chore: use python.defaults to set rules_python default python version (#3301) python.defaults is the modern way to set the default. Setting it this way also helps avoid a bug where if a root module has a single `python.toolchain()` call (which are implicitly treated as `is_default=True`) and also sets the default using `python.defaults()`, some validation logic gives an error about using both ways to set a default.
This repository is the home of the core Python rules -- py_library, py_binary, py_test, py_proto_library, and related symbols that provide the basis for Python support in Bazel. It also contains package installation rules for integrating with PyPI and other indices.
Documentation for rules_python is at https://rules-python.readthedocs.io and in the Bazel Build Encyclopedia.
Examples live in the examples directory.
The core rules are stable. Their implementation is subject to Bazel's backward compatibility policy. This repository aims to follow semantic versioning.
The Bazel community maintains this repository. Neither Google nor the Bazel team provides support for the code. However, this repository is part of the test suite used to vet new Bazel releases. See How to contribute page for information on our development workflow.
For detailed documentation, see https://rules-python.readthedocs.io
See Bzlmod support for more details.