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Build Information

Failed to build HostingView, reference main (4712a4), with Swift 6.4 for watchOS using Xcode 27.0 on 25 Sep 2026 21:09:53 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HostingView -destination generic/platform=watchOS

Build Log

GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 96183f03c8d5a4aeb4369f3e608d73ec
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/96183f03c8d5a4aeb4369f3e608d73ec.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/CompilationCache.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
ClangStatCache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/PrecompiledHeaders
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-watchos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-watchos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.modulemap (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftConstValuesFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.LinkFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftConstValuesFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-OutputFileMap.json (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.LinkFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.DependencyStaticMetadataFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-OutputFileMap.json (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.DependencyMetadataFileList (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.DependencyMetadataFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-watchos/HostingView.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.modulemap (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/HostingView.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-watchos
SwiftDriver HostingView normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name HostingView -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -target arm64-apple-watchos9.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 6 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-OutputFileMap.json -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -package-name spi_builder_workspace -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftDriver HostingView normal arm64_32 com.apple.xcode.tools.swift.compiler (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name HostingView -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -target arm64_32-apple-watchos9.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 6 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-OutputFileMap.json -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -package-name spi_builder_workspace -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_Builtin_stddef-2F9BFIPBQ5EWNSK5G7G7V4EKL.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_Builtin_float-372PLGDQ1U3B6Z5EA5DJMDORJ.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_Builtin_stdbool-84ZA1VDW90AGWZ2LF5KOCM8DZ.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/SwiftShims-D9VBB138U50XYYGW2C2V21N3L.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_AvailabilityInternal-22ZP1ILSQW16KHXZS5GBZHOCS.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_Builtin_stdarg-EYJP6DFYQL9GJLH1TJ84A8MHV.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_SwiftConcurrencyShims-58G4ISYSYDV3AT1DDGEE0QCUF.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/ptrcheck-EAZ3I917ZFA9H6ZCL6PGLG4TR.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/ptrauth-EW7YZZ7LEZE1QZF2T8148IPSA.pcm
SwiftExplicitDependencyGeneratePcm arm64_32 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/DeveloperToolsSupport-3FQKKPF3BW0SWE1YUZ86OZWIB.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_Builtin_stddef-5OH846KKUPSJJT7GCX9XU1TKG.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules/_SwiftConcurrencyShims-CTPSFSTDCBVSSQFHL6I305U72.pcm
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SwiftEmitModule normal arm64 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift:119:10: error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
117 |
118 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
119 | #Preview {
    |          `- error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
120 |   StatefulHostingView(state: Int.random(in: 0..<9)) { state in
121 |     VStack {
Failed frontend command:
SwiftCompile normal arm64 (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift -target arm64-apple-watchos9.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HostingView -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-watchos27.0 -target-sdk-version 27.0 -target-sdk-name watchos27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.abi.json
SwiftEmitModule normal arm64_32 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift:119:10: error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
117 |
118 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
119 | #Preview {
    |          `- error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
120 |   StatefulHostingView(state: Int.random(in: 0..<9)) { state in
121 |     VStack {
Failed frontend command:
SwiftCompile normal arm64_32 (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift -target arm64_32-apple-watchos9.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-dependencies-2.json -enable-objc-interop -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HostingView -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json -disable-clang-spi -clang-target arm64_32-apple-watchos27.0 -target-sdk-version 27.0 -target-sdk-name watchos27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.abi.json
SwiftCompile normal arm64 Compiling\ HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:61: error: 'UIView' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                             `- error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:68: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                                    `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile HostingView.swift
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:29: error: 'UILayoutPriority' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                             `- error: 'UILayoutPriority' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:72: error: 'required' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                        `- error: 'required' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.required:3:21: note: 'required' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var required: UILayoutPriority { get }}
  |                     `- note: 'required' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:84: error: 'fittingSizeLevel' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                                    `- error: 'fittingSizeLevel' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:42: error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                          `- error: 'UIView' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:49: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                                 `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:69:33: error: 'fittingSizeLevel' is unavailable in watchOS
