.toml
crates/host_env/src/os.rs
crates/host_env/src/socket.rs
crates/stdlib/src/socket.rs
crates/vm/src/stdlib/os.rs

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.

Walkthrough

The changes override the crates.io nix dependency and adjust the availability of system and selected socket constants on Apple platforms.

Changes: Apple Platform Compatibility

Layer / File(s)	Summary
System API availability `Cargo.toml`, `crates/host_env/src/os.rs`, `crates/vm/src/stdlib/os.rs`	The `nix` dependency now uses a specified Git revision. The `system` APIs are excluded on iOS, tvOS, watchOS, and visionOS. The `ToCString` import is local to the function.
Socket constant availability `crates/host_env/src/socket.rs`, `crates/stdlib/src/socket.rs`	`SYSPROTO_CONTROL` is now restricted to macOS. The other listed Apple socket constants retain their Apple-target availability.

Priority: Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: youknowone, shaharnaveh

Merge Risk: Minimal · up to 3d628

No concrete current-head compatibility or dependency-resolution risk was established.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 4 files. (1 skipped: 1 …	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly summarizes the main changes: upgrading libc-related dependencies and fixing iOS compatibility.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 4 files. (1 skipped: 1 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

Finishing Touches

🧪 Generate unit tests (beta)

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Expose SYSPROTO_CONTROL only on macOS and omit os.system on Apple mobile targets where libc does not provide it. Keep host and Python exports consistent with the platform declarations and CPython availability. Assisted-by: OpenAI Codex:model version unavailable

Migrate Lib/_ios_support.py through scripts/update_lib to CPython 3.15 commit d220409a13b77de7a6c30abe16ea90db01528edc. Fall back to the bare libobjc.dylib name when find_library cannot resolve the shared-cache entry, and normalize loader OSError to ImportError. Linux default and frozen-stdlib cargo check gates are compile-only. They do not validate iOS dynamic loading, Objective-C symbols, or native runtime. Assisted-by: OpenAI Codex:model version unavailable

github-actions · 2026-10-25T15:48:57Z

📦 Library Dependencies

The following Lib/ modules were modified. Here are their dependencies:

[x] lib: cpython/Lib/_ios_support.py

dependencies:

_ios_support

dependent tests: (30 tests)
- [ ] platform: test__locale test__osx_support test_asyncio test_baseexception test_builtin test_calendar test_cmath test_ctypes test_fcntl test_math test_mimetypes test_os test_platform test_regrtest test_shutil test_socket test_ssl test_strptime test_sysconfig test_time test_tkinter test_winreg test_wsgiref
- [x] idlelib: test_idle
- [ ] profiling.sampling.gecko_collector: test_profiling
- [ ] profiling.sampling.heatmap_collector: test_profiling
- [ ] pydoc: test_enum test_pydoc
- [x] uuid: test_os
- [x] webbrowser: test_webbrowser

Legend:

[+] path exists in CPython
[x] up-to-date, [ ] outdated

chatgpt-codex-connector · 2026-10-26T01:06:30Z

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	🔄 Running since 2026-10-26T01:06:28.746270Z	`3d6287b`	Draft marked ready

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youknowone · 2026-10-26T01:06:39Z


 [patch.crates-io]
+# Keep libc 0.2.191 compatible with iOS until nix releases https://github.com/nix-rust/nix/pull/2821.
+nix = { git = "https://github.com/nix-rust/nix", rev = "f9ba3ed0698255d93240b07ecbf39ecb05a8a5cd" }


not a good idea. wait new release

dependabot Bot and others added 3 commits October 25, 2026 06:27

build(deps): fix libc 0.2.191 compatibility on iOS

e81961b

Pin nix to the exact upstream macOS-only API fix until it is released. Update the cfg_aliases minimum required by that revision. Assisted-by: OpenAI Codex:model version unavailable

Merge latest main into libc compatibility update

35687f0

Preserve the Dependabot upgrade and iOS fix while incorporating upstream actionlint and mach2 dependency updates. Assisted-by: OpenAI Codex:model version unavailable

youknowdot added 2 commits October 25, 2026 20:06

youknowdot changed the title ~~build(deps): upgrade libc with iOS-compatible nix~~ build(deps): upgrade libc and fix iOS compatibility Oct 26, 2026

youknowone marked this pull request as ready for review October 26, 2026 01:06

youknowone requested changes Oct 26, 2026

View reviewed changes

youknowone marked this pull request as draft October 26, 2026 01:06

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build(deps): upgrade libc and fix iOS compatibility - #9359

build(deps): upgrade libc and fix iOS compatibility#9359
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📦 Library Dependencies

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