Swift Package IndexBuild Information
Failed to build Mobius, reference master (74baa7), with Swift 6.2 for watchOS using Xcode 26.3 on 27 Mar 2026 03:34:18 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.0.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 4.69.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/spotify/Mobius.swift.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/spotify/Mobius.swift
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 74baa7e Merge pull request #209 from mjburghard/add-EmptyDisposable
Cloned https://github.com/spotify/Mobius.swift.git
Revision (git rev-parse @):
74baa7e07b86ae4c2673204a92230db397b8a6ae
SUCCESS checkout https://github.com/spotify/Mobius.swift.git at master
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.2
Building package at path: $PWD
https://github.com/spotify/Mobius.swift.git
Command line invocation:
/Applications/Xcode-26.0.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/Quick/Nimble
Fetching from https://github.com/Quick/Quick
Fetching from https://github.com/pointfreeco/swift-case-paths
Fetching from https://github.com/mattgallagher/CwlPreconditionTesting.git
Fetching from https://github.com/mattgallagher/CwlCatchException.git
Fetching from https://github.com/apple/swift-algorithms.git
Fetching from https://github.com/apple/swift-argument-parser.git
Fetching from https://github.com/apple/swift-numerics.git
Creating working copy of package ‘Nimble’
Checking out 10.0.0 of package ‘Nimble’
Creating working copy of package ‘CwlPreconditionTesting’
Checking out 2.2.2 of package ‘CwlPreconditionTesting’
Creating working copy of package ‘Quick’
Checking out 7.6.2 of package ‘Quick’
Creating working copy of package ‘swift-numerics’
Checking out 1.1.1 of package ‘swift-numerics’
Creating working copy of package ‘CwlCatchException’
Checking out 2.2.1 of package ‘CwlCatchException’
Creating working copy of package ‘swift-argument-parser’
Checking out 1.7.1 of package ‘swift-argument-parser’
Creating working copy of package ‘swift-case-paths’
Checking out 0.10.1 of package ‘swift-case-paths’
Creating working copy of package ‘swift-algorithms’
Checking out 1.2.1 of package ‘swift-algorithms’
Resolve Package Graph
Resolved source packages:
swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
Mobius: /Users/admin/builder/spi-builder-workspace
Quick: https://github.com/Quick/Quick @ 7.6.2
Nimble: https://github.com/Quick/Nimble @ 10.0.0
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
resolved source packages: swift-case-paths, CwlCatchException, swift-algorithms, swift-argument-parser, Mobius, Quick, Nimble, swift-numerics, CwlPreconditionTesting
2026-03-26 23:33:53.862 xcodebuild[517:3002] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-case-paths",
"requirement" : {
"range" : [
{
"lower_bound" : "0.10.1",
"upper_bound" : "0.11.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/pointfreeco/swift-case-paths"
},
{
"identity" : "nimble",
"requirement" : {
"range" : [
{
"lower_bound" : "10.0.0",
"upper_bound" : "11.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/Quick/Nimble"
},
{
"identity" : "quick",
"requirement" : {
"range" : [
{
"lower_bound" : "7.0.0",
"upper_bound" : "8.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/Quick/Quick"
}
],
"manifest_display_name" : "Mobius",
"name" : "Mobius",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "10.0"
},
{
"name" : "macos",
"version" : "10.12"
},
{
"name" : "tvos",
"version" : "10.0"
},
{
"name" : "watchos",
"version" : "3.0"
}
],
"products" : [
{
"name" : "MobiusCore",
"targets" : [
"MobiusCore"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusExtras",
"targets" : [
"MobiusExtras"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusNimble",
"targets" : [
"MobiusNimble"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusTest",
"targets" : [
"MobiusTest"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"swift_languages_versions" : [
"5"
],
"targets" : [
{
"c99name" : "MobiusThrowableAssertion",
"module_type" : "ClangTarget",
