chore: update librarian container to use ruff

[ohmayr]

Update the container cli tool to use ruff instead of black and isort.

[gemini-code-assist]

Summary of Changes

Hello @ohmayr, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the container CLI tool to leverage Ruff as a unified solution for code formatting and import organization. This change streamlines the code quality process for proto-only libraries by consolidating the functionality previously provided by Black and Isort into a single, faster tool.

Highlights

• Migration to Ruff: The _run_post_processor function in .generator/cli.py has been updated to use ruff for both import sorting and code formatting, replacing the separate calls to isort and black.
• Dependency Updates: The requirements.in file has been modified to remove black and isort dependencies and introduce ruff==0.14.14.

Changelog

• .generator/cli.py
  • Replaced subprocess.run(['isort', output]) with ruff check --select I --fix for import sorting.
  • Replaced subprocess.run(['black', output]) with ruff format for code formatting.
  • Added target_version and line_length arguments to the new ruff commands.
• .generator/requirements.in
  • Removed black==23.7.0.
  • Removed isort==5.11.0.
  • Added ruff==0.14.14.

Activity

• No human activity (comments, reviews, etc.) has been recorded on this pull request yet.

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[gemini-code-assist]

Code Review

This pull request updates the container CLI tool to use ruff for formatting and import sorting, replacing black and isort. The changes in requirements.in and cli.py correctly reflect this migration. I've kept the suggestion in cli.py to improve the robustness and maintainability of the new ruff calls by adding error checking and refactoring duplicated arguments.

[parthea]

Wait until the mypy check passes in #15539