Do not fail the build on only finding incompatible-architecture modules on canImport
queries
#84475
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This PR contains two changes:
canImport
.This change refactors the module loaders to explicitly take a parameter indicating whether or not the loader is handling a
canImport
query, in order to avoid emitting an error when finding a dependency Swift binary module with only incompatible architecture variants present.Refactor
maybeDiagnoseTargetMismatch
to separately collect mismatching target variant modules inidentifyArchitectureVariants
and rename it tohandlePossibleTargetMismatch
.Prior uses of
maybeDiagnoseTargetMismatch
will continue diagnosing errors/warnings on only discovering incompatible swift binary module target variants. A new overload ofhandlePossibleTargetMismatch
, inSwiftModuleScanner
, instead collects it as a discovered incompatible candidate, for diagnosis downstream.Resolves rdar://161175498