"name" : "MobiusThrowableAssertion",
"path" : "MobiusThrowableAssertion/Source",
"sources" : [
"MobiusThrowableAssertion.m"
],
"type" : "library"
},
{
"c99name" : "MobiusTestTests",
"module_type" : "SwiftTarget",
"name" : "MobiusTestTests",
"path" : "MobiusTest/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"DebugDiffTests.swift",
"FirstMatchersTests.swift",
"InitSpecTests.swift",
"NextMatchersTests.swift",
"TestUtil.swift",
"UpdateSpecTests.swift"
],
"target_dependencies" : [
"MobiusTest"
],
"type" : "test"
},
{
"c99name" : "MobiusTest",
"module_type" : "SwiftTarget",
"name" : "MobiusTest",
"path" : "MobiusTest/Source",
"product_memberships" : [
"MobiusNimble",
"MobiusTest"
],
"sources" : [
"DebugDiff.swift",
"FirstMatchers.swift",
"InitSpec.swift",
"MatcherUtils.swift",
"NextMatchers.swift",
"SimpleDiff.swift",
"UpdateSpec.swift"
],
"target_dependencies" : [
"MobiusCore"
],
"type" : "library"
},
{
"c99name" : "MobiusNimbleTests",
"module_type" : "SwiftTarget",
"name" : "MobiusNimbleTests",
"path" : "MobiusNimble/Test",
"product_dependencies" : [
"Quick"
],
"sources" : [
"NimbleFirstMatchersTests.swift",
"NimbleNextMatchersTests.swift",
"TestUtil.swift"
],
"target_dependencies" : [
"MobiusNimble"
],
"type" : "test"
},
{
"c99name" : "MobiusNimble",
"module_type" : "SwiftTarget",
"name" : "MobiusNimble",
"path" : "MobiusNimble/Source",
"product_dependencies" : [
"Nimble"
],
"product_memberships" : [
"MobiusNimble"
],
"sources" : [
"NimbleFirstMatchers.swift",
"NimbleNextMatchers.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusTest"
],
"type" : "library"
},
{
"c99name" : "MobiusExtrasTests",
"module_type" : "SwiftTarget",
"name" : "MobiusExtrasTests",
"path" : "MobiusExtras/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"ConnectableClassTests.swift",
"ConnectableContramapTests.swift",
"ConnectableMapTests.swift",
"CopyableTests.swift",
"EventSource+ExtensionsTests.swift",
"WikiTutorialTest.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusExtras",
"MobiusThrowableAssertion"
],
"type" : "test"
},
{
"c99name" : "MobiusExtras",
"module_type" : "SwiftTarget",
"name" : "MobiusExtras",
"path" : "MobiusExtras/Source",
"product_memberships" : [
"MobiusExtras"
],
"sources" : [
"BeginnerLoop.swift",
"ConnectableClass.swift",
"ConnectableContramap.swift",
"ConnectableMap.swift",
"Copyable.swift",
"EventSourceMap.swift",
"SimpleLogger.swift"
],
"target_dependencies" : [
"MobiusCore"
],
"type" : "library"
},
{
"c99name" : "MobiusCoreTests",
"module_type" : "SwiftTarget",
"name" : "MobiusCoreTests",
"path" : "MobiusCore/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"AnonymousDisposableTests.swift",
"AnyConnectionTests.swift",
"AnyMobiusLoggerTests.swift",
"AsyncDispatchQueueConnectableTests.swift",
"CompositeDisposableTests.swift",
"ConnectablePublisherTests.swift",
"EffectHandlers/AnyEffectHandlerTests.swift",
"EffectHandlers/CallbackTests.swift",
"EffectHandlers/EffectHandlerTests.swift",
"EffectHandlers/EffectRouterDSLTests.swift",
"EffectHandlers/EffectRouterTests.swift",
"EffectHandlers/EnumRouteTests.swift",
"EventRouterDisposalLogicalRaceRegressionTest.swift",
"EventSources/AnyEventSourceTests.swift",
"EventSources/CompositeEventSourceBuilderTests.swift",
"FirstTests.swift",
"InitializationTests.swift",
"LoggingInitiateTests.swift",
"LoggingUpdateTests.swift",
"MobiusControllerTests.swift",
"MobiusHooksTests.swift",
"MobiusIntegrationTests.swift",
"MobiusLoopTests.swift",
"NextTests.swift",
"NonReentrancyTests.swift",
"Task+DisposableTests.swift",
"TestingErrorHandler.swift",
"TestingUtil.swift",
"WorkBagTests.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusThrowableAssertion"
],
"type" : "test"
},
{
"c99name" : "MobiusCore",
"module_type" : "SwiftTarget",
"name" : "MobiusCore",
"path" : "MobiusCore/Source",
"product_dependencies" : [
"CasePaths"
],
"product_memberships" : [
"MobiusCore",
"MobiusExtras",
"MobiusNimble",
"MobiusTest"
],
"sources" : [
"AsyncDispatchQueueConnectable.swift",
"AsyncStartStopStateMachine.swift",
"ConcurrentAccessDetector.swift",
