Replace most Bzlmod events with a Skyframe graph lookup

Retaining `Postable`s across the graph increases the memory usage of every dependent Skyframe node.

`ModuleExtensionResolutionEvent` is replaced with a lookup of the "done" Skyframe nodes for extension evaluation in `BazelLockFileModule#afterCommand`.

`RootModuleFileFixupEvent` is replaced with direct storage in `SingleExtensionEvalValue`. The validation of repos imported from an extension is moved into a separate `SkyFunction`. This simplifies `bazel mod tidy`, which no longer needs to swallow certain exceptions, and allows cache hits when only the (invalid) imports of an extension are modified even without the lockfile.

The `BazelModuleResolutionEvent` is kept for now, but will become obsolete with the new lockfile format.

Work towards #20369

Closes #22058.

PiperOrigin-RevId: 628213907
Change-Id: I8ba19f5151a8183be5051c8d9280f93476db2272
26 files changed
tree: 61652e3f6130b98b8cb6a9ec23ea9003cca45d50
  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
  36. WORKSPACE.bzlmod
  37. workspace_deps.bzl
README.md

Bazel

{Fast, Correct} - Choose two

Build and test software of any size, quickly and reliably.

  • Speed up your builds and tests: Bazel rebuilds only what is necessary. With advanced local and distributed caching, optimized dependency analysis and parallel execution, you get fast and incremental builds.

  • One tool, multiple languages: Build and test Java, C++, Android, iOS, Go, and a wide variety of other language platforms. Bazel runs on Windows, macOS, and Linux.

  • Scalable: Bazel helps you scale your organization, codebase, and continuous integration solution. It handles codebases of any size, in multiple repositories or a huge monorepo.

  • Extensible to your needs: Easily add support for new languages and platforms with Bazel's familiar extension language. Share and re-use language rules written by the growing Bazel community.

Getting Started

Documentation

Reporting a Vulnerability

To report a security issue, please email security@bazel.build with a description of the issue, the steps you took to create the issue, affected versions, and, if known, mitigations for the issue. Our vulnerability management team will respond within 3 working days of your email. If the issue is confirmed as a vulnerability, we will open a Security Advisory. This project follows a 90 day disclosure timeline.

Contributing to Bazel

See CONTRIBUTING.md

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