Swift Package IndexBuild Information
Failed to build SIMDson, reference v0.0.1 (42292a), with Swift 6.4 for watchOS using Xcode 27.0 on 21 Sep 2026 01:26:47 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SIMDson -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Catterwaul/SIMDson.git
Reference: v0.0.1
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Catterwaul/SIMDson
* tag v0.0.1 -> FETCH_HEAD
HEAD is now at 42292a4 Add matrix requirements
Cloned https://github.com/Catterwaul/SIMDson.git
Revision (git rev-parse @):
42292a4b3a27ccdcbbef3bea1dd4c5753c4501a1
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/Catterwaul/SIMDson.git at v0.0.1
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.4
Building package at path: $PWD
https://github.com/Catterwaul/SIMDson.git
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Fetching from https://github.com/swiftlang/swift-docc-plugin
Fetching from https://github.com/apple/swift-algorithms
Fetching from https://github.com/Catterwaul/Tuplay
Fetching from https://github.com/Catterwaul/Thrappture
Fetching from https://github.com/apple/swift-numerics.git
Fetching from https://github.com/swiftlang/swift-docc-symbolkit
Creating working copy of package ‘Tuplay’
Checking out main (c6a8e93) of package ‘Tuplay’
Creating working copy of package ‘Thrappture’
Checking out main (cc102d9) of package ‘Thrappture’
Creating working copy of package ‘swift-algorithms’
Checking out main (5b7143f) of package ‘swift-algorithms’
Creating working copy of package ‘swift-numerics’
Checking out 1.1.1 of package ‘swift-numerics’
Creating working copy of package ‘swift-docc-symbolkit’
Checking out 1.0.0 of package ‘swift-docc-symbolkit’
Creating working copy of package ‘swift-docc-plugin’
Checking out main (647c708) of package ‘swift-docc-plugin’
Resolve Package Graph
Resolved source packages:
SIMDson: /Users/admin/builder/spi-builder-workspace
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
swift-algorithms: https://github.com/apple/swift-algorithms @ main (5b7143f)
SwiftDocCPlugin: https://github.com/swiftlang/swift-docc-plugin @ main (647c708)
SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
Tuplé: https://github.com/Catterwaul/Tuplay @ main (c6a8e93)
Thrappture: https://github.com/Catterwaul/Thrappture @ main (cc102d9)
resolved source packages: SIMDson, swift-numerics, swift-algorithms, SwiftDocCPlugin, SymbolKit, Tuplé, Thrappture
2026-09-20 21:25:12.979 xcodebuild[529:3016] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-docc-plugin",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/swiftlang/swift-docc-plugin"
},
{
"identity" : "swift-algorithms",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-algorithms"
},
{
"identity" : "tuplay",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/Catterwaul/Tuplay"
}
],
"manifest_display_name" : "SIMDson",
"name" : "SIMDson",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "16.0"
},
{
"name" : "macos",
"version" : "14.0"
}
],
"products" : [
{
"name" : "SIMDson",
"targets" : [
"SIMDson"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SIMDson_Tests",
"module_type" : "SwiftTarget",
"name" : "SIMDson.Tests",
"path" : "Tests",
"sources" : [
"MatrixTests.swift",
"SIMDTests.swift",
"SpatialTests.swift",
"VectorTests.swift"
],
"target_dependencies" : [
"SIMDson"
],
"type" : "test"
},
{
"c99name" : "SIMDson",
"module_type" : "SwiftTarget",
"name" : "SIMDson",
"path" : "Sources",
"product_dependencies" : [
"Algorithms",
"Tuplé"
],
"product_memberships" : [
"SIMDson"
],
"sources" : [
"FloatingPoint/Matrix/Matrix.swift",
"FloatingPoint/Matrix/Matrix2x2.swift",
"FloatingPoint/Matrix/Matrix2x3.swift",
"FloatingPoint/Matrix/Matrix2x4.swift",
"FloatingPoint/Matrix/Matrix3x2.swift",
"FloatingPoint/Matrix/Matrix3x3.swift",
"FloatingPoint/Matrix/Matrix3x4.swift",
"FloatingPoint/Matrix/Matrix4x4.swift",
"FloatingPoint/Quaternion.swift",
"FloatingPoint/Scalar/Double+FloatingPointScalar.swift",
"FloatingPoint/Scalar/Float+FloatingPointScalar.swift",
"FloatingPoint/Scalar/FloatingPointScalar.swift",
"FloatingPoint/Vector/FloatingPointVector.swift",
"FloatingPoint/Vector/Normalized.swift",
"FloatingPoint/Vector/SIMD2+FloatingPointVector.swift",
"FloatingPoint/Vector/SIMD3+FloatingPointVector.swift",
"FloatingPoint/Vector/SIMD4+FloatingPointVector.swift",
"SIMD.swift",
"Spatial.swift"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