"Connectable.swift",
"ConnectablePublisher.swift",
"Connection.swift",
"Consumer.swift",
"Disposables/AnonymousDisposable.swift",
"Disposables/CompositeDisposable.swift",
"Disposables/Disposable.swift",
"Disposables/EmptyDisposable.swift",
"Disposables/Task+Disposable.swift",
"EffectHandlers/EffectCallback.swift",
"EffectHandlers/EffectExecutor.swift",
"EffectHandlers/EffectHandler.swift",
"EffectHandlers/EffectRouter.swift",
"EffectHandlers/EffectRouterDSL.swift",
"EffectHandlers/EnumRoute.swift",
"EffectHandlers/ThreadSafeConnectable.swift",
"EventSources/AnyEventSource.swift",
"EventSources/CompositeEventSourceBuilder.swift",
"EventSources/EventSource.swift",
"First.swift",
"Lock.swift",
"LoggingAdaptors.swift",
"Mobius.swift",
"MobiusController.swift",
"MobiusHooks.swift",
"MobiusLogger.swift",
"MobiusLoop.swift",
"Next.swift",
"WorkBag.swift"
],
"type" : "library"
}
],
"tools_version" : "5.2"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"Mobius-Package",
"MobiusCore",
"MobiusExtras",
"MobiusNimble",
"MobiusTest"
]
}
}
2026-03-26 23:34:01.805 xcodebuild[972:5230] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-26.0.0.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 Mobius-Package -destination generic/platform=watchOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
Nimble: https://github.com/Quick/Nimble @ 10.0.0
CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
Quick: https://github.com/Quick/Quick @ 7.6.2
Mobius: /Users/admin/builder/spi-builder-workspace
swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (12 targets)
Target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'Nimble' in project 'Nimble'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'Nimble' in project 'Nimble' (no dependencies)
Target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'CasePaths' in project 'swift-case-paths' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.0.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: b9ad7e354f7bc65114ad5e67929345ef
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/b9ad7e354f7bc65114ad5e67929345ef.xcbuilddata
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusExtras' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'Nimble' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusCore' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusTest' from project 'Mobius')
2026-03-26 23:34:07.961 xcodebuild[984:5326] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace spi-builder-workspace with scheme Mobius-Package
(1 failure)
Command line invocation:
/Applications/Xcode-26.0.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
Quick: https://github.com/Quick/Quick @ 7.6.2
CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
Mobius: /Users/admin/builder/spi-builder-workspace
CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
Nimble: https://github.com/Quick/Nimble @ 10.0.0
resolved source packages: Quick, CwlCatchException, Mobius, CwlPreconditionTesting, swift-numerics, swift-argument-parser, swift-algorithms, swift-case-paths, Nimble
2026-03-26 23:34:12.745 xcodebuild[1104:6054] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-case-paths",
"requirement" : {
"range" : [
{
"lower_bound" : "0.10.1",
"upper_bound" : "0.11.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/pointfreeco/swift-case-paths"
},
{
"identity" : "nimble",
"requirement" : {
"range" : [
{
"lower_bound" : "10.0.0",
"upper_bound" : "11.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/Quick/Nimble"
},
{
"identity" : "quick",
"requirement" : {
"range" : [
{
"lower_bound" : "7.0.0",
"upper_bound" : "8.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/Quick/Quick"
}
],
"manifest_display_name" : "Mobius",
"name" : "Mobius",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "10.0"
},
{
"name" : "macos",
"version" : "10.12"
},
{
"name" : "tvos",
"version" : "10.0"
},
{
"name" : "watchos",
"version" : "3.0"
}
],
"products" : [
{
"name" : "MobiusCore",
"targets" : [
"MobiusCore"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusExtras",
