Swift Package IndexBuild Information
Failed to build swift-blst, reference 0.1.2 (40438a), with Swift 6.3 for watchOS using Xcode 26.4 on 2 May 2026 07:34:50 UTC.
Build Command
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme swift-blst-Package -destination generic/platform=watchOSBuild Log
========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/Kingpin-Apps/swift-blst.git
Reference: 0.1.2
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/Kingpin-Apps/swift-blst
* tag 0.1.2 -> FETCH_HEAD
HEAD is now at 40438a4 bump: version 0.1.1 → 0.1.2
Cloned https://github.com/Kingpin-Apps/swift-blst.git
Revision (git rev-parse @):
40438a41e6ee4db24627e89730bc46aacb0d1afc
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/Kingpin-Apps/swift-blst.git at 0.1.2
========================================
Build
========================================
Selected platform: watchOS
Swift version: 6.3
Building package at path: $PWD
https://github.com/Kingpin-Apps/swift-blst.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/attaswift/BigInt.git
Creating working copy of package ‘BigInt’
Checking out 5.3.0 of package ‘BigInt’
Resolve Package Graph
Resolved source packages:
BigInt: https://github.com/attaswift/BigInt.git @ 5.3.0
swift-blst: /Users/admin/builder/spi-builder-workspace
resolved source packages: BigInt, swift-blst
2026-05-02 03:34:34.792 xcodebuild[536:3119] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "bigint",
"requirement" : {
"range" : [
{
"lower_bound" : "5.3.0",
"upper_bound" : "5.4.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/attaswift/BigInt.git"
}
],
"manifest_display_name" : "swift-blst",
"name" : "swift-blst",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "14.0"
},
{
"name" : "ios",
"version" : "16.0"
}
],
"products" : [
{
"name" : "CBlst",
"targets" : [
"CBlst"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "SwiftBLST",
"targets" : [
"SwiftBLST"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "_CBlstBinary",
"module_type" : "BinaryTarget",
"name" : "_CBlstBinary",
"path" : "CBlst.xcframework",
"product_memberships" : [
"CBlst",
"SwiftBLST"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "SwiftBLSTTests",
"module_type" : "SwiftTarget",
"name" : "SwiftBLSTTests",
"path" : "Tests/SwiftBLSTTests",
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Tests/SwiftBLSTTests/Vectors",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"G1Tests.swift",
"G2Tests.swift",
"HashToCurveVectorTests.swift",
"Helpers.swift",
"PairingTests.swift"
],
"target_dependencies" : [
"SwiftBLST"
],
"type" : "test"
},
{
"c99name" : "SwiftBLST",
"module_type" : "SwiftTarget",
"name" : "SwiftBLST",
"path" : "Sources/SwiftBLST",
"product_dependencies" : [
"BigInt"
],
"product_memberships" : [
"SwiftBLST"
],
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Sources/SwiftBLST/Resources",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"BLSTError.swift",
"Fp12.swift",
"G1Point.swift",
"G2Point.swift",
"Internal/WithUnsafeBlstPointer.swift",
"Pairing.swift",
"Scalar.swift"
],
"target_dependencies" : [
"CBlst"
],
"type" : "library"
},
{
"c99name" : "CBlst",
"module_type" : "ClangTarget",
"name" : "CBlst",
"path" : "CBlstModule",
"product_memberships" : [
"CBlst",
"SwiftBLST"
],
"sources" : [
"shim.c"
],
"target_dependencies" : [
"_CBlstBinary"
],
"type" : "library"
}
],
"tools_version" : "6.2"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"CBlst",
"swift-blst-Package",
"SwiftBLST"
]
}
}
2026-05-02 03:34:42.960 xcodebuild[675:4070] [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 swift-blst-Package -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 swift-blst-Package -destination generic/platform=watchOS
Resolve Package Graph
Resolve Package Graph
Resolved source packages:
swift-blst: /Users/admin/builder/spi-builder-workspace
BigInt: https://github.com/attaswift/BigInt.git @ 5.3.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (7 targets)
Target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'swift-blst_SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'swift-blst_SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'BigInt' in project 'BigInt'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'BigInt' in project 'BigInt' (no dependencies)
Target 'swift-blst_SwiftBLST' in project 'swift-blst' (no dependencies)
Target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
Target 'CBlst' in project 'swift-blst' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.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/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
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 -arch arm64_32 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
ReadFileContents /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 10160d0feefe5bca13bc62b25b4344a2
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/10160d0feefe5bca13bc62b25b4344a2.xcbuilddata
