python/extensions/python.bzl

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# Licensed under the Apache License, Version 2.0 (the "License");
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"""Python toolchain module extensions for use with bzlmod.

::::{topic} Basic usage

The simplest way to configure the toolchain with `rules_python` is as follows.

```starlark
python = use_extension("@rules_python//python/extensions:python.bzl", "python")
python.defaults(python_version = "3.14")
python.toolchain(python_version = "3.14")
use_repo(python, "python_3_14")
```

:::{seealso}
For more in-depth documentation see the {obj}`python.toolchain`.
:::
::::

::::{topic} Overrides

Overrides can be done at 3 different levels:
* Overrides affecting all python toolchain versions on all platforms - {obj}`python.override`.
* Overrides affecting a single toolchain versions on all platforms - {obj}`python.single_version_override`.
* Overrides affecting a single toolchain versions on a single platforms - {obj}`python.single_version_platform_override`.

:::{seealso}
The main documentation page on registering [toolchains](/toolchains).
:::
::::
"""

load("//python/private:python.bzl", _python = "python")

python = _python