Swift Package Index

Build Information

Failed to build swift-cross-ui, reference main (1a887c), with Swift 6.3 for watchOS using Xcode 26.4 on 16 Apr 2026 04:17:50 UTC.

Build Command

No build command. This typically means the build failed at an early stage where we determine the build command.

Build Log

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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/wabiverse/swift-cross-ui.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/wabiverse/swift-cross-ui
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 1a887c2 appkit: mark makeCoordinator with MainActor. * The appropriate method that should NOT have a main actor is   determineViewSize, since that will break compiling with swift 6   strict concurrency.
Cloned https://github.com/wabiverse/swift-cross-ui.git
Revision (git rev-parse @):
1a887c25d505e9ea4c2cc90bae71196d31645b57
SPI manifest file found: $PWD/.spi.yml
SUCCESS checkout https://github.com/wabiverse/swift-cross-ui.git at main
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Build
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Selected platform:         watchOS
Swift version:             6.3
Building package at path:  $PWD
https://github.com/wabiverse/swift-cross-ui.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/wabiverse/swift-windowsappsdk
Fetching from https://github.com/thebrowsercompany/swift-windowsfoundation
package 'swift-windowsfoundation' is required using a revision-based requirement and it depends on local package 'swift-cwinrt', which is not supportedfailed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gtk4 using your system-packager:
    brew install gtk4
you may be able to install gtk+-3.0 using your system-packager:
    brew install gtk+3
Resolve Package Graph
Updating from https://github.com/wabiverse/swift-windowsappsdk
Updating from https://github.com/thebrowsercompany/swift-windowsfoundation
package 'swift-windowsfoundation' is required using a revision-based requirement and it depends on local package 'swift-cwinrt', which is not supportedyou may be able to install gtk4 using your system-packager:
    brew install gtk4
you may be able to install gtk+-3.0 using your system-packager:
    brew install gtk+3
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-16 00:17:47.809 xcodebuild[529:3068] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-16-04_00-17-0047.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'swift-windowsfoundation' is required using a revision-based requirement and it depends on local package 'swift-cwinrt', which is not supported
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
Updating from https://github.com/wabiverse/swift-windowsappsdk
Updating from https://github.com/thebrowsercompany/swift-windowsfoundation
package 'swift-windowsfoundation' is required using a revision-based requirement and it depends on local package 'swift-cwinrt', which is not supportedfailed to retrieve search paths with pkg-config; maybe pkg-config is not installedyou may be able to install gtk4 using your system-packager:
    brew install gtk4
you may be able to install gtk+-3.0 using your system-packager:
    brew install gtk+3
Resolved source packages:
  spi-builder-workspace: (null)
2026-04-16 00:17:50.431 xcodebuild[652:3873] Writing error result bundle to /var/folders/xq/y_g06wb113726d38xsyx71_h0000gn/T/ResultBundle_2026-16-04_00-17-0050.xcresult
xcodebuild: error: Could not resolve package dependencies:
  package 'swift-windowsfoundation' is required using a revision-based requirement and it depends on local package 'swift-cwinrt', which is not supported
BUILD FAILURE 6.3 watchOS