"targets" : [
"MobiusExtras"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusNimble",
"targets" : [
"MobiusNimble"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "MobiusTest",
"targets" : [
"MobiusTest"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"swift_languages_versions" : [
"5"
],
"targets" : [
{
"c99name" : "MobiusThrowableAssertion",
"module_type" : "ClangTarget",
"name" : "MobiusThrowableAssertion",
"path" : "MobiusThrowableAssertion/Source",
"sources" : [
"MobiusThrowableAssertion.m"
],
"type" : "library"
},
{
"c99name" : "MobiusTestTests",
"module_type" : "SwiftTarget",
"name" : "MobiusTestTests",
"path" : "MobiusTest/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"DebugDiffTests.swift",
"FirstMatchersTests.swift",
"InitSpecTests.swift",
"NextMatchersTests.swift",
"TestUtil.swift",
"UpdateSpecTests.swift"
],
"target_dependencies" : [
"MobiusTest"
],
"type" : "test"
},
{
"c99name" : "MobiusTest",
"module_type" : "SwiftTarget",
"name" : "MobiusTest",
"path" : "MobiusTest/Source",
"product_memberships" : [
"MobiusNimble",
"MobiusTest"
],
"sources" : [
"DebugDiff.swift",
"FirstMatchers.swift",
"InitSpec.swift",
"MatcherUtils.swift",
"NextMatchers.swift",
"SimpleDiff.swift",
"UpdateSpec.swift"
],
"target_dependencies" : [
"MobiusCore"
],
"type" : "library"
},
{
"c99name" : "MobiusNimbleTests",
"module_type" : "SwiftTarget",
"name" : "MobiusNimbleTests",
"path" : "MobiusNimble/Test",
"product_dependencies" : [
"Quick"
],
"sources" : [
"NimbleFirstMatchersTests.swift",
"NimbleNextMatchersTests.swift",
"TestUtil.swift"
],
"target_dependencies" : [
"MobiusNimble"
],
"type" : "test"
},
{
"c99name" : "MobiusNimble",
"module_type" : "SwiftTarget",
"name" : "MobiusNimble",
"path" : "MobiusNimble/Source",
"product_dependencies" : [
"Nimble"
],
"product_memberships" : [
"MobiusNimble"
],
"sources" : [
"NimbleFirstMatchers.swift",
"NimbleNextMatchers.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusTest"
],
"type" : "library"
},
{
"c99name" : "MobiusExtrasTests",
"module_type" : "SwiftTarget",
"name" : "MobiusExtrasTests",
"path" : "MobiusExtras/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"ConnectableClassTests.swift",
"ConnectableContramapTests.swift",
"ConnectableMapTests.swift",
"CopyableTests.swift",
"EventSource+ExtensionsTests.swift",
"WikiTutorialTest.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusExtras",
"MobiusThrowableAssertion"
],
"type" : "test"
},
{
"c99name" : "MobiusExtras",
"module_type" : "SwiftTarget",
"name" : "MobiusExtras",
"path" : "MobiusExtras/Source",
"product_memberships" : [
"MobiusExtras"
],
"sources" : [
"BeginnerLoop.swift",
"ConnectableClass.swift",
"ConnectableContramap.swift",
"ConnectableMap.swift",
"Copyable.swift",
"EventSourceMap.swift",
"SimpleLogger.swift"
],
"target_dependencies" : [
"MobiusCore"
],
"type" : "library"
},
{
"c99name" : "MobiusCoreTests",
"module_type" : "SwiftTarget",
"name" : "MobiusCoreTests",
"path" : "MobiusCore/Test",
"product_dependencies" : [
"Nimble",
"Quick"
],
"sources" : [
"AnonymousDisposableTests.swift",
"AnyConnectionTests.swift",
"AnyMobiusLoggerTests.swift",
"AsyncDispatchQueueConnectableTests.swift",
"CompositeDisposableTests.swift",
"ConnectablePublisherTests.swift",
"EffectHandlers/AnyEffectHandlerTests.swift",
"EffectHandlers/CallbackTests.swift",
"EffectHandlers/EffectHandlerTests.swift",
"EffectHandlers/EffectRouterDSLTests.swift",
"EffectHandlers/EffectRouterTests.swift",
"EffectHandlers/EnumRouteTests.swift",
"EventRouterDisposalLogicalRaceRegressionTest.swift",
"EventSources/AnyEventSourceTests.swift",
"EventSources/CompositeEventSourceBuilderTests.swift",
"FirstTests.swift",
"InitializationTests.swift",
"LoggingInitiateTests.swift",
"LoggingUpdateTests.swift",
"MobiusControllerTests.swift",
"MobiusHooksTests.swift",
"MobiusIntegrationTests.swift",
"MobiusLoopTests.swift",
"NextTests.swift",
"NonReentrancyTests.swift",
"Task+DisposableTests.swift",
"TestingErrorHandler.swift",
"TestingUtil.swift",
"WorkBagTests.swift"
],
"target_dependencies" : [