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
    |                                 `- error: 'fittingSizeLevel' is unavailable in watchOS
 70 |     )
 71 |   }
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'UIHostingConfiguration' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'UIHostingConfiguration' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration:4:15: note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 2 | @available(macOS, unavailable)
 3 | @available(watchOS, unavailable)
 4 | public struct UIHostingConfiguration<Content, Background> : UIContentConfiguration, ~Sendable where Content : View, Background : View {
   |               `- note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 5 |     public func background<B>(@ContentBuilder content: () -> B) -> UIHostingConfiguration<Content, B> where B : View
 6 |     public func background<S>(_ style: S) -> UIHostingConfiguration<Content, _UIHostingConfigurationBackgroundView<S>> where S : ShapeStyle
SwiftCompile normal arm64_32 Compiling\ HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:61: error: 'UIView' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                             `- error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:68: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                                    `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:29: error: 'UILayoutPriority' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                             `- error: 'UILayoutPriority' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:72: error: 'required' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                        `- error: 'required' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.required:3:21: note: 'required' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var required: UILayoutPriority { get }}
  |                     `- note: 'required' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:84: error: 'fittingSizeLevel' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                                    `- error: 'fittingSizeLevel' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:42: error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                          `- error: 'UIView' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:49: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                                 `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:69:33: error: 'fittingSizeLevel' is unavailable in watchOS
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
    |                                 `- error: 'fittingSizeLevel' is unavailable in watchOS
 70 |     )
 71 |   }
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'UIHostingConfiguration' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'UIHostingConfiguration' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration:4:15: note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 2 | @available(macOS, unavailable)
 3 | @available(watchOS, unavailable)
 4 | public struct UIHostingConfiguration<Content, Background> : UIContentConfiguration, ~Sendable where Content : View, Background : View {
   |               `- note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 5 |     public func background<B>(@ContentBuilder content: () -> B) -> UIHostingConfiguration<Content, B> where B : View
 6 |     public func background<S>(_ style: S) -> UIHostingConfiguration<Content, _UIHostingConfigurationBackgroundView<S>> where S : ShapeStyle
SwiftCompile normal arm64_32 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile HostingView.swift
SwiftCompile normal arm64 Compiling\ StatefulHostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile StatefulHostingView.swift
SwiftCompile normal arm64_32 Compiling\ StatefulHostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
SwiftCompile normal arm64_32 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile StatefulHostingView.swift
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
2026-09-25 17:09:43.287 xcodebuild[627:3873] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 (in target 'HostingView' from project 'HostingView')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
	SwiftCompile normal arm64_32 (in target 'HostingView' from project 'HostingView')
	SwiftEmitModule normal arm64_32 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
	Building workspace HostingView with scheme HostingView
(5 failures)
Command line invocation:
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  HostingView: /Users/admin/builder/spi-builder-workspace
resolved source packages: HostingView
2026-09-25 17:09:49.639 xcodebuild[768:4407] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HostingView",
  "name" : "HostingView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "16.0"
    },
    {
      "name" : "maccatalyst",
      "version" : "16.0"
    },
    {
      "name" : "tvos",
      "version" : "16.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    }
  ],
  "products" : [
    {
      "name" : "HostingView",
      "targets" : [
        "HostingView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HostingView",
      "module_type" : "SwiftTarget",
      "name" : "HostingView",
      "path" : "Sources/HostingView",
      "product_memberships" : [
        "HostingView"
      ],
      "sources" : [
        "HostingView.swift",
        "StatefulHostingView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "6.0"
}
{
  "workspace" : {
    "name" : "HostingView",
    "schemes" : [
      "HostingView"
    ]
  }
}
2026-09-25 17:09:50.829 xcodebuild[776:4476] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HostingView -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath /Users/admin/builder/spi-builder-workspace/.derivedData build -scheme HostingView -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
  HostingView: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (2 targets)
    Target 'HostingView-product' in project 'HostingView'
        ➜ Explicit dependency on target 'HostingView' in project 'HostingView'
    Target 'HostingView' in project 'HostingView' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache