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'SwiftBLST' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'CBlst' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'CBlst' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'SwiftBLST' from project 'swift-blst')
2026-05-02 03:34:45.287 xcodebuild[686:4153] [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 swift-blst-Package
(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:
BigInt: https://github.com/attaswift/BigInt.git @ 5.3.0
swift-blst: /Users/admin/builder/spi-builder-workspace
resolved source packages: BigInt, swift-blst
2026-05-02 03:34:47.539 xcodebuild[724:4383] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
"dependencies" : [
{
"identity" : "bigint",
"requirement" : {
"range" : [
{
"lower_bound" : "5.3.0",
"upper_bound" : "5.4.0"
}
]
},
"type" : "sourceControl",
"url" : "https://github.com/attaswift/BigInt.git"
}
],
"manifest_display_name" : "swift-blst",
"name" : "swift-blst",
"path" : "/Users/admin/builder/spi-builder-workspace",
"platforms" : [
{
"name" : "macos",
"version" : "14.0"
},
{
"name" : "ios",
"version" : "16.0"
}
],
"products" : [
{
"name" : "CBlst",
"targets" : [
"CBlst"
],
"type" : {
"library" : [
"automatic"
]
}
},
{
"name" : "SwiftBLST",
"targets" : [
"SwiftBLST"
],
"type" : {
"library" : [
"automatic"
]
}
}
],
"targets" : [
{
"c99name" : "_CBlstBinary",
"module_type" : "BinaryTarget",
"name" : "_CBlstBinary",
"path" : "CBlst.xcframework",
"product_memberships" : [
"CBlst",
"SwiftBLST"
],
"sources" : [
],
"type" : "binary"
},
{
"c99name" : "SwiftBLSTTests",
"module_type" : "SwiftTarget",
"name" : "SwiftBLSTTests",
"path" : "Tests/SwiftBLSTTests",
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Tests/SwiftBLSTTests/Vectors",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"G1Tests.swift",
"G2Tests.swift",
"HashToCurveVectorTests.swift",
"Helpers.swift",
"PairingTests.swift"
],
"target_dependencies" : [
"SwiftBLST"
],
"type" : "test"
},
{
"c99name" : "SwiftBLST",
"module_type" : "SwiftTarget",
"name" : "SwiftBLST",
"path" : "Sources/SwiftBLST",
"product_dependencies" : [
"BigInt"
],
"product_memberships" : [
"SwiftBLST"
],
"resources" : [
{
"path" : "/Users/admin/builder/spi-builder-workspace/Sources/SwiftBLST/Resources",
"rule" : {
"copy" : {
}
}
}
],
"sources" : [
"BLSTError.swift",
"Fp12.swift",
"G1Point.swift",
"G2Point.swift",
"Internal/WithUnsafeBlstPointer.swift",
"Pairing.swift",
"Scalar.swift"
],
"target_dependencies" : [
"CBlst"
],
"type" : "library"
},
{
"c99name" : "CBlst",
"module_type" : "ClangTarget",
"name" : "CBlst",
"path" : "CBlstModule",
"product_memberships" : [
"CBlst",
"SwiftBLST"
],
"sources" : [
"shim.c"
],
"target_dependencies" : [
"_CBlstBinary"
],
"type" : "library"
}
],
"tools_version" : "6.2"
}
{
"workspace" : {
"name" : "spi-builder-workspace",
"schemes" : [
"CBlst",
"swift-blst-Package",
"SwiftBLST"
]
}
}
2026-05-02 03:34:48.773 xcodebuild[738:4461] [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 swift-blst-Package -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 swift-blst-Package -destination generic/platform=watchOS
Resolve Package Graph
Resolved source packages:
swift-blst: /Users/admin/builder/spi-builder-workspace
BigInt: https://github.com/attaswift/BigInt.git @ 5.3.0
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (7 targets)
Target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'swift-blst_SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'swift-blst_SwiftBLST' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'BigInt' in project 'BigInt'
➜ Explicit dependency on target 'BigInt' in project 'BigInt'
Target 'BigInt' in project 'BigInt' (no dependencies)
Target 'swift-blst_SwiftBLST' in project 'swift-blst' (no dependencies)
Target 'CBlst' in project 'swift-blst'
➜ Explicit dependency on target 'CBlst' in project 'swift-blst'
Target 'CBlst' in project 'swift-blst' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -arch arm64 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.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/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
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 -arch arm64_32 -isysroot /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS26.4.sdk -x c -c /dev/null
ReadFileContents /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/share/docc/features.json
Build description signature: 10160d0feefe5bca13bc62b25b4344a2
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/10160d0feefe5bca13bc62b25b4344a2.xcbuilddata
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'CBlst' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'SwiftBLST' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'SwiftBLST' from project 'swift-blst')
/Users/admin/builder/spi-builder-workspace/CBlst.xcframework:1:1: error: While building for watchOS, no library for this platform was found in '/Users/admin/builder/spi-builder-workspace/CBlst.xcframework'. (in target 'CBlst' from project 'swift-blst')
2026-05-02 03:34:49.750 xcodebuild[744:4503] [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 swift-blst-Package
(1 failure)
BUILD FAILURE 6.3 watchOS