SwiftTUI – Build Information – Swift Package Index

Build Information

Failed to build SwiftTUI, reference 0.1.0 (75ae35), with Swift 6.4 for Wasm on 18 Sep 2026 14:30:39 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-53886770-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/rensbreur/SwiftTUI.git
Reference: 0.1.0
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/rensbreur/SwiftTUI
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at 75ae35a Add Flags example
Cloned https://github.com/rensbreur/SwiftTUI.git
Revision (git rev-parse @):
75ae35af4115f87601657957e3332fc9eb5829d5
SUCCESS checkout https://github.com/rensbreur/SwiftTUI.git at 0.1.0
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/rensbreur/SwiftTUI.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-53886770-1":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest swift build --swift-sdk swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm 2>&1
wasm-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:4328fdb43c680d205c1d6761b1e3267aa38277eefdda9ddfb17b6a0f1a77857a
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:wasm-6.4-latest
Building for debugging...
[Planning deferred tasks]
[27 / 35] SwiftTUI
[28 / 35] SwiftTUI
error: SwiftCompile normal wasm32 /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rendering/Renderer.swift failed with a nonzero exit code. Command line:     cd /host
    builtin-SwiftPerFileCompile Renderer.swift
/host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rendering/Renderer.swift:141:17: [1;31merror: [1;39mcannot find 'Darwin' in scope[0;0m
[0;36m139 |[0;0m             _ = Glibc.write(STDOUT_FILENO, $0, strlen($0))
[0;36m140 |[0;0m #else
[0;36m141 |[0;0m             _ = [4;39mDarwin[0;0m.write(STDOUT_FILENO, $0, strlen($0))
    [0;36m|[0;0m                 `- [1;31merror: [1;39mcannot find 'Darwin' in scope[0;0m
[0;36m142 |[0;0m #endif
[0;36m143 |[0;0m         }
Failed frontend command:
/usr/bin/swift-frontend -frontend -c /host/spi-builder-workspace/Sources/SwiftTUI/Controls/Control.swift /host/spi-builder-workspace/Sources/SwiftTUI/Controls/Window.swift /host/spi-builder-workspace/Sources/SwiftTUI/Debug/Node+logTree.swift /host/spi-builder-workspace/Sources/SwiftTUI/Debug/log.swift /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Cell.swift /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Color.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Position.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rect.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rendering/Layer.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rendering/LayerDrawing.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Rendering/Renderer.swift -primary-file /host/spi-builder-workspace/Sources/SwiftTUI/Drawing/Size.swift /host/spi-builder-workspace/Sources/SwiftTUI/PropertyWrappers/Binding.swift /host/spi-builder-workspace/Sources/SwiftTUI/PropertyWrappers/State.swift /host/spi-builder-workspace/Sources/SwiftTUI/RunLoop/Application.swift /host/spi-builder-workspace/Sources/SwiftTUI/RunLoop/ArrowKeyParser.swift /host/spi-builder-workspace/Sources/SwiftTUI/SwiftTUI.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/ControlMapper.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/PrimitiveView.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/View.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/ViewContainer.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/ViewWrapper.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Merging/Alignment.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Merging/HStack.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Merging/VStack.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Modifier/Background.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Modifier/Border.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Modifier/FixedFrame.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Modifier/Padding.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/EmptyView.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/ForEach.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/Group.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/Optional+View.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/TupleView.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/ViewBuilder.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Structural/_ConditionalView.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Unary/Button.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Unary/Color+View.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Unary/Spacer.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Unary/Text.swift /host/spi-builder-workspace/Sources/SwiftTUI/View/Views/Unary/TextField.swift /host/spi-builder-workspace/Sources/SwiftTUI/ViewGraph/Node.swift -supplementary-output-file-map /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/supplementaryOutputs-2 -target wasm32-unknown-wasip1 -disable-objc-interop -sdk /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -sysroot /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/WASI.sdk -I /host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32 -module-cache-path /host/spi-builder-workspace/.build/out/ModuleCache.noindex -color-diagnostics -Xcc -fcolor-diagnostics -enable-testing -g -debug-info-format\=dwarf -dwarf-version\=4 -swift-version 5 -Onone -D SWIFT_PACKAGE -D DEBUG -D SWIFT_MODULE_RESOURCE_BUNDLE_UNAVAILABLE -D Xcode -serialize-debugging-options -enable-experimental-feature DebugDescriptionMacro -empty-abi-descriptor -external-plugin-path /usr/lib/swift/host/plugins/testing\#/usr/bin/swift-plugin-server -validate-clang-modules-once -clang-build-session-file /host/spi-builder-workspace/.build/out/ModuleCache.noindex/Session.modulevalidation -Xcc -working-directory -Xcc /host -resource-dir /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static -use-static-resource-dir -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -resource-dir -Xcc /root/.swiftpm/swift-sdks/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm.artifactbundle/swift-6.4.x-DEVELOPMENT-SNAPSHOT-2026-09-04-a_wasm/wasm32-unknown-wasip1/swift.xctoolchain/usr/lib/swift_static/clang -Xcc -D_LIBCPP_HARDENING_MODE\=_LIBCPP_HARDENING_MODE_DEBUG -Xcc -fmodules-prune-interval\=86400 -Xcc -fmodules-prune-after\=345600 -Xcc -I/host/spi-builder-workspace/.build/out/Products/Debug-webassembly-wasm32/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/DerivedSources-normal/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/DerivedSources/wasm32 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name SwiftTUI -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/SwiftTUI_const_extract_protocols.json -in-process-plugin-server-path /usr/lib/swift/host/libSwiftInProcPluginServer.so -plugin-path /usr/lib/swift/host/plugins -plugin-path /usr/local/lib/swift/host/plugins -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Position.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Rect.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Layer.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/LayerDrawing.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Renderer.o -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Size.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Position.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Rect.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Layer.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/LayerDrawing.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Renderer.o -index-unit-output-path /SwiftTUI.build/Debug-webassembly-wasm32/SwiftTUI-t.build/Objects-normal/wasm32/Size.o -index-store-path /host/spi-builder-workspace/.build/out -index-system-modules
error: Build failed
BUILD FAILURE 6.4 wasm