Swift Package Index

Build Information

Failed to build SwiftUITabPager, reference main (edd16f), with Swift 6.3 for macOS (Xcode) using Xcode 26.4 on 14 Aug 2026 14:00:17 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SwiftUITabPager -destination platform=macOS,arch=arm64

Build Log

========================================
RunAll
========================================
Builder version: undefined version: run 'make version' to update
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/camosss/SwiftUITabPager.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/camosss/SwiftUITabPager
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at edd16f7 Release 4.1.2
Cloned https://github.com/camosss/SwiftUITabPager.git
Revision (git rev-parse @):
edd16f787dc3b3af6bfe8cca0d6944320284e0d6
SUCCESS checkout https://github.com/camosss/SwiftUITabPager.git at main
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.3
Building package at path:  $PWD
https://github.com/camosss/SwiftUITabPager.git
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
  SwiftUITabPager: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftUITabPager
2026-08-14 09:59:41.840 xcodebuild[541:3119] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftUITabPager",
  "name" : "SwiftUITabPager",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftUITabPager",
      "targets" : [
        "SwiftUITabPager"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftUITabPagerTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftUITabPagerTests",
      "path" : "Tests/SwiftUITabPagerTests",
      "sources" : [
        "PageTabViewControllerTests.swift",
        "SelectionResolutionTests.swift",
        "TabBarLayoutTests.swift",
        "TabPagerTests.swift"
      ],
      "target_dependencies" : [
        "SwiftUITabPager"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftUITabPager",
      "module_type" : "SwiftTarget",
      "name" : "SwiftUITabPager",
      "path" : "Sources/SwiftUITabPager",
      "product_memberships" : [
        "SwiftUITabPager"
      ],
      "sources" : [
        "Components/TabBar/Layout/FixedTabBar.swift",
        "Components/TabBar/Layout/FixedTabBarOverflowCheck.swift",
        "Components/TabBar/Layout/ScrollableTabBar.swift",
        "Components/TabBar/TabBar.swift",
        "Components/TabBar/TabBarContainer.swift",
        "Components/TabBar/TabButtons.swift",
        "Components/TabBar/TabIndicator.swift",
        "Components/TabBar/TabItemPreferenceKey.swift",
        "Content/PageTabViewController.swift",
        "Content/TabContentContainer.swift",
        "Extensions/Array+SafeSubscript.swift",
        "Extensions/View+OnChangeCompat.swift",
        "Helpers/TabBarLayout.swift",
        "Helpers/TabPagerHelper.swift",
        "Helpers/TabPagerSelection.swift",
        "Helpers/TabPagerWarning.swift",
        "Models/TabState.swift",
        "Styles/TabBarLayoutConfig.swift",
        "Styles/TabBarSeparatorStyle.swift",
        "Styles/TabIndicatorStyle.swift",
        "Styles/TabLayoutStyle.swift",
        "TabPager.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SwiftUITabPager"
    ]
  }
}
2026-08-14 10:00:05.526 xcodebuild[714:4476] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SwiftUITabPager -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-26.4.0.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 SwiftUITabPager -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  SwiftUITabPager: /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 'SwiftUITabPager' in project 'SwiftUITabPager'
        ➜ Explicit dependency on target 'SwiftUITabPager' in project 'SwiftUITabPager'
    Target 'SwiftUITabPager' in project 'SwiftUITabPager' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: dd2dbad2b2b196d59d83c6bf9bff1293
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/dd2dbad2b2b196d59d83c6bf9bff1293.xcbuilddata
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.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/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/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
    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
    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/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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.modulemap (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.DependencyMetadataFileList (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.DependencyStaticMetadataFileList (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftConstValuesFileList (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-OutputFileMap.json (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.LinkFileList (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftFileList (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager_const_extract_protocols.json (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager_const_extract_protocols.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/SwiftUITabPager.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.modulemap (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/SwiftUITabPager.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver SwiftUITabPager normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SwiftUITabPager -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -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 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager_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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: error: Unable to resolve module dependency: 'UIKit'
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: note: A dependency of main module 'SwiftUITabPager'
