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@aignas aignas commented Nov 20, 2025

Summary:

  • example: stop using 3.9 in multi-python-versions
  • chore: cleanup unused code

There is more to go, but this is a good start remaining of #2704

@aignas aignas requested a review from rickeylev as a code owner November 20, 2025 08:14
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Summary of Changes

Hello @aignas, 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 focuses on modernizing the Python environment within the project's examples. It systematically removes outdated Python 3.9 configurations and introduces support for newer Python versions, specifically 3.12, 3.13, and 3.14. The changes update default versions and expand the range of supported Python environments, ensuring the examples remain relevant and functional with current Python releases.

Highlights

  • Python 3.9 Deprecation: Removed all explicit references and configurations for Python 3.9 across various Bazel files, including MODULE.bazel, WORKSPACE, BUILD.bazel, and requirements_lock files, to streamline and update the example configurations.
  • Python Version Updates: Updated the default Python version in the multi_python_versions example from 3.9 to 3.10, ensuring the examples align with more current Python releases.
  • New Python Version Support: Added comprehensive configurations and support for Python versions 3.12, 3.13, and 3.14 in the multi_python_versions example. This includes defining new toolchains, pip parsing rules, and test targets for these versions.
  • Cleanup of Unused Code: Eliminated redundant variable definitions and use_repo calls related to Python 3.9 in examples/bzlmod/other_module/MODULE.bazel, contributing to a cleaner and more maintainable codebase.
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Code Review

This pull request begins the process of removing Python 3.9 from the examples, focusing on the multi_python_versions example. The changes involve updating Bazel configuration files (MODULE.bazel, WORKSPACE, BUILD.bazel) to replace Python 3.9 with newer versions like 3.12, 3.13, and 3.14. The test configurations and requirement lock files are also updated accordingly. The changes are mostly correct and align with the goal of the PR. However, I found a critical issue in examples/multi_python_versions/MODULE.bazel where incorrect requirement lock files are used for the newly added Python versions, which would break bzlmod builds.

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
@aignas aignas enabled auto-merge November 22, 2025 06:10
@aignas aignas added this pull request to the merge queue Nov 22, 2025
Merged via the queue into bazel-contrib:main with commit 728cce7 Nov 22, 2025
4 checks passed
@aignas aignas deleted the python3.9 branch November 22, 2025 06:27
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2 participants