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[Xcode 27] Embedding Flutter app with SwiftPM fails to build swift helper tools #190846

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#190848
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[Xcode 27] Embedding Flutter app with SwiftPM fails to build swift helper tools#190846
#190848
Labels
a: existing-appsIntegration with existing apps via the add-to-app flowplatform-iosiOS applications specificallyplatform-macosBuilding on or for macOS specificallyt: xcode"xcodebuild" on iOS and general Xcode project managementteam-iosOwned by iOS platform team

Description

@vashworth
vashworth
opened on Aug 10, 2026
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Gatekeeper check failed: Cannot find file at path /var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/iOSNativeProject/../my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/release/flutter-prebuild-tool
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
warning: 'flutternativetools': Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMATWarning: unknown environment variable SWIFT_DEBUG_INFORMATION_VERSION
Warning: unknown environment variable SWIFT_DEBUG_INFORMATION_FORMAT
Building for production...
[Planning deferred tasks]
error: The operation couldn’t be completed. (SwiftDriver.JobExecutionError error 0.)
warning: Unable to locate libSwiftScan. Fallback to `swift-frontend` dependency scanner invocation.
error: SwiftDriver FlutterToolHelper normal arm64 com.apple.xcode.tools.swift.compiler failed with a nonzero exit code. Command line:     cd /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration
    builtin-SwiftDriver -- /usr/bin/swiftc -parse-as-library -module-name FlutterToolHelper -O -whole-module-optimization @/private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper.SwiftFileList -DSWIFT_PACKAGE -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -external-plugin-path //usr/lib/swift/host/plugins/testing\#//usr/bin/swift-plugin-server -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-beta-4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -target arm64-apple-macos12.0 -g -module-cache-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/ModuleCache.noindex -Xfrontend -serialize-debugging-options -disable-sandbox -swift-version 5 -I /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Products/Release -I /Applications/Xcode-beta-4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Products/Release -F /Applications/Xcode-beta-4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -num-threads 24 -output-file-map /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper-OutputFileMap.json -save-temps -color-diagnostics -explicit-module-build -module-cache-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/ModuleCache.noindex -sdk-module-cache-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -emit-const-values -const-gather-protocols-list /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper_const_extract_protocols.json -Xcc -I/private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Products/Release/include -Xcc -I/private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/DerivedSources-normal/arm64 -Xcc -I/private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/DerivedSources/arm64 -Xcc -I/private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -emit-objc-header -emit-objc-header-path /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration/FlutterNativeTools/.build/prebuild/out/Intermediates.noindex/FlutterNativeTools.build/Release/FlutterToolHelper-t.build/Objects-normal/arm64/FlutterToolHelper-Swift.h -working-directory /private/var/folders/xw/ky8z400d5ys67zy99pr42lyw011smf/T/swift_package_manager_add2app_test_ios_module.rDiSE6/my_flutter_app/build/ios/SwiftPackages/FlutterNativeIntegration -no-emit-module-separately-wmo
error: Build failed

(2 failures)
package:matcher                                                       expect
test/integration.shard/swift_package_manager_add2app_test.dart 500:3  _buildNativeProject
swift_package_manager_add2app_test.dart:500
===== asynchronous gap ===========================
test/integration.shard/swift_package_manager_add2app_test.dart 391:9  main.<fn>
swift_package_manager_add2app_test.dart:391
ComputePackagePrebuildTargetDependencyGraph


stderr: ** BUILD FAILED **

To recreate, run this test locally: https://github.com/flutter/flutter/blob/221059e0b624498a2acb46d97b7a46b8901b6436/packages/flutter_tools/test/integration.shard/swift_package_manager_add2app_test.dart

Activity

  1. vashworth
    added
    a: existing-appsIntegration with existing apps via the add-to-app flow
    t: xcode"xcodebuild" on iOS and general Xcode project management
    team-iosOwned by iOS platform team
    on Aug 10, 2026
  2. vashworth
    added this to Apple release: Xcode, iOS, macOSon Aug 10, 2026
  3. github-project-automation
    moved this to Not started in Apple release: Xcode, iOS, macOSon Aug 10, 2026
  4. vashworth
    added
    platform-iosiOS applications specifically
    platform-macosBuilding on or for macOS specifically
    on Aug 10, 2026
  5. auto-submit
    closed this as completedin #190848on Aug 12, 2026
  6. github-project-automation
    moved this from Not started to Done in Apple release: Xcode, iOS, macOSon Aug 12, 2026
  7. mdebbar
    added a commit that references this issue on Aug 12, 2026

    Remove Xcode environment when building swift tools in Xcode pre-action (

    3820cdf
  8. auto-submit
    added 2 commits that reference this issue on Aug 24, 2026

    [CP-stable]Remove Xcode environment when building swift tools in Xcod…

    d989cca

    [CP-beta]Remove Xcode environment when building swift tools in Xcode …

    da8023b

  9. github-actions commented on Aug 26, 2026

    @github-actions
    github-actionsbot
    on Aug 26, 2026 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  10. github-actions
    locked as resolved and limited conversation to collaborators on Aug 26, 2026
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