Swift Package Index

Build Information

Failed to build RotatingLabel, reference 1.1.0 (3f8aa9), with Swift 6.3 for macOS (Xcode) using Xcode 26.4 on 13 Apr 2026 22:55:03 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/raymondjavaxx/RotatingLabel.git
Reference: 1.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/raymondjavaxx/RotatingLabel
 * tag               1.1.0      -> FETCH_HEAD
HEAD is now at 3f8aa95 Version bump (#14)
Cloned https://github.com/raymondjavaxx/RotatingLabel.git
Revision (git rev-parse @):
3f8aa95d431a186b02743ef65e43003567f91d58
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/raymondjavaxx/RotatingLabel.git at 1.1.0
========================================
Build
========================================
Selected platform:         macosXcodebuild
Swift version:             6.3
Building package at path:  $PWD
https://github.com/raymondjavaxx/RotatingLabel.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
Fetching from https://github.com/pointfreeco/swift-snapshot-testing
Fetching from https://github.com/pointfreeco/swift-custom-dump
Fetching from https://github.com/swiftlang/swift-syntax
Fetching from https://github.com/pointfreeco/xctest-dynamic-overlay
Creating working copy of package ‘xctest-dynamic-overlay’
Checking out 1.9.0 of package ‘xctest-dynamic-overlay’
Creating working copy of package ‘swift-syntax’
Checking out 603.0.0 of package ‘swift-syntax’
Creating working copy of package ‘swift-custom-dump’
Checking out 1.5.0 of package ‘swift-custom-dump’
Creating working copy of package ‘swift-snapshot-testing’
Checking out 1.19.2 of package ‘swift-snapshot-testing’
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/603.0.0/swiftlang-6.3.0.123.5-macosx26.4-MacroSupport.zip
Resolved source packages:
  xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.9.0
  swift-snapshot-testing: https://github.com/pointfreeco/swift-snapshot-testing @ 1.19.2
  swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.0
  swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 1.5.0
resolved source packages: xctest-dynamic-overlay, swift-snapshot-testing, swift-syntax, swift-custom-dump
{
  "dependencies" : [
  ],
  "manifest_display_name" : "RotatingLabel",
  "name" : "RotatingLabel",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "RotatingLabel",
      "targets" : [
        "RotatingLabel"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RotatingLabel",
      "module_type" : "SwiftTarget",
      "name" : "RotatingLabel",
      "path" : "RotatingLabel",
      "product_memberships" : [
        "RotatingLabel"
      ],
      "sources" : [
        "DiffingFunction.swift",
        "RotatingLabel.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
{
  "project" : {
    "configurations" : [
      "Debug",
      "Release"
    ],
    "name" : "RotatingLabel",
    "schemes" : [
      "RotatingLabel",
      "RotatingLabelDemo"
    ],
    "targets" : [
      "RotatingLabel",
      "RotatingLabelTests"
    ]
  }
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "RotatingLabel"
    ]
  }
}
2026-04-13 18:54:53.266 xcodebuild[848:4999] [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 RotatingLabel -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 RotatingLabel -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  RotatingLabel: /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 'RotatingLabel' in project 'RotatingLabel'
        ➜ Explicit dependency on target 'RotatingLabel' in project 'RotatingLabel'
    Target 'RotatingLabel' in project 'RotatingLabel' (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: a556154aa65017b03fa7bab3f939a96a
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/a556154aa65017b03fa7bab3f939a96a.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
ClangStatCache /Applications/Xcode-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/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/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.modulemap (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.DependencyStaticMetadataFileList (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.DependencyMetadataFileList (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.SwiftConstValuesFileList (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.SwiftFileList (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel_const_extract_protocols.json (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-OutputFileMap.json (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.LinkFileList (in target 'RotatingLabel' from project 'RotatingLabel')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.LinkFileList
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps/RotatingLabel.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.modulemap (in target 'RotatingLabel' from project 'RotatingLabel')
    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/RotatingLabel.build/Debug/RotatingLabel.build/RotatingLabel.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps
SwiftDriver RotatingLabel normal arm64 com.apple.xcode.tools.swift.compiler (in target 'RotatingLabel' from project 'RotatingLabel')