{
"workspace" : {
"name" : "SIMDson",
"schemes" : [
"SIMDson"
]
}
}
2026-09-20 21:26:07.049 xcodebuild[962:5733] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SIMDson -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.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 SIMDson -destination generic/platform=watchOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
Thrappture: https://github.com/Catterwaul/Thrappture @ main (cc102d9)
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
swift-algorithms: https://github.com/apple/swift-algorithms @ main (5b7143f)
SIMDson: /Users/admin/builder/spi-builder-workspace
SwiftDocCPlugin: https://github.com/swiftlang/swift-docc-plugin @ main (647c708)
Tuplé: https://github.com/Catterwaul/Tuplay @ main (c6a8e93)
SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (11 targets)
Target 'SIMDson-product' in project 'SIMDson'
➜ Explicit dependency on target 'SIMDson' in project 'SIMDson'
➜ Explicit dependency on target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Tuplé-product' in project 'Tuplé'
Target 'SIMDson' in project 'SIMDson'
➜ Explicit dependency on target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Tuplé-product' in project 'Tuplé'
Target 'Tuplé-product' in project 'Tuplé'
➜ Explicit dependency on target 'Tuplé' in project 'Tuplé'
➜ Explicit dependency on target 'Thrappture-product' in project 'Thrappture'
Target 'Tuplé' in project 'Tuplé'
➜ Explicit dependency on target 'Thrappture-product' in project 'Thrappture'
Target 'Thrappture-product' in project 'Thrappture'
➜ Explicit dependency on target 'Thrappture' in project 'Thrappture'
Target 'Thrappture' in project 'Thrappture' (no dependencies)
Target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Algorithms' in project 'swift-algorithms'
➜ Explicit dependency on target 'RealModule-product' in project 'swift-numerics'
Target 'Algorithms' in project 'swift-algorithms'
➜ Explicit dependency on target 'RealModule-product' in project 'swift-numerics'
Target 'RealModule-product' in project 'swift-numerics'
➜ Explicit dependency on target 'RealModule' in project 'swift-numerics'
➜ Explicit dependency on target '_NumericsShims' in project 'swift-numerics'
Target 'RealModule' in project 'swift-numerics'
➜ Explicit dependency on target '_NumericsShims' in project 'swift-numerics'
Target '_NumericsShims' in project 'swift-numerics' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc --version
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
ExecuteExternalTool /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64_32 -isysroot /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS27.0.sdk -x c -c /dev/null
ReadFileContents /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 3b3a144552feeb9461578675c0ff0f2d
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/3b3a144552feeb9461578675c0ff0f2d.xcbuilddata
error: The package product 'Tuplé-product' requires minimum platform version 10.0 for the watchOS platform, but this target supports 9.0 (in target 'SIMDson' from project 'SIMDson')
2026-09-20 21:26:18.134 xcodebuild[1013:6094] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace SIMDson with scheme SIMDson
(1 failure)
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
Resolve Package Graph
Resolved source packages:
Thrappture: https://github.com/Catterwaul/Thrappture @ main (cc102d9)
Tuplé: https://github.com/Catterwaul/Tuplay @ main (c6a8e93)
swift-algorithms: https://github.com/apple/swift-algorithms @ main (5b7143f)
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
SwiftDocCPlugin: https://github.com/swiftlang/swift-docc-plugin @ main (647c708)
SIMDson: /Users/admin/builder/spi-builder-workspace
resolved source packages: Thrappture, Tuplé, swift-algorithms, swift-numerics, SymbolKit, SwiftDocCPlugin, SIMDson
2026-09-20 21:26:32.002 xcodebuild[1179:7113] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "swift-docc-plugin",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/swiftlang/swift-docc-plugin"
},
{
"identity" : "swift-algorithms",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-algorithms"
},
{
"identity" : "tuplay",
"requirement" : {
"branch" : [
"main"
]
},
"type" : "sourceControl",
"url" : "https://github.com/Catterwaul/Tuplay"
}
],
"manifest_display_name" : "SIMDson",
"name" : "SIMDson",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "16.0"
