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Build Information

Failed to build SwiftySass, reference master (0487ed), with Swift 6.3 for visionOS using Xcode 26.4 on 11 Apr 2026 17:58:30 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun xcodebuild -IDEClonedSourcePackagesDirPathOverride=$PWD/.dependencies -skipMacroValidation -skipPackagePluginValidation -derivedDataPath $PWD/.derivedData build -scheme SwiftySass -destination generic/platform=xrOS

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/r-thomson/SwiftySass.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/r-thomson/SwiftySass
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0487ed7 Add deprecation notice to README.md
Cloned https://github.com/r-thomson/SwiftySass.git
Revision (git rev-parse @):
0487ed7218a3e852e8d41590e2136e82e3a4878a
SUCCESS checkout https://github.com/r-thomson/SwiftySass.git at master
========================================
Build
========================================
Selected platform:         visionOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/r-thomson/SwiftySass.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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libsass using your system-packager:
    brew install libsass
Resolve Package Graph
you may be able to install libsass using your system-packager:
    brew install libsass
Resolved source packages:
  SwiftySass: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftySass
2026-04-11 13:58:12.518 xcodebuild[529:3040] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftySass",
  "name" : "SwiftySass",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftySass",
      "targets" : [
        "SwiftySass"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftySassTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftySassTests",
      "path" : "Tests/SwiftySassTests",
      "sources" : [
        "ContextOptionsTests.swift",
        "SwiftySassTests.swift",
        "TestResources.swift"
      ],
      "target_dependencies" : [
        "SwiftySass"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftySass",
      "module_type" : "SwiftTarget",
      "name" : "SwiftySass",
      "path" : "Sources/SwiftySass",
      "product_memberships" : [
        "SwiftySass"
      ],
      "sources" : [
        "Errors.swift",
        "SassContext.swift",
        "SassOptionTypes.swift",
        "SassOptions.swift",
        "SwiftySass.swift"
      ],
      "target_dependencies" : [
        "CLibSass"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CLibSass",
      "module_type" : "SystemLibraryTarget",
      "name" : "CLibSass",
      "path" : "Sources/CLibSass",
      "product_memberships" : [
        "SwiftySass"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.1"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SwiftySass"
    ]
  }
}
2026-04-11 13:58:20.519 xcodebuild[638:3812] [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 SwiftySass -destination generic/platform=xrOS
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 SwiftySass -destination generic/platform=xrOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libsass using your system-packager:
    brew install libsass
Resolved source packages:
  SwiftySass: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'SwiftySass' in project 'SwiftySass'
        ➜ Explicit dependency on target 'SwiftySass' in project 'SwiftySass'
    Target 'SwiftySass' in project 'SwiftySass'
        ➜ Explicit dependency on target 'CLibSass' in project 'SwiftySass'
    Target 'CLibSass' in project 'SwiftySass' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
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/XROS.platform/Developer/SDKs/XROS26.4.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/ld -version_details
Build description signature: 4a0191f617ef61cfe4b2077ffed402d0
Build description path: /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/XCBuildData/4a0191f617ef61cfe4b2077ffed402d0.xcbuilddata
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
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
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/ExplicitPrecompiledModules
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/EagerLinkingTBDs/Debug-xros
    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-xros
CreateBuildDirectory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/PackageFrameworks
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-create-build-directory /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/PackageFrameworks
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.DependencyMetadataFileList (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.DependencyMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.modulemap (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.modulemap
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.DependencyStaticMetadataFileList (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.DependencyStaticMetadataFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftFileList (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftConstValuesFileList (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftConstValuesFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.LinkFileList (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.LinkFileList
