tree 335ade092ad5650f47378efba78be2eaa0f19ffe
parent a2773de53c02ccaf242ed52f706a08a7f61b9186
author Ivo List <ilist@google.com> 1728410499 +0200
committer GitHub <noreply@github.com> 1728410499 +0000
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chore: support removal of builtin providers (#2274)

The builtin providers PyInfo, PyRuntimeInfo, and PyCcLinkParamsProvider
are being removed,
which means Bazel throws an error while compiling bzl files if there is
a reference to a
top-level symbol that doesn't exist anymore. For backwards
compatibility, rules_python
consumes/produces these providers, so the symbols are used in various
places.

To fix, use `native.legacy_globals` and Bazel version detection to
conditionally emit
the symbols into `@rules_python_internal`. If they aren't present, they
are reported
as None.

This mimics equivalent functionality in bazel_features; bazel_features
isn't used because
it would require users to update their WORKSPACE to initialize some
dependencies before
rules_python can perform its initialization.

Removal of the builtin symbols is controlled by
`--incompatible_autoload_externally`
(which is in Bazel 8 and has been cherry-picked into earlier version).
If the flag is
enabled with "@rules_python" or "-@rules_python" the providers are
removed from Bazel.

---------

Co-authored-by: Richard Levasseur <rlevasseur@google.com>