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/TabContentContainer.swift:1:8: note: Also imported here
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
2026-08-14 10:00:07.142 xcodebuild[722:4560] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: error: unable to resolve module dependency: 'UIKit'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: note: a dependency of main module 'SwiftUITabPager'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/TabContentContainer.swift:1:8: note: also imported here
import UIKit
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver SwiftUITabPager normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
	Building workspace spi-builder-workspace with scheme SwiftUITabPager
(2 failures)
Command line invocation:
    /Applications/Xcode-26.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
  SwiftUITabPager: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftUITabPager
2026-08-14 10:00:14.319 xcodebuild[739:4763] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftUITabPager",
  "name" : "SwiftUITabPager",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    }
  ],
  "products" : [
    {
      "name" : "SwiftUITabPager",
      "targets" : [
        "SwiftUITabPager"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftUITabPagerTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftUITabPagerTests",
      "path" : "Tests/SwiftUITabPagerTests",
      "sources" : [
        "PageTabViewControllerTests.swift",
        "SelectionResolutionTests.swift",
        "TabBarLayoutTests.swift",
        "TabPagerTests.swift"
      ],
      "target_dependencies" : [
        "SwiftUITabPager"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftUITabPager",
      "module_type" : "SwiftTarget",
      "name" : "SwiftUITabPager",
      "path" : "Sources/SwiftUITabPager",
      "product_memberships" : [
        "SwiftUITabPager"
      ],
      "sources" : [
        "Components/TabBar/Layout/FixedTabBar.swift",
        "Components/TabBar/Layout/FixedTabBarOverflowCheck.swift",
        "Components/TabBar/Layout/ScrollableTabBar.swift",
        "Components/TabBar/TabBar.swift",
        "Components/TabBar/TabBarContainer.swift",
        "Components/TabBar/TabButtons.swift",
        "Components/TabBar/TabIndicator.swift",
        "Components/TabBar/TabItemPreferenceKey.swift",
        "Content/PageTabViewController.swift",
        "Content/TabContentContainer.swift",
        "Extensions/Array+SafeSubscript.swift",
        "Extensions/View+OnChangeCompat.swift",
        "Helpers/TabBarLayout.swift",
        "Helpers/TabPagerHelper.swift",
        "Helpers/TabPagerSelection.swift",
        "Helpers/TabPagerWarning.swift",
        "Models/TabState.swift",
        "Styles/TabBarLayoutConfig.swift",
        "Styles/TabBarSeparatorStyle.swift",
        "Styles/TabIndicatorStyle.swift",
        "Styles/TabLayoutStyle.swift",
        "TabPager.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SwiftUITabPager"
    ]
  }
}
2026-08-14 10:00:15.444 xcodebuild[749:4836] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SwiftUITabPager -destination platform=macOS,arch=arm64
Command line invocation:
    /Applications/Xcode-26.4.0.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 SwiftUITabPager -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  SwiftUITabPager: /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 'SwiftUITabPager' in project 'SwiftUITabPager'
        ➜ Explicit dependency on target 'SwiftUITabPager' in project 'SwiftUITabPager'
    Target 'SwiftUITabPager' in project 'SwiftUITabPager' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.sdkstatcache
SwiftDriver SwiftUITabPager normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SwiftUITabPager -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.4.sdk -target arm64-apple-macos10.13 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -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 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/macosx26.4-25E236-688ef53f1462e2c8f657fdc38a81448fdfce61f96a3a6fc38dcbb3b93e3bb2ee.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager.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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager_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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftUITabPager.build/Debug/SwiftUITabPager.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/SwiftUITabPager.build/Debug/SwiftUITabPager.build/Objects-normal/arm64/SwiftUITabPager-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: error: Unable to resolve module dependency: 'UIKit'
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: note: A dependency of main module 'SwiftUITabPager'
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/TabContentContainer.swift:1:8: note: Also imported here
import UIKit
       ^ (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
2026-08-14 10:00:16.304 xcodebuild[752:4868] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:00a5c8e3096e8bf37cfa325baa7142f392717c32, name:My Mac }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: error: unable to resolve module dependency: 'UIKit'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/PageTabViewController.swift:1:8: note: a dependency of main module 'SwiftUITabPager'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftUITabPager/Content/TabContentContainer.swift:1:8: note: also imported here
import UIKit
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver SwiftUITabPager normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftUITabPager' from project 'SwiftUITabPager')
	Building workspace spi-builder-workspace with scheme SwiftUITabPager
(2 failures)
BUILD FAILURE 6.3 macosXcodebuild