    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 RotatingLabel -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.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 -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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.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/RotatingLabel.build/Debug/RotatingLabel.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel_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/RotatingLabel.build/Debug/RotatingLabel.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: error: Unable to resolve module dependency: 'UIKit'
import UIKit
       ^ (in target 'RotatingLabel' from project 'RotatingLabel')
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: note: A dependency of main module 'RotatingLabel'
import UIKit
       ^ (in target 'RotatingLabel' from project 'RotatingLabel')
2026-04-13 18:54:54.848 xcodebuild[860:5079] [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:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: error: unable to resolve module dependency: 'UIKit'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: note: a dependency of main module 'RotatingLabel'
import UIKit
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver RotatingLabel normal arm64 com.apple.xcode.tools.swift.compiler (in target 'RotatingLabel' from project 'RotatingLabel')
	Building workspace spi-builder-workspace with scheme RotatingLabel
(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:
  RotatingLabel: /Users/admin/builder/spi-builder-workspace
resolved source packages: RotatingLabel
2026-04-13 18:55:00.466 xcodebuild[877:5213] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "RotatingLabel",
  "name" : "RotatingLabel",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "tvos",
      "version" : "13.0"
    }
  ],
  "products" : [
    {
      "name" : "RotatingLabel",
      "targets" : [
        "RotatingLabel"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "RotatingLabel",
      "module_type" : "SwiftTarget",
      "name" : "RotatingLabel",
      "path" : "RotatingLabel",
      "product_memberships" : [
        "RotatingLabel"
      ],
      "sources" : [
        "DiffingFunction.swift",
        "RotatingLabel.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.1"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "RotatingLabel"
    ]
  }
}
2026-04-13 18:55:01.579 xcodebuild[887:5304] [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 RotatingLabel -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 RotatingLabel -destination platform=macOS,arch=arm64
Resolve Package Graph
Resolved source packages:
  RotatingLabel: /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 'RotatingLabel' in project 'RotatingLabel'
        ➜ Explicit dependency on target 'RotatingLabel' in project 'RotatingLabel'
    Target 'RotatingLabel' in project 'RotatingLabel' (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 RotatingLabel normal arm64 com.apple.xcode.tools.swift.compiler (in target 'RotatingLabel' from project 'RotatingLabel')
    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 RotatingLabel -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.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 -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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel.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/RotatingLabel.build/Debug/RotatingLabel.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel_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/RotatingLabel.build/Debug/RotatingLabel.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/RotatingLabel.build/Debug/RotatingLabel.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/RotatingLabel.build/Debug/RotatingLabel.build/Objects-normal/arm64/RotatingLabel-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: error: Unable to resolve module dependency: 'UIKit'
import UIKit
       ^ (in target 'RotatingLabel' from project 'RotatingLabel')
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: note: A dependency of main module 'RotatingLabel'
import UIKit
       ^ (in target 'RotatingLabel' from project 'RotatingLabel')
2026-04-13 18:55:02.408 xcodebuild[890:5337] [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:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:DriverKit, id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
{ platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:0c8d55a8c8dcc18fec627ddfa1865a6e72b7850f, name:My Mac }
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: error: unable to resolve module dependency: 'UIKit'
import UIKit
       ^
/Users/admin/builder/spi-builder-workspace/RotatingLabel/RotatingLabel.swift:8:8: note: a dependency of main module 'RotatingLabel'
import UIKit
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver RotatingLabel normal arm64 com.apple.xcode.tools.swift.compiler (in target 'RotatingLabel' from project 'RotatingLabel')
	Building workspace spi-builder-workspace with scheme RotatingLabel
(2 failures)
BUILD FAILURE 6.3 macosXcodebuild