OKLCHGradient – Build Information

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Build Information

Failed to build OKLCHGradient, reference main (ede198), with Swift 5.10 for watchOS using Xcode 15.4 on 28 Nov 2025 17:40:29 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme OKLCHGradient -destination generic/platform=watchOS

Build Log

========================================
RunAll
========================================
Builder version: 4.68.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/fwrs/OKLCHGradient.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/fwrs/OKLCHGradient
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at ede1989 Migrate to @available and lower the package-wide version requirement
Cloned https://github.com/fwrs/OKLCHGradient.git
Revision (git rev-parse @):
ede1989a8a5e11ece0ec8ad87168b3ab6fd3b234
SUCCESS checkout https://github.com/fwrs/OKLCHGradient.git at main
========================================
Build
========================================
Selected platform:         watchOS
Swift version:             5.10
Building package at path:  $PWD
https://github.com/fwrs/OKLCHGradient.git
Command line invocation:
    /Applications/Xcode-15.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  OKLCHGradient: /Users/admin/builder/spi-builder-workspace
resolved source packages: OKLCHGradient
{
  "dependencies" : [
  ],
  "manifest_display_name" : "OKLCHGradient",
  "name" : "OKLCHGradient",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "OKLCHGradient",
      "targets" : [
        "OKLCHGradient"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OKLCHGradient",
      "module_type" : "SwiftTarget",
      "name" : "OKLCHGradient",
      "path" : "Sources/OKLCHGradient",
      "product_memberships" : [
        "OKLCHGradient"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "OKLCHAngularGradient.swift",
        "OKLCHEllipticalGradient.swift",
        "OKLCHLinearGradient.swift",
        "OKLCHRadialGradient.swift",
        "Utils.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "OKLCHGradient"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme OKLCHGradient -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-15.4.0.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 OKLCHGradient -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  OKLCHGradient: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient'
    Target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient'
    Target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ExecuteExternalTool /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -v
ExecuteExternalTool /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -v -E -dM -isysroot /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk -x c -c /dev/null
ExecuteExternalTool /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -version_details
Build description signature: 87a1b68adb985d9e379e078c7a365432
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/87a1b68adb985d9e379e078c7a365432.xcbuilddata
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products
ClangStatCache /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos10.5-21T569-607812366920c826b3ec796033b57e80.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos10.5-21T569-607812366920c826b3ec796033b57e80.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-watchos
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-watchos
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/PackageFrameworks
MkDir /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/OKLCHGradient_OKLCHGradient.bundle (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    /bin/mkdir -p /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/OKLCHGradient_OKLCHGradient.bundle
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/OKLCHGradient.modulemap (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/OKLCHGradient.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/empty-OKLCHGradient_OKLCHGradient.plist (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/empty-OKLCHGradient_OKLCHGradient.plist
CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/metal -c -target air64-apple-watchos6.0 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -isysroot /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk -ffast-math -serialize-diagnostics /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.dia -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.air -MMD -MT dependencies -MF /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.dat /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:87:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchLinearGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:129:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchRadialGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:171:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchAngularGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:219:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchEllipticalGradient(
   ^~~~~~~~~~
4 errors generated.
ProcessInfoPlistFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/OKLCHGradient_OKLCHGradient.bundle/Info.plist /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/empty-OKLCHGradient_OKLCHGradient.plist (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-infoPlistUtility /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/empty-OKLCHGradient_OKLCHGradient.plist -producttype com.apple.product-type.bundle -expandbuildsettings -format binary -platform watchos -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/OKLCHGradient_OKLCHGradient.bundle/Info.plist
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-watchos/OKLCHGradient.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/OKLCHGradient.modulemap (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    builtin-copy -exclude .DS_Store -exclude CVS -exclude .svn -exclude .git -exclude .hg -resolve-src-symlinks /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/OKLCHGradient.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-watchos