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-OutputFileMap.json (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-OutputFileMap.json
WriteAuxiliaryFile /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass_const_extract_protocols.json (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace
    write-file /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass_const_extract_protocols.json
Copy /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-xros/SwiftySass.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.modulemap (in target 'SwiftySass' from project 'SwiftySass')
    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/SwiftySass.build/Debug-xros/SwiftySass.build/SwiftySass.modulemap /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/GeneratedModuleMaps-xros
SwiftDriver SwiftySass normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SwiftySass -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk -target arm64-apple-xros1.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/Library/Frameworks -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
error: Clang dependency scanning failure: /Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap:2:9: error: header '/usr/local/include/sass.h' not found
CLibSass-49ab0bfa.input:1:1: fatal error: could not build module 'CLibSass'
 (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: error: Unable to resolve module dependency: 'CLibSass'
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: note: A dependency of main module 'SwiftySass'
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptionTypes.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptions.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SwiftySass.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
2026-04-11 13:58:22.015 xcodebuild[652:3882] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
error: clang dependency scanning failure: /Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap:2:9: error: header '/usr/local/include/sass.h' not found
CLibSass-49ab0bfa.input:1:1: fatal error: could not build module 'CLibSass'
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: error: unable to resolve module dependency: 'CLibSass'
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: note: a dependency of main module 'SwiftySass'
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptionTypes.swift:1:8: note: also imported here
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptions.swift:1:8: note: also imported here
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SwiftySass.swift:1:8: note: also imported here
import CLibSass
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver SwiftySass normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftySass' from project 'SwiftySass')
	Building workspace spi-builder-workspace with scheme SwiftySass
(2 failures)
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
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libsass using your system-packager:
    brew install libsass
Resolved source packages:
  SwiftySass: /Users/admin/builder/spi-builder-workspace
resolved source packages: SwiftySass
2026-04-11 13:58:27.225 xcodebuild[685:4081] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "SwiftySass",
  "name" : "SwiftySass",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "SwiftySass",
      "targets" : [
        "SwiftySass"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SwiftySassTests",
      "module_type" : "SwiftTarget",
      "name" : "SwiftySassTests",
      "path" : "Tests/SwiftySassTests",
      "sources" : [
        "ContextOptionsTests.swift",
        "SwiftySassTests.swift",
        "TestResources.swift"
      ],
      "target_dependencies" : [
        "SwiftySass"
      ],
      "type" : "test"
    },
    {
      "c99name" : "SwiftySass",
      "module_type" : "SwiftTarget",
      "name" : "SwiftySass",
      "path" : "Sources/SwiftySass",
      "product_memberships" : [
        "SwiftySass"
      ],
      "sources" : [
        "Errors.swift",
        "SassContext.swift",
        "SassOptionTypes.swift",
        "SassOptions.swift",
        "SwiftySass.swift"
      ],
      "target_dependencies" : [
        "CLibSass"
      ],
      "type" : "library"
    },
    {
      "c99name" : "CLibSass",
      "module_type" : "SystemLibraryTarget",
      "name" : "CLibSass",
      "path" : "Sources/CLibSass",
      "product_memberships" : [
        "SwiftySass"
      ],
      "sources" : [
      ],
      "type" : "system-target"
    }
  ],
  "tools_version" : "5.1"
}
{
  "workspace" : {
    "name" : "spi-builder-workspace",
    "schemes" : [
      "SwiftySass"
    ]
  }
}
2026-04-11 13:58:28.466 xcodebuild[702:4183] [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 SwiftySass -destination generic/platform=xrOS
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 SwiftySass -destination generic/platform=xrOS
Resolve Package Graph
failed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install libsass using your system-packager:
    brew install libsass
Resolved source packages:
  SwiftySass: /Users/admin/builder/spi-builder-workspace
ComputePackagePrebuildTargetDependencyGraph
Prepare packages
CreateBuildRequest
SendProjectDescription
CreateBuildOperation
ComputeTargetDependencyGraph
note: Building targets in dependency order
note: Target dependency graph (3 targets)
    Target 'SwiftySass' in project 'SwiftySass'