"MobiusCore",
"MobiusThrowableAssertion"
],
"type" : "test"
},
{
"c99name" : "MobiusCore",
"module_type" : "SwiftTarget",
"name" : "MobiusCore",
"path" : "MobiusCore/Source",
"product_dependencies" : [
"CasePaths"
],
"product_memberships" : [
"MobiusCore",
"MobiusExtras",
"MobiusNimble",
"MobiusTest"
],
"sources" : [
"AsyncDispatchQueueConnectable.swift",
"AsyncStartStopStateMachine.swift",
"ConcurrentAccessDetector.swift",
"Connectable.swift",
"ConnectablePublisher.swift",
"Connection.swift",
"Consumer.swift",
"Disposables/AnonymousDisposable.swift",
"Disposables/CompositeDisposable.swift",
"Disposables/Disposable.swift",
"Disposables/EmptyDisposable.swift",
"Disposables/Task+Disposable.swift",
"EffectHandlers/EffectCallback.swift",
"EffectHandlers/EffectExecutor.swift",
"EffectHandlers/EffectHandler.swift",
"EffectHandlers/EffectRouter.swift",
"EffectHandlers/EffectRouterDSL.swift",
"EffectHandlers/EnumRoute.swift",
"EffectHandlers/ThreadSafeConnectable.swift",
"EventSources/AnyEventSource.swift",
"EventSources/CompositeEventSourceBuilder.swift",
"EventSources/EventSource.swift",
"First.swift",
"Lock.swift",
"LoggingAdaptors.swift",
"Mobius.swift",
"MobiusController.swift",
"MobiusHooks.swift",
"MobiusLogger.swift",
"MobiusLoop.swift",
"Next.swift",
"WorkBag.swift"
],
"type" : "library"
}
],
"tools_version" : "5.2"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"Mobius-Package",
"MobiusCore",
"MobiusExtras",
"MobiusNimble",
"MobiusTest"
]
}
}
2026-03-26 23:34:15.295 xcodebuild[1129:6242] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.0.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme Mobius-Package -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-26.0.0.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 Mobius-Package -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
swift-case-paths: https://github.com/pointfreeco/swift-case-paths @ 0.10.1
Mobius: /Users/admin/builder/spi-builder-workspace
swift-algorithms: https://github.com/apple/swift-algorithms.git @ 1.2.1
CwlCatchException: https://github.com/mattgallagher/CwlCatchException.git @ 2.2.1
Quick: https://github.com/Quick/Quick @ 7.6.2
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
swift-argument-parser: https://github.com/apple/swift-argument-parser.git @ 1.7.1
Nimble: https://github.com/Quick/Nimble @ 10.0.0
CwlPreconditionTesting: https://github.com/mattgallagher/CwlPreconditionTesting.git @ 2.2.2
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (12 targets)
Target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'MobiusNimble' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'Nimble' in project 'Nimble'
➜ Explicit dependency on target 'Nimble' in project 'Nimble'
Target 'Nimble' in project 'Nimble' (no dependencies)
Target 'MobiusTest' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusExtras' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'MobiusCore' in project 'Mobius'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'CasePaths' in project 'swift-case-paths'
➜ Explicit dependency on target 'CasePaths' in project 'swift-case-paths'
Target 'CasePaths' in project 'swift-case-paths' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-26.0.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-26.0.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: b9ad7e354f7bc65114ad5e67929345ef
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/b9ad7e354f7bc65114ad5e67929345ef.xcbuilddata
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusTest' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'Nimble' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusNimble' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusCore' from project 'Mobius')
error: The package product 'CasePaths' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'MobiusExtras' from project 'Mobius')
2026-03-26 23:34:17.706 xcodebuild[1141:6339] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace spi-builder-workspace with scheme Mobius-Package
(1 failure)
BUILD FAILURE 6.2 watchOS