docs(howto): add optional feature loading guide - #4003
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Add documentation showing how to use features.loadable_symbols, features.targets, and features.version for multi-version compatibility in macros, BUILD files, and repository rules.
rickeylev
enabled auto-merge
August 5, 2026 04:09
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Macro and rule authors need clear guidance on writing Bazel code that
remains compatible across multiple rules_python releases as new APIs are
introduced. Previously, using features.loadable_symbols, targets, and
version lacked dedicated documentation, making it harder for developers
to know how to use these feature-detection APIs.
Add a how-to guide (docs/howto/optional-feature-loading.md) showing
how to inspect //python:features.bzl and generate compatibility repo
rules, BUILD files, and macro version checks.