},
{
"name" : "macos",
"version" : "14.0"
}
],
"products" : [
{
"name" : "SIMDson",
"targets" : [
"SIMDson"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "SIMDson_Tests",
"module_type" : "SwiftTarget",
"name" : "SIMDson.Tests",
"path" : "Tests",
"sources" : [
"MatrixTests.swift",
"SIMDTests.swift",
"SpatialTests.swift",
"VectorTests.swift"
],
"target_dependencies" : [
"SIMDson"
],
"type" : "test"
},
{
"c99name" : "SIMDson",
"module_type" : "SwiftTarget",
"name" : "SIMDson",
"path" : "Sources",
"product_dependencies" : [
"Algorithms",
"Tuplé"
],
"product_memberships" : [
"SIMDson"
],
"sources" : [
"FloatingPoint/Matrix/Matrix.swift",
"FloatingPoint/Matrix/Matrix2x2.swift",
"FloatingPoint/Matrix/Matrix2x3.swift",
"FloatingPoint/Matrix/Matrix2x4.swift",
"FloatingPoint/Matrix/Matrix3x2.swift",
"FloatingPoint/Matrix/Matrix3x3.swift",
"FloatingPoint/Matrix/Matrix3x4.swift",
"FloatingPoint/Matrix/Matrix4x4.swift",
"FloatingPoint/Quaternion.swift",
"FloatingPoint/Scalar/Double+FloatingPointScalar.swift",
"FloatingPoint/Scalar/Float+FloatingPointScalar.swift",
"FloatingPoint/Scalar/FloatingPointScalar.swift",
"FloatingPoint/Vector/FloatingPointVector.swift",
"FloatingPoint/Vector/Normalized.swift",
"FloatingPoint/Vector/SIMD2+FloatingPointVector.swift",
"FloatingPoint/Vector/SIMD3+FloatingPointVector.swift",
"FloatingPoint/Vector/SIMD4+FloatingPointVector.swift",
"SIMD.swift",
"Spatial.swift"
],
"type" : "library"
}
],
"tools_version" : "6.0"
}
{
"workspace" : {
"name" : "SIMDson",
"schemes" : [
"SIMDson"
]
}
}
2026-09-20 21:26:39.611 xcodebuild[1237:7500] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SIMDson -destination generic/platform=watchOS
Command line invocation:
/Applications/Xcode-27.0.0-Release.Candidate.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 SIMDson -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
Tuplé: https://github.com/Catterwaul/Tuplay @ main (c6a8e93)
swift-numerics: https://github.com/apple/swift-numerics.git @ 1.1.1
Thrappture: https://github.com/Catterwaul/Thrappture @ main (cc102d9)
SymbolKit: https://github.com/swiftlang/swift-docc-symbolkit @ 1.0.0
SwiftDocCPlugin: https://github.com/swiftlang/swift-docc-plugin @ main (647c708)
swift-algorithms: https://github.com/apple/swift-algorithms @ main (5b7143f)
SIMDson: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (11 targets)
Target 'SIMDson-product' in project 'SIMDson'
➜ Explicit dependency on target 'SIMDson' in project 'SIMDson'
➜ Explicit dependency on target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Tuplé-product' in project 'Tuplé'
Target 'SIMDson' in project 'SIMDson'
➜ Explicit dependency on target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Tuplé-product' in project 'Tuplé'
Target 'Tuplé-product' in project 'Tuplé'
➜ Explicit dependency on target 'Tuplé' in project 'Tuplé'
➜ Explicit dependency on target 'Thrappture-product' in project 'Thrappture'
Target 'Tuplé' in project 'Tuplé'
➜ Explicit dependency on target 'Thrappture-product' in project 'Thrappture'
Target 'Thrappture-product' in project 'Thrappture'
➜ Explicit dependency on target 'Thrappture' in project 'Thrappture'
Target 'Thrappture' in project 'Thrappture' (no dependencies)
Target 'Algorithms-product' in project 'swift-algorithms'
➜ Explicit dependency on target 'Algorithms' in project 'swift-algorithms'
➜ Explicit dependency on target 'RealModule-product' in project 'swift-numerics'
Target 'Algorithms' in project 'swift-algorithms'
➜ Explicit dependency on target 'RealModule-product' in project 'swift-numerics'
Target 'RealModule-product' in project 'swift-numerics'
➜ Explicit dependency on target 'RealModule' in project 'swift-numerics'
➜ Explicit dependency on target '_NumericsShims' in project 'swift-numerics'
Target 'RealModule' in project 'swift-numerics'
➜ Explicit dependency on target '_NumericsShims' in project 'swift-numerics'
Target '_NumericsShims' in project 'swift-numerics' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
error: The package product 'Tuplé-product' requires minimum platform version 10.0 for the watchOS platform, but this target supports 9.0 (in target 'SIMDson' from project 'SIMDson')
2026-09-20 21:26:46.496 xcodebuild[1288:7856] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace SIMDson with scheme SIMDson
(1 failure)
BUILD FAILURE 6.4 watchOS