feat: support clang version to include 22 and adjust default version to 20

[shenxianpeng]

closes #397

Summary by CodeRabbit

• Chores
  • Updated supported clang versions to 11–22 (removed 9 and 10; added 22).
  • Changed default clang version from 18 to 20.
  • Updated action input options to reflect the new version list.
  • Bumped tooling versions for clang tools and C++ linter.

[github-actions]

Cpp-Linter Report ⚠️

Some files did not pass the configured checks!

clang-format (v16.0.6) reports: 2 file(s) not formatted

• docs/examples/demo/demo.hpp
• docs/examples/demo/demo.cpp

clang-tidy (v16.0.6) reports: 7 concern(s)

• docs/examples/demo/demo.hpp:6:11: warning: [modernize-use-default-member-init]

  use default member initializer for 'useless'

      char* useless;
            ^
                   {"\0"}

• docs/examples/demo/demo.hpp:7:9: warning: [modernize-use-default-member-init]

  use default member initializer for 'numb'

      int numb;
          ^
              {0}

• docs/examples/demo/demo.hpp:11:11: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

      void *not_useful(char *str){useless = str;}
      ~~~~~~^
      auto                        -> void *

• docs/examples/demo/demo.cpp:3:10: warning: [modernize-deprecated-headers]

  inclusion of deprecated C++ header 'stdio.h'; consider using 'cstdio' instead

  #include <stdio.h>
           ^~~~~~~~~
           <cstdio>

• docs/examples/demo/demo.cpp:8:5: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

  int main(){
  ~~~ ^
  auto       -> int

• docs/examples/demo/demo.cpp:10:13: warning: [readability-braces-around-statements]

  statement should be inside braces

      for (;;) break;
              ^
               {

• docs/examples/demo/demo.cpp:13:5: warning: [cppcoreguidelines-pro-type-vararg]

  do not call c-style vararg functions

      printf("Hello world!\n");
      ^

Have any feedback or feature suggestions? Share it here.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 7d07ea18-8bea-494a-89e3-e5f9ed72fb50

📥 Commits

Reviewing files that changed from the base of the PR and between d79f814 and bb8ad71.

⛔ Files ignored due to path filters (1)

• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (3)

• .github/workflows/self-test.yml
• action.yml
• pyproject.toml

🚧 Files skipped from review as they are similar to previous changes (2)

• action.yml
• pyproject.toml

---

Walkthrough

Updated CI and action configuration to add clang/clang-format 22, remove clang versions 9 and 10, change the action default version from 18 to 20, and bumped two action-related dependency package versions in pyproject.toml.

Changes

Cohort / File(s)	Summary
CI workflow .github/workflows/self-test.yml	Removed clang versions 9, 10 from the matrix and added 22 to the clang-version list.
GitHub Action metadata action.yml	Updated version input description to include 22 (removed 10, 9) and changed default from 18 to 20.
Action dependencies pyproject.toml	Bumped clang-tools 0.16.0→0.17.0 and cpp-linter 1.11.4→1.12.0.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• Add clang v20 and change default version to v16 #299: Modifies the same CI workflow and action input defaults to update supported clang versions.

Suggested reviewers

• 2bndy5

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main changes: adding clang version 22 support and adjusting the default version to 20.
Linked Issues check	✅ Passed	The PR successfully addresses issue #397 by adding clang version 22 to supported versions in self-test.yml and action.yml, and updates dependencies accordingly.
Out of Scope Changes check	✅ Passed	All changes directly support the objectives: version 22 support and default version adjustment. The dependency bumps for clang-tools and cpp-linter are necessary for proper v22 support.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/support-v22

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[2bndy5]

Windows runner failed (as I suspected) because v22 is not available on runner by default and we don't have a static binary built for v22.

MacOS runner succeeded because there is a homebrew formula for v22.

Linux runner failed. This is a little confusing. It looks like the LLVM PPA does not have any v22 builds uploaded (yet). Also, like Windows runner, we don't have any v22 static binary builds to use as a fall back.

We should really test out #368 because there are v22 builds available on PyPI.

[shenxianpeng]

Windows runner failed (as I suspected) because v22 is not available on runner by default and we don't have a static binary built for v22.

After bump clang-tools version to v0.17.0, this failure will be removed. this version will support v22 binaries on Window, Linux and macOS (arm and Intel)

[shenxianpeng]

once #401 is merged and we rebase for this PR, I assume CI should be pass.

[shenxianpeng]

We should really test out #368 because there are v22 builds available on PyPI.

clang-tidy v22 wheel not published now, we could consider switch after ssciwr/clang-tidy-wheel#114 is done.