HeadlessTabView – Build Information

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Build Information

Failed to build HeadlessTabView, reference master (c8f6e4), with Swift 6.2 (beta) for macOS (Xcode) using Xcode 26.0 on 19 Jun 2025 16:46:25 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HeadlessTabView -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.64.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/davidask/HeadlessTabView.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/davidask/HeadlessTabView
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at c8f6e43 Add guard for swapping view controllers, rename generic type
Cloned https://github.com/davidask/HeadlessTabView.git
Revision (git rev-parse @):
c8f6e4399ce65d231231a22d2733a8009c5950be
SUCCESS checkout https://github.com/davidask/HeadlessTabView.git at master
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.2
Building package at path:  $PWD
https://github.com/davidask/HeadlessTabView.git
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  HeadlessTabView: /Users/admin/builder/spi-builder-workspace
resolved source packages: HeadlessTabView
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HeadlessTabView",
  "name" : "HeadlessTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "HeadlessTabView",
      "targets" : [
        "HeadlessTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HeadlessTabView",
      "module_type" : "SwiftTarget",
      "name" : "HeadlessTabView",
      "path" : "Sources/HeadlessTabView",
      "product_memberships" : [
        "HeadlessTabView"
      ],
      "sources" : [
        "HeadlessTabView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "HeadlessTabView"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HeadlessTabView -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.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 HeadlessTabView -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  HeadlessTabView: /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 'HeadlessTabView' in project 'HeadlessTabView'
        ➜ Explicit dependency on target 'HeadlessTabView' in project 'HeadlessTabView'
    Target 'HeadlessTabView' in project 'HeadlessTabView' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: b57932637c090ee947ed50e1d83df6d8
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/b57932637c090ee947ed50e1d83df6d8.xcbuilddata
ClangStatCache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache
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
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug
    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
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.DependencyMetadataFileList (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.DependencyStaticMetadataFileList (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.modulemap (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-OutputFileMap.json (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftConstValuesFileList (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftFileList (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.LinkFileList (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.LinkFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/HeadlessTabView.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.modulemap (in target 'HeadlessTabView' from project 'HeadlessTabView')
    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/HeadlessTabView.build/Debug/HeadlessTabView.build/HeadlessTabView.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver HeadlessTabView normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name HeadlessTabView -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -target arm64-apple-macos10.13 -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 -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-OutputFileMap.json -use-frontend-parseable-output -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/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.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/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
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SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/IOSurface-9LQDWZH5Y0ZB4RWUFFKDZ23OR.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Symbols-9XJZ4P20L95D2PKL7SUMCPNCP.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/CoreData-2VDD5DGXSFXFYAFCURRRLCNZH.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/CoreTransferable-4WBNZTZACNE6TBAY73Y6K50U5.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/ApplicationServices-80KYHHX1R2VRVAU4W8EZDEEOR.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/UniformTypeIdentifiers-DQ8B56HX9H30U1VC4FR7MUR73.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/OSLog-EL7ZOBC6NM9PETBVVJ6E17R4R.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Metal-8K6OGVANM2PHZ1ZLR2FDCDNJ5.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/CoreVideo-31SCFGOSZHI37ZN5T6VDOBDWG.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/QuartzCore-91DS2RXYOJ8S506PBOGG46MQO.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/CoreImage-5DNTT2TYSH7S2BIIFP4WY094L.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/SwiftUICore-743YT5N6M7AW630GU6OBDXXS.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/AppKit-F2SGBH32805IRS4IQPGIRRYWD.pcm
SwiftExplicitDependencyGeneratePcm arm64 /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/SwiftUI-DC9S0GEI0MZI50CQRK6M7H77H.pcm
SwiftEmitModule normal arm64 Emitting\ module\ for\ HeadlessTabView (in target 'HeadlessTabView' from project 'HeadlessTabView')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:6:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selection: Tab
     ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:30: error: 'Binding' is only available in macOS 10.15 or newer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
                             ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:12: note: add @available attribute to enclosing initializer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
           ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:45: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
                                            ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:12: note: add @available attribute to enclosing initializer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
           ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:4:46: error: 'View' is only available in macOS 10.15 or newer
where Tab: Hashable & CaseIterable, Content: View {
                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:25:10: error: 'Binding' is only available in macOS 10.15 or newer
        @Binding var selection: Tab
         ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:29:20: error: 'GeometryProxy' is only available in macOS 10.15 or newer
        var proxy: GeometryProxy
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:32:26: error: 'Binding' is only available in macOS 10.15 or newer
            _ selection: Binding<Tab>,
                         ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:31:16: note: add @available attribute to enclosing initializer
        public init(
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:33:20: error: 'GeometryProxy' is only available in macOS 10.15 or newer
            proxy: GeometryProxy,
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:31:16: note: add @available attribute to enclosing initializer
        public init(
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:43:34: error: cannot find type 'UIViewControllerRepresentable' in scope
extension HeadlessTabView.Inner: UIViewControllerRepresentable {
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:45:40: error: cannot find type 'Context' in scope
    func makeUIViewController(context: Context) -> HeadlessTabView.Controller {
                                       ^~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:49:90: error: cannot find type 'Context' in scope
    func updateUIViewController(_ uiViewController: HeadlessTabView.Controller, context: Context) {
                                                                                         ^~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:87:41: error: cannot find type 'UIViewController' in scope
    fileprivate final class Controller: UIViewController {
                                        ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:89:31: error: cannot find type 'UIEdgeInsets' in scope
        var passedEdgeInsets: UIEdgeInsets?
