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2 changes: 1 addition & 1 deletion Sources/PackageDescription/BuildSettings.swift
Original file line number Diff line number Diff line change
Expand Up @@ -422,7 +422,7 @@ public struct SwiftSetting: Sendable {
_ condition: BuildSettingCondition? = nil
) -> SwiftSetting {
return SwiftSetting(
name: "swiftLanguageVersion", value: [.init(describing: version)], condition: condition)
name: "swiftLanguageMode", value: [.init(describing: version)], condition: condition)
}

/// Defines a `-language-mode` to pass to the
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34 changes: 34 additions & 0 deletions Tests/PackageLoadingTests/PD_6_0_LoadingTests.swift
Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,40 @@ final class PackageDescription6_0LoadingTests: PackageDescriptionLoadingTests {
}
}

func testSwiftLanguageModesPerTarget() async throws {
try UserToolchain.default.skipUnlessAtLeastSwift6()

let content = """
import PackageDescription
let package = Package(
name: "Foo",
defaultLocalization: "fr",
products: [],
targets: [
.target(
name: "Foo",
swiftSettings: [
.swiftLanguageMode(.v5)
]
),
.target(
name: "Bar",
swiftSettings: [
.swiftLanguageVersion(.v6)
]
)
]
)
"""

let observability = ObservabilitySystem.makeForTesting()
let (_, validationDiagnostics) = try await loadAndValidateManifest(content, observabilityScope: observability.topScope)
XCTAssertNoDiagnostics(validationDiagnostics)
testDiagnostics(observability.diagnostics) { result in
result.checkUnordered(diagnostic: .contains("'swiftLanguageVersion' is deprecated: renamed to 'swiftLanguageMode(_:_:)'"), severity: .warning)
}
}

private func loadRootManifestWithBasicGitRepository(
manifestContent: String,
validator: (Manifest, TestingObservability) throws -> ()
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2 changes: 1 addition & 1 deletion Tests/WorkspaceTests/ManifestSourceGenerationTests.swift
Original file line number Diff line number Diff line change
Expand Up @@ -589,7 +589,7 @@ final class ManifestSourceGenerationTests: XCTestCase {
try await testManifestWritingRoundTrip(manifestContents: contents, toolsVersion: .v5_9)
}

func testManifestGenerationWithSwiftLanguageVersion() async throws {
func testManifestGenerationWithSwiftLanguageMode() async throws {
try UserToolchain.default.skipUnlessAtLeastSwift6()
let manifest = Manifest.createRootManifest(
displayName: "pkg",
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