Implement legacy_symbols

In the repositories that don't have autoloads we also expose native.legacy_symbols.
Those can be used to fallback to the native symbol, whenever it's still available in Bazel.

Fallback using a top-level symbol doesn't work, because BzlCompileFunction would throw an error when it's mentioned.

legacy_symbols aren't available when autoloads are not enabled.

The feature is intended to be used with bazel_features repository, which can correctly report native symbols on all versions of Bazel.

PiperOrigin-RevId: 673741927
Change-Id: I2334030d70cbb944b92784e32a184841ea238d51
2 files changed
tree: eea23844ac9dcc3978dede0cb5458ce071aef4f8
  1. .bazelci/
  2. .github/
  3. examples/
  4. scripts/
  5. site/
  6. src/
  7. third_party/
  8. tools/
  9. .bazelrc
  10. .bazelversion
  11. .gitattributes
  12. .gitignore
  13. AUTHORS
  14. bazel_downloader.cfg
  15. BUILD
  16. CHANGELOG.md
  17. CODE_OF_CONDUCT.md
  18. CODEOWNERS
  19. combine_distfiles.py
  20. combine_distfiles_to_tar.sh
  21. compile.sh
  22. CONTRIBUTING.md
  23. CONTRIBUTORS
  24. distdir.bzl
  25. extensions.bzl
  26. LICENSE
  27. maven_install.json
  28. MODULE.bazel
  29. MODULE.bazel.lock
  30. rbe_extension.bzl
  31. README.md
  32. repositories.bzl
  33. requirements.txt
  34. SECURITY.md
  35. WORKSPACE.bzlmod
  36. workspace_deps.bzl
README.md

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