[7.2.0] Replace most Bzlmod events with a Skyframe graph lookup #22202
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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 bazelbuild#20369 Closes bazelbuild#22058. PiperOrigin-RevId: 628213907 Change-Id: I8ba19f5151a8183be5051c8d9280f93476db2272
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Retaining
Postables across the graph increases the memory usage of every dependent Skyframe node.ModuleExtensionResolutionEventis replaced with a lookup of the "done" Skyframe nodes for extension evaluation inBazelLockFileModule#afterCommand.RootModuleFileFixupEventis replaced with direct storage inSingleExtensionEvalValue. The validation of repos imported from an extension is moved into a separateSkyFunction. This simplifiesbazel 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
BazelModuleResolutionEventis kept for now, but will become obsolete with the new lockfile format.Work towards #20369
Closes #22058.
PiperOrigin-RevId: 628213907
Change-Id: I8ba19f5151a8183be5051c8d9280f93476db2272
Commit 49850f8