SwiftDriver HostingView normal arm64_32 com.apple.xcode.tools.swift.compiler (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name HostingView -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -target arm64_32-apple-watchos9.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 6 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-OutputFileMap.json -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -package-name spi_builder_workspace -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftDriver HostingView normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -parse-as-library -module-name HostingView -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -target arm64-apple-watchos9.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 6 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-OutputFileMap.json -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftmodule -serialize-diagnostics -dependency-scan-serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-dependency-scan.dia -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -package-name spi_builder_workspace -emit-const-values -const-gather-protocols-list /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64_32 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift:119:10: error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
117 |
118 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
119 | #Preview {
    |          `- error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
120 |   StatefulHostingView(state: Int.random(in: 0..<9)) { state in
121 |     VStack {
Failed frontend command:
SwiftCompile normal arm64_32 (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift -target arm64_32-apple-watchos9.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-dependencies-2.json -enable-objc-interop -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64_32 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HostingView -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView_const_extract_protocols.json -disable-clang-spi -clang-target arm64_32-apple-watchos27.0 -target-sdk-version 27.0 -target-sdk-name watchos27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64_32/HostingView.abi.json
SwiftCompile normal arm64_32 Compiling\ HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:61: error: 'UIView' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                             `- error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:68: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                                    `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
SwiftCompile normal arm64_32 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile HostingView.swift
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:29: error: 'UILayoutPriority' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                             `- error: 'UILayoutPriority' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:72: error: 'required' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                        `- error: 'required' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.required:3:21: note: 'required' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var required: UILayoutPriority { get }}
  |                     `- note: 'required' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:84: error: 'fittingSizeLevel' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                                    `- error: 'fittingSizeLevel' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:42: error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                          `- error: 'UIView' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:49: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                                 `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:69:33: error: 'fittingSizeLevel' is unavailable in watchOS
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
    |                                 `- error: 'fittingSizeLevel' is unavailable in watchOS
 70 |     )
 71 |   }
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'UIHostingConfiguration' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'UIHostingConfiguration' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration:4:15: note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 2 | @available(macOS, unavailable)
 3 | @available(watchOS, unavailable)
 4 | public struct UIHostingConfiguration<Content, Background> : UIContentConfiguration, ~Sendable where Content : View, Background : View {
   |               `- note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 5 |     public func background<B>(@ContentBuilder content: () -> B) -> UIHostingConfiguration<Content, B> where B : View
 6 |     public func background<S>(_ style: S) -> UIHostingConfiguration<Content, _UIHostingConfigurationBackgroundView<S>> where S : ShapeStyle
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'init(content:)' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'init(content:)' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration.init:2:8: note: 'init(content:)' has been explicitly marked unavailable here
1 | generic struct UIHostingConfiguration {
2 | public init(@ContentBuilder content: () -> Content)}
  |        `- note: 'init(content:)' has been explicitly marked unavailable here
3 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:125:39: error: 'fittingSizeLevel' is unavailable in watchOS
123 |     systemLayoutSizeFitting(
124 |       targetSize,
125 |       withHorizontalFittingPriority: .fittingSizeLevel,
    |                                       `- error: 'fittingSizeLevel' is unavailable in watchOS
126 |       verticalFittingPriority: .fittingSizeLevel
127 |     )
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
SwiftCompile normal arm64_32 Compiling\ StatefulHostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
SwiftCompile normal arm64_32 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile StatefulHostingView.swift
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
SwiftEmitModule normal arm64 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift:119:10: error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
117 |
118 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
119 | #Preview {
    |          `- error: return expression of type 'StatefulHostingView<Int>' does not conform to 'View'
120 |   StatefulHostingView(state: Int.random(in: 0..<9)) { state in
121 |     VStack {
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift -target arm64-apple-watchos9.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/Library/Frameworks -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos27.0-24R360-e829b21a6f8c9b70876ba0858053c04477534ef55a1706bf4c1112bbb242f0a2.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HostingView -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-watchos27.0 -target-sdk-version 27.0 -target-sdk-name watchos27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HostingView.build/Debug-watchos/HostingView-t.build/Objects-normal/arm64/HostingView.abi.json
SwiftCompile normal arm64 (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

SwiftCompile normal arm64 Compiling\ HostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:56:33: error: 'UIView' is unavailable in watchOS
 54 | /// ```
 55 | public class HostingView: UIView {
 56 |   private(set) var contentView: UIView!
    |                                 `- error: 'UIView' is unavailable in watchOS
 57 |
 58 |   /// The natural size of the hosted SwiftUI content.
