Swift Package IndexBuild Information
Failed to build FunctionalAPI, reference 2.1.0 (7941b0), with Swift 6.3 for watchOS using Xcode 26.4 on 13 Apr 2026 08:21:48 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme FunctionalAPI -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/sloik/FunctionalAPI.git
Reference: 2.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/sloik/FunctionalAPI
* tag 2.1.0 -> FETCH_HEAD
HEAD is now at 7941b0f Adds function combinators and Phantom struct.
Cloned https://github.com/sloik/FunctionalAPI.git
Revision (git rev-parse @):
7941b0f441aa9781f69a277987ab86d1a8c74ef2
SUCCESS checkout https://github.com/sloik/FunctionalAPI.git at 2.1.0
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.3
Building package at path: $PWD
https://github.com/sloik/FunctionalAPI.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.git
Fetching from https://github.com/sloik/EitherSwift.git
Fetching from https://github.com/swiftlang/swift-syntax
Fetching from https://github.com/pointfreeco/swift-custom-dump
Fetching from https://github.com/pointfreeco/xctest-dynamic-overlay
Creating working copy of package ‘EitherSwift’
Checking out 1.2.0 of package ‘EitherSwift’
Creating working copy of package ‘swift-custom-dump’
Checking out 1.5.0 of package ‘swift-custom-dump’
Creating working copy of package ‘swift-syntax’
Checking out 603.0.0 of package ‘swift-syntax’
Creating working copy of package ‘xctest-dynamic-overlay’
Checking out 1.9.0 of package ‘xctest-dynamic-overlay’
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
Resolve Package Graph
Resolved source packages:
FunctionalAPI: /Users/admin/builder/spi-builder-workspace
swift-snapshot-testing: https://github.com/pointfreeco/swift-snapshot-testing.git @ 1.19.2
swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 1.5.0
EitherSwift: https://github.com/sloik/EitherSwift.git @ 1.2.0
swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.0
xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.9.0
resolved source packages: FunctionalAPI, swift-snapshot-testing, swift-custom-dump, EitherSwift, swift-syntax, xctest-dynamic-overlay
2026-04-13 04:21:21.716 xcodebuild[529:3074] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-snapshot-testing",
"requirement" : {
"range" : [
{
"lower_bound" : "1.9.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/pointfreeco/swift-snapshot-testing.git"
},
{
"identity" : "eitherswift",
"requirement" : {
"range" : [
{
"lower_bound" : "1.1.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/sloik/EitherSwift.git"
}
],
"manifest_display_name" : "FunctionalAPI",
"name" : "FunctionalAPI",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.13"
},
{
"name" : "ios",
"version" : "14.0"
},
{
"name" : "tvos",
"version" : "11.0"
},
{
"name" : "watchos",
"version" : "4.0"
}
],
"products" : [
{
"name" : "FunctionalAPI",
"targets" : [
"FunctionalAPI"
],
"type" : {
"library" : [
"dynamic"
]
}
}
],
"targets" : [
{
"c99name" : "FunctionalAPITests",
"module_type" : "SwiftTarget",
"name" : "FunctionalAPITests",
"path" : "Tests/FunctionalAPITests",
"product_dependencies" : [
"SnapshotTesting"
],
"sources" : [
"FunctionalAPITests.swift"
],
"target_dependencies" : [
"FunctionalAPI"
],
"type" : "test"
},
{
"c99name" : "FunctionalAPI",
"module_type" : "SwiftTarget",
"name" : "FunctionalAPI",
"path" : "Sources/FunctionalAPI",
"product_dependencies" : [
"EitherSwift"
],
"product_memberships" : [
"FunctionalAPI"
],
"sources" : [
"Development.swift",
"FreeMaps.swift",
"FunctionsCombinators.swift",
"Identity.swift",
"NOPs.swift",
"Phantom.swift"
],
"type" : "library"
}
],
"tools_version" : "5.6"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"EitherSwift",
"FunctionalAPI"
]
}
}
2026-04-13 04:21:31.772 xcodebuild[838:4867] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"EitherSwift",
"FunctionalAPI"
]
}
}
2026-04-13 04:21:34.214 xcodebuild[847:4977] [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 FunctionalAPI -destination generic/platform=watchOS
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 FunctionalAPI -destination generic/platform=watchOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
EitherSwift: https://github.com/sloik/EitherSwift.git @ 1.2.0
swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.0
swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 1.5.0
swift-snapshot-testing: https://github.com/pointfreeco/swift-snapshot-testing.git @ 1.19.2
xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.9.0
FunctionalAPI: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (4 targets)
Target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'EitherSwift' in project 'EitherSwift'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'EitherSwift' in project 'EitherSwift' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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