                              ^~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:91:23: error: method does not override any method from its superclass
        override func loadView() {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:96:23: error: method does not override any method from its superclass
        override func viewWillLayoutSubviews() {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:114:28: error: cannot find type 'UIViewController' in scope
        var selectedChild: UIViewController? {
                           ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:23: error: cannot find 'isViewLoaded' in scope
                guard isViewLoaded && view.superview != nil else {
                      ^~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:39: error: cannot find 'view' in scope
                guard isViewLoaded && view.superview != nil else {
                                      ^~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:139:31: error: cannot find 'children' in scope
                    children: children.filter({ child in
                              ^~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:217:43: error: cannot find type 'UIViewController' in scope
        private func didRemove(children: [UIViewController]) {
                                          ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:207:36: error: cannot find type 'UIViewController' in scope
        private func didAdd(child: UIViewController) {
                                   ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:152:23: error: method does not override any method from its superclass
        override func viewWillAppear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:162:23: error: method does not override any method from its superclass
        override func viewDidAppear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:172:23: error: method does not override any method from its superclass
        override func viewWillDisappear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:178:23: error: method does not override any method from its superclass
        override func viewDidDisappear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:184:49: error: cannot find type 'UIViewController' in scope
        override func willMove(toParent parent: UIViewController?) {
                                                ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:190:37: error: cannot find type 'UIViewController' in scope
        private func willAdd(child: UIViewController) {
                                    ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:211:44: error: cannot find type 'UIViewController' in scope
        private func willRemove(children: [UIViewController]) {
                                           ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:228:42: error: cannot find type 'UIViewController' in scope
        var storedViewControllers: [Tab: UIViewController] = [:]
                                         ^~~~~~~~~~~~~~~~
Failed frontend command:
/Applications/Xcode-26.0.0-Beta.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/HeadlessTabView/HeadlessTabView.swift -target arm64-apple-macos10.13 -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.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/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -swift-version 5 -enforce-exclusivity\=checked -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json -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 -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HeadlessTabView -frontend-parseable-output -disable-clang-spi -target-sdk-version 26.0 -target-sdk-name macosx26.0 -clang-target arm64-apple-macos26.0 -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.abi.json
SwiftCompile normal arm64 Compiling\ HeadlessTabView.swift /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HeadlessTabView (in target 'HeadlessTabView' from project 'HeadlessTabView')
	Building workspace spi-builder-workspace with scheme HeadlessTabView
(3 failures)
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  HeadlessTabView: /Users/admin/builder/spi-builder-workspace
resolved source packages: HeadlessTabView
{
  "dependencies" : [
  ],
  "manifest_display_name" : "HeadlessTabView",
  "name" : "HeadlessTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "HeadlessTabView",
      "targets" : [
        "HeadlessTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "HeadlessTabView",
      "module_type" : "SwiftTarget",
      "name" : "HeadlessTabView",
      "path" : "Sources/HeadlessTabView",
      "product_memberships" : [
        "HeadlessTabView"
      ],
      "sources" : [
        "HeadlessTabView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.6"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "HeadlessTabView"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0-Beta.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme HeadlessTabView -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-26.0.0-Beta.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 HeadlessTabView -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  HeadlessTabView: /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 'HeadlessTabView' in project 'HeadlessTabView'
        ➜ Explicit dependency on target 'HeadlessTabView' in project 'HeadlessTabView'
    Target 'HeadlessTabView' in project 'HeadlessTabView' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache
SwiftDriver HeadlessTabView normal arm64 com.apple.xcode.tools.swift.compiler (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name HeadlessTabView -Onone -enforce-exclusivity\=checked @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -target arm64-apple-macos10.13 -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 -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -parse-as-library -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-OutputFileMap.json -use-frontend-parseable-output -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/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.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/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
SwiftEmitModule normal arm64 Emitting\ module\ for\ HeadlessTabView (in target 'HeadlessTabView' from project 'HeadlessTabView')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:6:6: error: 'Binding' is only available in macOS 10.15 or newer
    @Binding var selection: Tab
     ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:30: error: 'Binding' is only available in macOS 10.15 or newer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
                             ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:12: note: add @available attribute to enclosing initializer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
           ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:45: error: 'ViewBuilder' is only available in macOS 10.15 or newer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
                                            ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:10:12: note: add @available attribute to enclosing initializer
    public init(_ selection: Binding<Tab>, @ViewBuilder content: @escaping (Tab) -> Content)
           ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:16:27: error: 'View' is only available in macOS 10.15 or newer
    public var body: some View {
                          ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:16:16: note: add @available attribute to enclosing property
    public var body: some View {
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:4:46: error: 'View' is only available in macOS 10.15 or newer
