Swift Package IndexBuild Information
Failed to build DL4STensorboard, reference 0.1.0 (4d9803), with Swift 6.4 for watchOS using Xcode 27.0 on 15 Sep 2026 21:16:08 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 DL4STensorboard -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/palle-k/DL4S-Tensorboard.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/palle-k/DL4S-Tensorboard
* tag 0.1.0 -> FETCH_HEAD
HEAD is now at 4d98033 minor changes
Cloned https://github.com/palle-k/DL4S-Tensorboard.git
Revision (git rev-parse @):
4d98033d0f414a8db4c39792c0a36e045c1dd1c1
SUCCESS checkout https://github.com/palle-k/DL4S-Tensorboard.git at 0.1.0
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.4
Building package at path: $PWD
https://github.com/palle-k/DL4S-Tensorboard.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/palle-k/DL4S.git
Fetching from https://github.com/twostraws/SwiftGD
Fetching from https://github.com/apple/swift-protobuf.git
Creating working copy of package ‘DL4S’
Checking out master (a06a1d9) of package ‘DL4S’
Creating working copy of package ‘SwiftGD’
Checking out 2.6.0 of package ‘SwiftGD’
Creating working copy of package ‘swift-protobuf’
Checking out 1.38.1 of package ‘swift-protobuf’
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
brew install gd
Resolve Package Graph
you may be able to install gdlib using your system-packager:
brew install gd
Resolved source packages:
DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
DL4STensorboard: /Users/admin/builder/spi-builder-workspace
resolved source packages: DL4S, SwiftProtobuf, SwiftGD, DL4STensorboard
2026-09-15 17:15:12.654 xcodebuild[529:3029] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "dl4s",
"requirement" : {
"branch" : [
"master"
]
},
"type" : "sourceControl",
"url" : "https://github.com/palle-k/DL4S.git"
},
{
"identity" : "swift-protobuf",
"requirement" : {
"range" : [
{
"lower_bound" : "1.6.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-protobuf.git"
},
{
"identity" : "swiftgd",
"requirement" : {
"range" : [
{
"lower_bound" : "2.0.0",
"upper_bound" : "3.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/twostraws/SwiftGD"
}
],
"manifest_display_name" : "DL4STensorboard",
"name" : "DL4STensorboard",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "watchos",
"version" : "6.0"
},
{
"name" : "tvos",
"version" : "13.0"
}
],
"products" : [
{
"name" : "DL4STensorboard",
"targets" : [
"DL4STensorboard"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "DL4STensorboardTests",
"module_type" : "SwiftTarget",
"name" : "DL4STensorboardTests",
"path" : "Tests/DL4STensorboardTests",
"sources" : [
"DL4S_TensorboardTests.swift",
"HistogramTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"DL4STensorboard"
],
"type" : "test"
},
{
"c99name" : "DL4STensorboard",
"module_type" : "SwiftTarget",
"name" : "DL4STensorboard",
"path" : "Sources/DL4STensorboard",
"product_dependencies" : [
"DL4S",
"SwiftProtobuf",
"SwiftGD"
],
"product_memberships" : [
"DL4STensorboard"
],
"sources" : [
"Autogenerated/event.pb.swift",
"Autogenerated/resource_handle.pb.swift",
"Autogenerated/summary.pb.swift",
"Autogenerated/tensor.pb.swift",
"Autogenerated/tensor_shape.pb.swift",
"Autogenerated/types.pb.swift",
"CRC.swift",
"Ext.swift",
"Histogram.swift",
"TSVWriter.swift",
"TensorboardWriter.swift"
],
"type" : "library"
}
],
"tools_version" : "5.2"
}
{
"workspace" : {
"name" : "DL4STensorboard",
"schemes" : [
"DL4STensorboard"
]
}
}
2026-09-15 17:15:56.334 xcodebuild[766:4723] [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 DL4STensorboard -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 DL4STensorboard -destination generic/platform=watchOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
brew install gd
Resolve Package Graph
you may be able to install gdlib using your system-packager:
brew install gd
Resolved source packages:
SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
DL4STensorboard: /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 'DL4STensorboard-product' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4STensorboard' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
Target 'DL4STensorboard' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
Target 'SwiftGD-product' in project 'SwiftGD'
➜ Explicit dependency on target 'SwiftGD' in project 'SwiftGD'
Target 'SwiftGD' in project 'SwiftGD'
➜ Explicit dependency on target 'gd' in project 'SwiftGD'
Target 'gd' in project 'SwiftGD' (no dependencies)
Target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
Target 'SwiftProtobuf' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
Target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf' (no dependencies)
Target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'DL4S' in project 'DL4S'
➜ Explicit dependency on target 'MKL' in project 'DL4S'
Target 'DL4S' in project 'DL4S'
➜ Explicit dependency on target 'MKL' in project 'DL4S'
Target 'MKL' in project 'DL4S' (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: 5bdb8614d751c0dd243891a835754674