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:132:62: error: 'UILayoutPriority' is unavailable in watchOS
130 |   public override func systemLayoutSizeFitting(
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
    |                                                              `- error: 'UILayoutPriority' is unavailable in watchOS
133 |     verticalFittingPriority: UILayoutPriority
134 |   ) -> CGSize {
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:133:30: error: 'UILayoutPriority' is unavailable in watchOS
131 |     _ targetSize: CGSize,
132 |     withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
133 |     verticalFittingPriority: UILayoutPriority
    |                              `- error: 'UILayoutPriority' is unavailable in watchOS
134 |   ) -> CGSize {
135 |     contentView.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:55:27: error: 'UIView' is unavailable in watchOS
 53 | /// ])
 54 | /// ```
 55 | public class HostingView: UIView {
    |                           `- error: 'UIView' is unavailable in watchOS
 56 |   private(set) var contentView: UIView!
 57 |
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:142:10: error: return expression of type 'HostingView' does not conform to 'View'
140 |
141 | @available(iOS 17.0, macCatalyst 17.0, tvOS 17.0, *)
142 | #Preview {
    |          `- error: return expression of type 'HostingView' does not conform to 'View'
143 |   HostingView {
144 |     Text("Hosting View")
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:61: error: 'UIView' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                             `- error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:64:68: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 62 |   /// in Auto Layout using the width that the layout system has assigned.
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
    |                                                                    `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile HostingView.swift
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:29: error: 'UILayoutPriority' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                             `- error: 'UILayoutPriority' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/NSLayoutConstraint.h:17:15: note: 'UILayoutPriority' has been explicitly marked unavailable here
 15 | @class NSArray, NSDictionary, NSLayoutAnchor;
 16 |
 17 | typedef float UILayoutPriority NS_TYPED_EXTENSIBLE_ENUM API_UNAVAILABLE(watchos);
    |               `- note: 'UILayoutPriority' has been explicitly marked unavailable here
 18 | static const UILayoutPriority UILayoutPriorityRequired API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 1000; // A required constraint.  Do not exceed this.
 19 | static const UILayoutPriority UILayoutPriorityDefaultHigh API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos) = 750; // This is the priority level with which a button resists compressing its content.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:72: error: 'required' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                        `- error: 'required' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.required:3:21: note: 'required' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var required: UILayoutPriority { get }}
  |                     `- note: 'required' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:65:84: error: 'fittingSizeLevel' is unavailable in watchOS
 63 |   public override var intrinsicContentSize: CGSize {
 64 |     let targetWidth = bounds.width > .zero ? bounds.width : UIView.layoutFittingCompressedSize.width
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
    |                                                                                    `- error: 'fittingSizeLevel' is unavailable in watchOS
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:42: error: 'UIView' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                          `- error: 'UIView' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:152:12: note: 'UIView' has been explicitly marked unavailable here
150 |
151 | UIKIT_EXTERN API_AVAILABLE(ios(2.0)) API_UNAVAILABLE(watchos) NS_SWIFT_UI_ACTOR
152 | @interface UIView : UIResponder <NSCoding, UIAppearance, UIAppearanceContainer, UIDynamicItem, UITraitEnvironment, UICoordinateSpace, UIFocusItem, UIFocusItemContainer, CALayerDelegate>
    |            `- note: 'UIView' has been explicitly marked unavailable here
153 |
154 | @property(class, nonatomic, readonly) Class layerClass;                        // default is [CALayer class]. Used when creating the underlying layer for the view.