where Tab: Hashable & CaseIterable, Content: View {
                                             ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:3:15: note: add @available attribute to enclosing generic struct
public struct HeadlessTabView<Tab, Content>: View
              ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:25:10: error: 'Binding' is only available in macOS 10.15 or newer
        @Binding var selection: Tab
         ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:29:20: error: 'GeometryProxy' is only available in macOS 10.15 or newer
        var proxy: GeometryProxy
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:32:26: error: 'Binding' is only available in macOS 10.15 or newer
            _ selection: Binding<Tab>,
                         ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:31:16: note: add @available attribute to enclosing initializer
        public init(
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:33:20: error: 'GeometryProxy' is only available in macOS 10.15 or newer
            proxy: GeometryProxy,
                   ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:31:16: note: add @available attribute to enclosing initializer
        public init(
               ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:24:24: note: add @available attribute to enclosing struct
    fileprivate struct Inner {
                       ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:43:34: error: cannot find type 'UIViewControllerRepresentable' in scope
extension HeadlessTabView.Inner: UIViewControllerRepresentable {
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:45:40: error: cannot find type 'Context' in scope
    func makeUIViewController(context: Context) -> HeadlessTabView.Controller {
                                       ^~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:49:90: error: cannot find type 'Context' in scope
    func updateUIViewController(_ uiViewController: HeadlessTabView.Controller, context: Context) {
                                                                                         ^~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:87:41: error: cannot find type 'UIViewController' in scope
    fileprivate final class Controller: UIViewController {
                                        ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:89:31: error: cannot find type 'UIEdgeInsets' in scope
        var passedEdgeInsets: UIEdgeInsets?
                              ^~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:91:23: error: method does not override any method from its superclass
        override func loadView() {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:96:23: error: method does not override any method from its superclass
        override func viewWillLayoutSubviews() {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:114:28: error: cannot find type 'UIViewController' in scope
        var selectedChild: UIViewController? {
                           ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:23: error: cannot find 'isViewLoaded' in scope
                guard isViewLoaded && view.superview != nil else {
                      ^~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:39: error: cannot find 'view' in scope
                guard isViewLoaded && view.superview != nil else {
                                      ^~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:139:31: error: cannot find 'children' in scope
                    children: children.filter({ child in
                              ^~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:217:43: error: cannot find type 'UIViewController' in scope
        private func didRemove(children: [UIViewController]) {
                                          ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:207:36: error: cannot find type 'UIViewController' in scope
        private func didAdd(child: UIViewController) {
                                   ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:152:23: error: method does not override any method from its superclass
        override func viewWillAppear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:162:23: error: method does not override any method from its superclass
        override func viewDidAppear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:172:23: error: method does not override any method from its superclass
        override func viewWillDisappear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:178:23: error: method does not override any method from its superclass
        override func viewDidDisappear(_ animated: Bool) {
        ~~~~~~~~      ^
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:184:49: error: cannot find type 'UIViewController' in scope
        override func willMove(toParent parent: UIViewController?) {
                                                ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:190:37: error: cannot find type 'UIViewController' in scope
        private func willAdd(child: UIViewController) {
                                    ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:211:44: error: cannot find type 'UIViewController' in scope
        private func willRemove(children: [UIViewController]) {
                                           ^~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:228:42: error: cannot find type 'UIViewController' in scope
        var storedViewControllers: [Tab: UIViewController] = [:]
                                         ^~~~~~~~~~~~~~~~
Failed frontend command:
/Applications/Xcode-26.0.0-Beta.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/HeadlessTabView/HeadlessTabView.swift -target arm64-apple-macos10.13 -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -load-resolved-plugin /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.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/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -sdk /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -I /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.0.0-Beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -no-color-diagnostics -Xcc -fno-color-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -swift-version 5 -enforce-exclusivity\=checked -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView_const_extract_protocols.json -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 -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.0-25A5279m-f7c1d129d9d5414f2afbbad1fd6fd62e.sdkstatcache -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/swift-overrides.hmap -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HeadlessTabView -frontend-parseable-output -disable-clang-spi -target-sdk-version 26.0 -target-sdk-name macosx26.0 -clang-target arm64-apple-macos26.0 -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-master-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView-master-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView.build/Objects-normal/arm64/HeadlessTabView.abi.json
SwiftCompile normal arm64 Compiling\ HeadlessTabView.swift /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode

--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:d51ac47367ade5b2d9f89c244b7c66e1587d9237, name:My Mac }
** BUILD FAILED **
The following build commands failed:
	SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift (in target 'HeadlessTabView' from project 'HeadlessTabView')
	SwiftEmitModule normal arm64 Emitting\ module\ for\ HeadlessTabView (in target 'HeadlessTabView' from project 'HeadlessTabView')
	Building workspace spi-builder-workspace with scheme HeadlessTabView
(3 failures)
BUILD FAILURE 6.2 macosXcodebuild