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/5bdb8614d751c0dd243891a835754674.xcbuilddata
error: The package product 'DL4S-product' requires minimum platform version 11.0 for the watchOS platform, but this target supports 9.0 (in target 'DL4STensorboard' from project 'DL4STensorboard')
2026-09-15 17:15:59.965 xcodebuild[775:4779] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace DL4STensorboard with scheme DL4STensorboard
(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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
brew install gd
Resolved source packages:
DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
DL4STensorboard: /Users/admin/builder/spi-builder-workspace
resolved source packages: DL4S, SwiftProtobuf, SwiftGD, DL4STensorboard
2026-09-15 17:16:03.518 xcodebuild[826:5040] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "dl4s",
"requirement" : {
"branch" : [
"master"
]
},
"type" : "sourceControl",
"url" : "https://github.com/palle-k/DL4S.git"
},
{
"identity" : "swift-protobuf",
"requirement" : {
"range" : [
{
"lower_bound" : "1.6.0",
"upper_bound" : "2.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/apple/swift-protobuf.git"
},
{
"identity" : "swiftgd",
"requirement" : {
"range" : [
{
"lower_bound" : "2.0.0",
"upper_bound" : "3.0.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/twostraws/SwiftGD"
}
],
"manifest_display_name" : "DL4STensorboard",
"name" : "DL4STensorboard",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "ios",
"version" : "13.0"
},
{
"name" : "macos",
"version" : "10.15"
},
{
"name" : "watchos",
"version" : "6.0"
},
{
"name" : "tvos",
"version" : "13.0"
}
],
"products" : [
{
"name" : "DL4STensorboard",
"targets" : [
"DL4STensorboard"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "DL4STensorboardTests",
"module_type" : "SwiftTarget",
"name" : "DL4STensorboardTests",
"path" : "Tests/DL4STensorboardTests",
"sources" : [
"DL4S_TensorboardTests.swift",
"HistogramTests.swift",
"XCTestManifests.swift"
],
"target_dependencies" : [
"DL4STensorboard"
],
"type" : "test"
},
{
"c99name" : "DL4STensorboard",
"module_type" : "SwiftTarget",
"name" : "DL4STensorboard",
"path" : "Sources/DL4STensorboard",
"product_dependencies" : [
"DL4S",
"SwiftProtobuf",
"SwiftGD"
],
"product_memberships" : [
"DL4STensorboard"
],
"sources" : [
"Autogenerated/event.pb.swift",
"Autogenerated/resource_handle.pb.swift",
"Autogenerated/summary.pb.swift",
"Autogenerated/tensor.pb.swift",
"Autogenerated/tensor_shape.pb.swift",
"Autogenerated/types.pb.swift",
"CRC.swift",
"Ext.swift",
"Histogram.swift",
"TSVWriter.swift",
"TensorboardWriter.swift"
],
"type" : "library"
}
],
"tools_version" : "5.2"
}
{
"workspace" : {
"name" : "DL4STensorboard",
"schemes" : [
"DL4STensorboard"
]
}
}
2026-09-15 17:16:05.597 xcodebuild[842:5121] [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 DL4STensorboard -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 DL4STensorboard -destination generic/platform=watchOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gdlib using your system-packager:
brew install gd
Resolved source packages:
DL4S: https://github.com/palle-k/DL4S.git @ master (a06a1d9)
DL4STensorboard: /Users/admin/builder/spi-builder-workspace
SwiftProtobuf: https://github.com/apple/swift-protobuf.git @ 1.38.1
SwiftGD: https://github.com/twostraws/SwiftGD @ 2.6.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (11 targets)
Target 'DL4STensorboard-product' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4STensorboard' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
Target 'DL4STensorboard' in project 'DL4STensorboard'
➜ Explicit dependency on target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftGD-product' in project 'SwiftGD'
Target 'SwiftGD-product' in project 'SwiftGD'
➜ Explicit dependency on target 'SwiftGD' in project 'SwiftGD'
Target 'SwiftGD' in project 'SwiftGD'
➜ Explicit dependency on target 'gd' in project 'SwiftGD'
Target 'gd' in project 'SwiftGD' (no dependencies)
Target 'SwiftProtobuf-product' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
Target 'SwiftProtobuf' in project 'SwiftProtobuf'
➜ Explicit dependency on target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf'
Target 'SwiftProtobuf_SwiftProtobuf' in project 'SwiftProtobuf' (no dependencies)
Target 'DL4S-product' in project 'DL4S'
➜ Explicit dependency on target 'DL4S' in project 'DL4S'
➜ Explicit dependency on target 'MKL' in project 'DL4S'
Target 'DL4S' in project 'DL4S'
➜ Explicit dependency on target 'MKL' in project 'DL4S'
Target 'MKL' in project 'DL4S' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
error: The package product 'DL4S-product' requires minimum platform version 11.0 for the watchOS platform, but this target supports 9.0 (in target 'DL4STensorboard' from project 'DL4STensorboard')
2026-09-15 17:16:07.419 xcodebuild[851:5160] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
** BUILD FAILED **
The following build commands failed:
Building workspace DL4STensorboard with scheme DL4STensorboard
(1 failure)
BUILD FAILURE 6.4 watchOS