Export SPI in the prebuilt swiftinterface - #24
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The archive ships each module as a .swiftinterface, and a public interface strips every @_spi declaration. Consumers that import SPI therefore cannot build against it at all: SwiftLint 0.63.1's RedundantSelfRule does `@_spi(RawSyntax) import SwiftSyntax` and fails with "cannot find 'SyntaxText' in scope", even though 603.0.1 declares it. Emit .private.swiftinterface as well and point swift_import at it. It is a superset of the public interface, and rules_swift documents it as the value to pass for `swiftinterface` when SPI is required. Guard both phases so a missing private interface fails the build rather than silently publishing an archive that only breaks later, in consumer builds. Co-authored-by: Claude Code <noreply@anthropic.com> Ai-assisted: true
luispadron
approved these changes
Aug 19, 2026
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The archive ships each module as a .swiftinterface, and a public interface
strips every @_spi declaration. Consumers that import SPI therefore cannot
build against it at all: SwiftLint 0.63.1's RedundantSelfRule does
@_spi(RawSyntax) import SwiftSyntaxand fails with "cannot find'SyntaxText' in scope", even though 603.0.1 declares it.
Emit .private.swiftinterface as well and point swift_import at it. It is a
superset of the public interface, and rules_swift documents it as the value
to pass for
swiftinterfacewhen SPI is required. Guard both phases so amissing private interface fails the build rather than silently publishing an
archive that only breaks later, in consumer builds.
Co-authored-by: Claude Code noreply@anthropic.com
Ai-assisted: true