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient_const_extract_protocols.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient.SwiftFileList (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient-OutputFileMap.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/armv7k/OKLCHGradient-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient_const_extract_protocols.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient.SwiftFileList (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient-OutputFileMap.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64_32/OKLCHGradient-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient_const_extract_protocols.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient_const_extract_protocols.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient.SwiftFileList (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/DerivedSources/resource_bundle_accessor.swift (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/DerivedSources/resource_bundle_accessor.swift
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient-OutputFileMap.json (in target 'OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient.build/Objects-normal/arm64/OKLCHGradient-OutputFileMap.json
** BUILD FAILED **
The following build commands failed:
	CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
(1 failure)
Command line invocation:
    /Applications/Xcode-15.4.0.app/Contents/Developer/usr/bin/xcodebuild -IDEClonedSourcePackagesDirPathOverride=/Users/admin/builder/spi-builder-workspace/.dependencies -resolvePackageDependencies
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  OKLCHGradient: /Users/admin/builder/spi-builder-workspace
resolved source packages: OKLCHGradient
{
  "dependencies" : [
  ],
  "manifest_display_name" : "OKLCHGradient",
  "name" : "OKLCHGradient",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "15.0"
    },
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "tvos",
      "version" : "15.0"
    },
    {
      "name" : "visionos",
      "version" : "1.0"
    },
    {
      "name" : "watchos",
      "version" : "6.0"
    }
  ],
  "products" : [
    {
      "name" : "OKLCHGradient",
      "targets" : [
        "OKLCHGradient"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "OKLCHGradient",
      "module_type" : "SwiftTarget",
      "name" : "OKLCHGradient",
      "path" : "Sources/OKLCHGradient",
      "product_memberships" : [
        "OKLCHGradient"
      ],
      "resources" : [
        {
          "path" : "/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal",
          "rule" : {
            "process" : {
            }
          }
        }
      ],
      "sources" : [
        "OKLCHAngularGradient.swift",
        "OKLCHEllipticalGradient.swift",
        "OKLCHLinearGradient.swift",
        "OKLCHRadialGradient.swift",
        "Utils.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.9"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "OKLCHGradient"
    ]
  }
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme OKLCHGradient -destination generic/platform=watchOS
Command line invocation:
    /Applications/Xcode-15.4.0.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 OKLCHGradient -destination generic/platform=watchOS
User defaults from command line:
    IDEClonedSourcePackagesDirPathOverride = /Users/admin/builder/spi-builder-workspace/.dependencies
    IDEDerivedDataPathOverride = /Users/admin/builder/spi-builder-workspace/.derivedData
    IDEPackageSupportUseBuiltinSCM = YES
Resolve Package Graph
Resolved source packages:
  OKLCHGradient: /Users/admin/builder/spi-builder-workspace
Prepare packages
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient'
    Target 'OKLCHGradient' in project 'OKLCHGradient'
        ➜ Explicit dependency on target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient'
    Target 'OKLCHGradient_OKLCHGradient' in project 'OKLCHGradient' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos10.5-21T569-607812366920c826b3ec796033b57e80.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/watchos10.5-21T569-607812366920c826b3ec796033b57e80.sdkstatcache
CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
    cd /Users/admin/builder/spi-builder-workspace
    /Applications/Xcode-15.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/metal -c -target air64-apple-watchos6.0 -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos/include -F/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-watchos -isysroot /Applications/Xcode-15.4.0.app/Contents/Developer/Platforms/WatchOS.platform/Developer/SDKs/WatchOS10.5.sdk -ffast-math -serialize-diagnostics /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.dia -o /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.air -MMD -MT dependencies -MF /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/OKLCHGradient.build/Debug-watchos/OKLCHGradient_OKLCHGradient.build/Metal/OKLCHGradient.dat /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:87:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchLinearGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:129:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchRadialGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:171:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchAngularGradient(
   ^~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal:219:4: error: 'stitchable' attribute requires Metal language standard ios-metal2.3 or higher
[[ stitchable ]] half4 oklchEllipticalGradient(
   ^~~~~~~~~~
4 errors generated.
** BUILD FAILED **
The following build commands failed:
	CompileMetalFile /Users/admin/builder/spi-builder-workspace/Sources/OKLCHGradient/OKLCHGradient.metal (in target 'OKLCHGradient_OKLCHGradient' from project 'OKLCHGradient')
(1 failure)
BUILD FAILURE 5.10 watchOS