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/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
Build description signature: c1c01d1a8e50899bb45a6a375d0050cb
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c1c01d1a8e50899bb45a6a375d0050cb.xcbuilddata
error: The package product 'EitherSwift' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'FunctionalAPI' from project 'FunctionalAPI')
error: The package product 'EitherSwift' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'FunctionalAPI' from project 'FunctionalAPI')
2026-04-13 04:21:39.044 xcodebuild[854:5039] [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 FunctionalAPI
(1 failure)
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:
FunctionalAPI: /Users/admin/builder/spi-builder-workspace
swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 1.5.0
swift-snapshot-testing: https://github.com/pointfreeco/swift-snapshot-testing.git @ 1.19.2
xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.9.0
swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.0
EitherSwift: https://github.com/sloik/EitherSwift.git @ 1.2.0
resolved source packages: FunctionalAPI, swift-custom-dump, swift-snapshot-testing, xctest-dynamic-overlay, swift-syntax, EitherSwift
2026-04-13 04:21:42.805 xcodebuild[911:5372] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-snapshot-testing",
"requirement" : {
"range" : [
{
"lower_bound" : "1.9.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/pointfreeco/swift-snapshot-testing.git"
},
{
"identity" : "eitherswift",
"requirement" : {
"range" : [
{
"lower_bound" : "1.1.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/sloik/EitherSwift.git"
}
],
"manifest_display_name" : "FunctionalAPI",
"name" : "FunctionalAPI",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "10.13"
},
{
"name" : "ios",
"version" : "14.0"
},
{
"name" : "tvos",
"version" : "11.0"
},
{
"name" : "watchos",
"version" : "4.0"
}
],
"products" : [
{
"name" : "FunctionalAPI",
"targets" : [
"FunctionalAPI"
],
"type" : {
"library" : [
"dynamic"
]
}
}
],
"targets" : [
{
"c99name" : "FunctionalAPITests",
"module_type" : "SwiftTarget",
"name" : "FunctionalAPITests",
"path" : "Tests/FunctionalAPITests",
"product_dependencies" : [
"SnapshotTesting"
],
"sources" : [
"FunctionalAPITests.swift"
],
"target_dependencies" : [
"FunctionalAPI"
],
"type" : "test"
},
{
"c99name" : "FunctionalAPI",
"module_type" : "SwiftTarget",
"name" : "FunctionalAPI",
"path" : "Sources/FunctionalAPI",
"product_dependencies" : [
"EitherSwift"
],
"product_memberships" : [
"FunctionalAPI"
],
"sources" : [
"Development.swift",
"FreeMaps.swift",
"FunctionsCombinators.swift",
"Identity.swift",
"NOPs.swift",
"Phantom.swift"
],
"type" : "library"
}
],
"tools_version" : "5.6"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"EitherSwift",
"FunctionalAPI"
]
}
}
2026-04-13 04:21:44.635 xcodebuild[922:5456] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"EitherSwift",
"FunctionalAPI"
]
}
}
2026-04-13 04:21:46.223 xcodebuild[927:5502] [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 FunctionalAPI -destination generic/platform=watchOS
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 FunctionalAPI -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
swift-custom-dump: https://github.com/pointfreeco/swift-custom-dump @ 1.5.0
xctest-dynamic-overlay: https://github.com/pointfreeco/xctest-dynamic-overlay @ 1.9.0
FunctionalAPI: /Users/admin/builder/spi-builder-workspace
EitherSwift: https://github.com/sloik/EitherSwift.git @ 1.2.0
swift-snapshot-testing: https://github.com/pointfreeco/swift-snapshot-testing.git @ 1.19.2
swift-syntax: https://github.com/swiftlang/swift-syntax @ 603.0.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (4 targets)
Target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'FunctionalAPI' in project 'FunctionalAPI'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'EitherSwift' in project 'EitherSwift'
➜ Explicit dependency on target 'EitherSwift' in project 'EitherSwift'
Target 'EitherSwift' in project 'EitherSwift' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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
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/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
Build description signature: c1c01d1a8e50899bb45a6a375d0050cb
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/c1c01d1a8e50899bb45a6a375d0050cb.xcbuilddata
error: The package product 'EitherSwift' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'FunctionalAPI' from project 'FunctionalAPI')
error: The package product 'EitherSwift' requires minimum platform version 5.0 for the watchOS platform, but this target supports 4.0 (in target 'FunctionalAPI' from project 'FunctionalAPI')
2026-04-13 04:21:47.877 xcodebuild[931:5546] [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 FunctionalAPI
(1 failure)
BUILD FAILURE 6.3 watchOS