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:67:49: error: 'layoutFittingCompressedSize' is unavailable in watchOS
 65 |     let horizontalPriority: UILayoutPriority = bounds.width > .zero ? .required : .fittingSizeLevel
 66 |     return contentView.systemLayoutSizeFitting(
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
    |                                                 `- error: 'layoutFittingCompressedSize' is unavailable in watchOS
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:560:27: note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
558 | // Size To Fit
559 |
560 | UIKIT_EXTERN const CGSize UILayoutFittingCompressedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
    |                           `- note: 'layoutFittingCompressedSize' has been explicitly marked unavailable here
561 | UIKIT_EXTERN const CGSize UILayoutFittingExpandedSize API_AVAILABLE(ios(6.0)) API_UNAVAILABLE(watchos);
562 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:69:33: error: 'fittingSizeLevel' is unavailable in watchOS
 67 |       CGSize(width: targetWidth, height: UIView.layoutFittingCompressedSize.height),
 68 |       withHorizontalFittingPriority: horizontalPriority,
 69 |       verticalFittingPriority: .fittingSizeLevel
    |                                 `- error: 'fittingSizeLevel' is unavailable in watchOS
 70 |     )
 71 |   }
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'UIHostingConfiguration' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'UIHostingConfiguration' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration:4:15: note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 2 | @available(macOS, unavailable)
 3 | @available(watchOS, unavailable)
 4 | public struct UIHostingConfiguration<Content, Background> : UIContentConfiguration, ~Sendable where Content : View, Background : View {
   |               `- note: 'UIHostingConfiguration' has been explicitly marked unavailable here
 5 |     public func background<B>(@ContentBuilder content: () -> B) -> UIHostingConfiguration<Content, B> where B : View
 6 |     public func background<S>(_ style: S) -> UIHostingConfiguration<Content, _UIHostingConfigurationBackgroundView<S>> where S : ShapeStyle
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:96:19: error: 'init(content:)' is unavailable in watchOS
 94 |       self?.invalidateIntrinsicContentSize()
 95 |     }
 96 |     contentView = UIHostingConfiguration {
    |                   `- error: 'init(content:)' is unavailable in watchOS
 97 |       content()
 98 |         .onGeometryChange(for: CGSize.self) {
SwiftUI.UIHostingConfiguration.init:2:8: note: 'init(content:)' has been explicitly marked unavailable here
1 | generic struct UIHostingConfiguration {
2 | public init(@ContentBuilder content: () -> Content)}
  |        `- note: 'init(content:)' has been explicitly marked unavailable here
3 |
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:125:39: error: 'fittingSizeLevel' is unavailable in watchOS
123 |     systemLayoutSizeFitting(
124 |       targetSize,
125 |       withHorizontalFittingPriority: .fittingSizeLevel,
    |                                       `- error: 'fittingSizeLevel' is unavailable in watchOS
126 |       verticalFittingPriority: .fittingSizeLevel
127 |     )
UIKit.UILayoutPriority.fittingSizeLevel:3:21: note: 'fittingSizeLevel' has been explicitly marked unavailable here
1 | struct UILayoutPriority {
2 | @available(watchOS, unavailable)
3 |   public static var fittingSizeLevel: UILayoutPriority { get }}
  |                     `- note: 'fittingSizeLevel' has been explicitly marked unavailable here
4 |
SwiftCompile normal arm64 Compiling\ StatefulHostingView.swift /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
/Users/admin/builder/spi-builder-workspace/Sources/HostingView/HostingView.swift:77:23: error: cannot override 'safeAreaInsets' which has been marked unavailable
 75 |   /// This view reports zero safe-area insets so the hosted SwiftUI hierarchy
 76 |   /// can extend to the edges of the UIKit view that contains it.
 77 |   public override var safeAreaInsets: UIEdgeInsets {
    |                       |- error: cannot override 'safeAreaInsets' which has been marked unavailable
    |                       `- note: remove 'override' modifier to declare a new 'safeAreaInsets'
 78 |     get { .zero }
 79 |     set {}
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIView.h:293:45: note: 'safeAreaInsets' has been explicitly marked unavailable here
291 | - (void)layoutMarginsDidChange API_AVAILABLE(ios(8.0));
292 |
293 | @property (nonatomic,readonly) UIEdgeInsets safeAreaInsets API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
    |                                             `- note: 'safeAreaInsets' has been explicitly marked unavailable here
294 | - (void)safeAreaInsetsDidChange API_AVAILABLE(ios(11.0), tvos(11.0)) API_UNAVAILABLE(watchos);
295 |
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HostingView/StatefulHostingView.swift (in target 'HostingView' from project 'HostingView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftPerFileCompile StatefulHostingView.swift
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
PruneExplicitPrecompiledModules /Users/admin/builder/spi-builder-workspace/.derivedData/SDKExplicitPrecompiledModules
2026-09-25 17:09:51.829 xcodebuild[777:4498] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64_32 (in target 'HostingView' from project 'HostingView')
	SwiftEmitModule normal arm64_32 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HostingView (in target 'HostingView' from project 'HostingView')
	SwiftCompile normal arm64 (in target 'HostingView' from project 'HostingView')
	Building workspace HostingView with scheme HostingView
(5 failures)
BUILD FAILURE 6.4 watchOS