        ➜ Explicit dependency on target 'SwiftySass' in project 'SwiftySass'
    Target 'SwiftySass' in project 'SwiftySass'
        ➜ Explicit dependency on target 'CLibSass' in project 'SwiftySass'
    Target 'CLibSass' in project 'SwiftySass' (no dependencies)
GatherProvisioningInputs
CreateBuildDescription
ClangStatCache /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang-stat-cache /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk -o /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache
SwiftDriver SwiftySass normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftySass' from project 'SwiftySass')
    cd /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode
    builtin-SwiftDriver -- /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc -module-name SwiftySass -Onone @/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.SwiftFileList -DSWIFT_PACKAGE -DDEBUG -DSWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -Xcc -fmodule-map-file\=/Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap -DXcode -plugin-path /Applications/Xcode-26.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins/testing -enable-experimental-feature DebugDescriptionMacro -sdk /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk -target arm64-apple-xros1.0 -g -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -Xfrontend -serialize-debugging-options -profile-coverage-mapping -profile-generate -enable-testing -index-store-path /Users/admin/builder/spi-builder-workspace/.derivedData/Index.noindex/DataStore -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -swift-version 5 -I /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -Isystem /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/Library/Frameworks -F /Applications/Xcode-26.4.0.app/Contents/Developer/Platforms/XROS.platform/Developer/SDKs/XROS26.4.sdk/Developer/Library/Frameworks -c -j10 -enable-batch-mode -incremental -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.derivedData/SDKStatCaches.noindex/xros26.4-23O238-688ef53f1462e2c8f657fdc38a81448fc42b1e75d12c8f651050d7e98f89897c.sdkstatcache -output-file-map /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-OutputFileMap.json -use-frontend-parseable-output -save-temps -no-color-diagnostics -explicit-module-build -module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftExplicitPrecompiledModules -clang-scanner-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -sdk-module-cache-path /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex -serialize-diagnostics -emit-dependencies -emit-module -emit-module-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass.swiftmodule -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.derivedData/ModuleCache.noindex/Session.modulevalidation -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/swift-overrides.hmap -emit-const-values -Xfrontend -const-gather-protocols-file -Xfrontend /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass_const_extract_protocols.json -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Products/Debug-xros/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -emit-objc-header -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.derivedData/Build/Intermediates.noindex/SwiftySass.build/Debug-xros/SwiftySass.build/Objects-normal/arm64/SwiftySass-Swift.h -working-directory /Users/admin/builder/spi-builder-workspace/.swiftpm/xcode -experimental-emit-module-separately -disable-cmo
error: Clang dependency scanning failure: /Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap:2:9: error: header '/usr/local/include/sass.h' not found
CLibSass-085a86a7.input:1:1: fatal error: could not build module 'CLibSass'
 (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: error: Unable to resolve module dependency: 'CLibSass'
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: note: A dependency of main module 'SwiftySass'
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptionTypes.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptions.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SwiftySass.swift:1:8: note: Also imported here
import CLibSass
       ^ (in target 'SwiftySass' from project 'SwiftySass')
2026-04-11 13:58:29.481 xcodebuild[712:4224] [MT] IDERunDestination: Supported platforms for the buildables in the current scheme is empty.
error: clang dependency scanning failure: /Users/admin/builder/spi-builder-workspace/Sources/CLibSass/module.modulemap:2:9: error: header '/usr/local/include/sass.h' not found
CLibSass-085a86a7.input:1:1: fatal error: could not build module 'CLibSass'
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: error: unable to resolve module dependency: 'CLibSass'
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassContext.swift:1:8: note: a dependency of main module 'SwiftySass'
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptionTypes.swift:1:8: note: also imported here
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SassOptions.swift:1:8: note: also imported here
import CLibSass
       ^
/Users/admin/builder/spi-builder-workspace/Sources/SwiftySass/SwiftySass.swift:1:8: note: also imported here
import CLibSass
       ^
** BUILD FAILED **
The following build commands failed:
	SwiftDriver SwiftySass normal arm64 com.apple.xcode.tools.swift.compiler (in target 'SwiftySass' from project 'SwiftySass')
	Building workspace spi-builder-workspace with scheme SwiftySass
(2 failures)
BUILD FAILURE 6.3 visionOS