Swift Package Index

Build Information

Failed to build VirtualTerminal, reference main (d4c163), with Swift 6.4 for macOS (SPM) on 23 Sep 2026 17:34:56 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/compnerd/VirtualTerminal.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/compnerd/VirtualTerminal
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at d4c1635 Platform: use a pfn to `write` and reference `Darwin.write`
Cloned https://github.com/compnerd/VirtualTerminal.git
Revision (git rev-parse @):
d4c1635a8780126b5204887f48e15887cd86d7de
SUCCESS checkout https://github.com/compnerd/VirtualTerminal.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/compnerd/VirtualTerminal.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Constructing description]
[Planning deferred tasks]
[44 / 87]
[49 / 90] libunistring
[52 / 98]
[58 / 98] Primitives
[70 / 98] POSIXCore
[77 / 118] Geometry
[83 / 118]
[86 / 118]
[88 / 118]
[94 / 118] POSIXCore
[101 / 119] POSIXCore
[101 / 120] VirtualTerminal
[105 / 135]
[107 / 135]
[119 / 135] VirtualTerminal
Fetching https://github.com/compnerd/swift-platform-core.git
[1/186] Fetching swift-platform-core
Fetched https://github.com/compnerd/swift-platform-core.git (0.87s)
Creating working copy for https://github.com/compnerd/swift-platform-core.git
Working copy of https://github.com/compnerd/swift-platform-core.git resolved at main (b9eb8dd)
error: SwiftCompile normal arm64 /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift failed with a nonzero exit code. Command line:     cd /Users/admin/builder
    builtin-SwiftPerFileCompile TextMetrics.swift
/Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift:14:34: error: cannot find type 'locale_t' in scope
 12 |
 13 | private enum Locale {
 14 |   private static let utf8: Mutex<locale_t?> = Mutex(nil)
    |                                  `- error: cannot find type 'locale_t' in scope
 15 |
 16 |   static var ID_UTF8: locale_t? {
/Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift:16:23: error: cannot find type 'locale_t' in scope
 14 |   private static let utf8: Mutex<locale_t?> = Mutex(nil)
 15 |
 16 |   static var ID_UTF8: locale_t? {
    |                       `- error: cannot find type 'locale_t' in scope
 17 |     return utf8.withLock { locale in
 18 |       if let locale { return locale }
/Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift:19:16: error: cannot find 'newlocale' in scope
 17 |     return utf8.withLock { locale in
 18 |       if let locale { return locale }
 19 |       locale = newlocale(LC_CTYPE_MASK, "en_US.UTF-8", nil)
    |                `- error: cannot find 'newlocale' in scope
 20 |       return locale
 21 |     }
/Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift:19:26: error: cannot find 'LC_CTYPE_MASK' in scope
 17 |     return utf8.withLock { locale in
 18 |       if let locale { return locale }
 19 |       locale = newlocale(LC_CTYPE_MASK, "en_US.UTF-8", nil)
    |                          `- error: cannot find 'LC_CTYPE_MASK' in scope
 20 |       return locale
 21 |     }
/Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift:95:23: error: cannot find 'wcwidth_l' in scope
 93 |     // Normal width character                       -> 1
 94 |     // Wide character (CJK, etc.)                   -> 2
 95 |     return max(1, Int(wcwidth_l(wchar_t(value), Locale.ID_UTF8)))
    |                       `- error: cannot find 'wcwidth_l' in scope
 96 | #endif
 97 |   }
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -c -primary-file /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/TextMetrics.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/VTBuffer.swift -primary-file /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/VTCell.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/VTPosition.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Buffer/VTStyle.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Extensions/Duration+Extensions.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Extensions/Task+Extensions.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Input/VTEvent.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Input/VTEventStream.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Input/VTInputParser.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Platform/Event+POSIX.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Platform/Event+Windows.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Platform/POSIXTerminal.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Platform/WindowsTerminal.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Protocol/Encoding.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Protocol/ISO6429.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Protocol/Operators.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/CursorMotionOptimizer.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/DeltaCompression.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/SGROptimizer.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/VTBufferedTerminalStream.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/VTDisplayLink.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/VTProfiler.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Rendering/VTRenderer.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Terminal/VTTerminal.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Types/VTColor.swift /Users/admin/builder/spi-builder-workspace/Sources/VirtualTerminal/Types/VTMode.swift -supplementary-output-file-map /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/supplementaryOutputs-1 -target arm64-apple-macos26.0 -disable-cross-import-overlay-search -swift-module-cross-import Darwin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/Darwin.swiftcrossimport/xlocale.swiftoverlay -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftMacros -disable-implicit-swift-modules -Xcc -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VirtualTerminal-dependencies-1.json -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX27.0.sdk -I /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -Isystem /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/PackageFrameworks -F /Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug -F /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -module-cache-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftExplicitPrecompiledModules -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=5 -swift-version 6 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -validate-clang-modules-once -clang-build-session-file /Users/admin/builder/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /Users/admin/builder -enable-anonymous-context-mangled-names -file-compilation-dir /Users/admin/builder -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -ivfsstatcache -Xcc /Users/admin/builder/spi-builder-workspace/.build/out/SDKStatCaches.noindex/macosx27.0-26A425-80c5bbf1d171475443272936d42f90a36a22442a12e9d48fe1a705f55a1adfc4.sdkstatcache -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Products/Debug/include -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name VirtualTerminal -package-name spi_builder_workspace -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VirtualTerminal_const_extract_protocols.json -disable-clang-spi -clang-target arm64-apple-macos27.0 -target-sdk-version 27.0 -target-sdk-name macosx27.0 -in-process-plugin-server-path /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/libSwiftInProcPluginServer.dylib -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/TextMetrics.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VTBuffer.o -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VTCell.o -debug-module-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VirtualTerminal.swiftmodule -index-unit-output-path /VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/TextMetrics.o -index-unit-output-path /VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VTBuffer.o -index-unit-output-path /VirtualTerminal.build/Debug/VirtualTerminal-t.build/Objects-normal/arm64/VTCell.o -index-store-path /Users/admin/builder/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 macosSpm