Swift Package Index

Build Information

Failed to build Axt, reference master (23a8a9), with Swift 6.4 for macOS (SPM) on 18 Sep 2026 19:14:43 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
========================================
Clone URL: https://github.com/soundcloud/Axt.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/soundcloud/Axt
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 23a8a92 Update README.md
Cloned https://github.com/soundcloud/Axt.git
Revision (git rev-parse @):
23a8a92bd77ac9865f8d38f23f07f3ed42ce4da9
SUCCESS checkout https://github.com/soundcloud/Axt.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/soundcloud/Axt.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-27.0.0-Release.Candidate.app xcrun swift build --arch arm64
Building for debugging...
[Planning deferred tasks]
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[20 / 29] Axt
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[97 / 106] Axt
error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/Sources/Axt/AxtTest/AxtTest.swift:7:25: error: cannot find type 'UIWindow' in scope
 5 |
 6 | public final class AxtTest {
 7 |     private var window: UIWindow!
   |                         `- error: cannot find type 'UIWindow' in scope
 8 |     public private(set) var hostingController: UIViewController!
 9 |
/Users/admin/builder/spi-builder-workspace/Sources/Axt/AxtTest/AxtTest.swift:8:48: error: cannot find type 'UIViewController' in scope
 6 | public final class AxtTest {
 7 |     private var window: UIWindow!
 8 |     public private(set) var hostingController: UIViewController!
   |                                                `- error: cannot find type 'UIViewController' in scope
 9 |
10 |     public internal(set) static var sheets: [UUID: AxtTest] = [:]
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:24:59: error: cannot find type 'UIViewController' in scope
22 |     }
23 |
24 |     public func makeUIViewController(context: Context) -> UIViewController {
   |                                                           `- error: cannot find type 'UIViewController' in scope
25 |         let test = AxtTest(content)
26 |         AxtTest.sheets[context.coordinator.id] = test
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:24:47: error: cannot find type 'Context' in scope
22 |     }
23 |
24 |     public func makeUIViewController(context: Context) -> UIViewController {
   |                                               `- error: cannot find type 'Context' in scope
25 |         let test = AxtTest(content)
26 |         AxtTest.sheets[context.coordinator.id] = test
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:30:43: error: cannot find type 'UIViewController' in scope
28 |     }
29 |
30 |     public func updateUIViewController(_: UIViewController, context: Context) {
   |                                           `- error: cannot find type 'UIViewController' in scope
31 |         let test = AxtTest.sheets[context.coordinator.id]
32 |         (test?.hostingController as? UIHostingController<Content>)?.rootView = content
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:30:70: error: cannot find type 'Context' in scope
28 |     }
29 |
30 |     public func updateUIViewController(_: UIViewController, context: Context) {
   |                                                                      `- error: cannot find type 'Context' in scope
31 |         let test = AxtTest.sheets[context.coordinator.id]
32 |         (test?.hostingController as? UIHostingController<Content>)?.rootView = content
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:35:53: error: cannot find type 'UIViewController' in scope
33 |     }
34 |
35 |     public static func dismantleUIViewController(_: UIViewController, coordinator: Coordinator) {
   |                                                     `- error: cannot find type 'UIViewController' in scope
36 |         AxtTest.sheets.removeValue(forKey: coordinator.id)
37 |     }
/Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift:17:33: error: cannot find type 'UIViewControllerRepresentable' in scope
15 | #if TESTABLE
16 |
17 | struct AxtSheet<Content: View>: UIViewControllerRepresentable {
   |                                 `- error: cannot find type 'UIViewControllerRepresentable' in scope
18 |     let content: Content
19 |
Failed frontend command:
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/Users/admin/builder/spi-builder-workspace/Sources/Axt/AxtTest/printHierarchy.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/AxtView.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Modifier.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Native/Button.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Native/NavigationLink.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Native/Text.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Native/TextField.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/Native/Toggle.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/NativeView.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/View+testData.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/View+testId.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/dig.swift /Users/admin/builder/spi-builder-workspace/Sources/Axt/hostAxtSheet.swift -target arm64-apple-macos12.0 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/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libPreviewsMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#PreviewsMacros -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 -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libSwiftUIMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#SwiftUIMacros -disable-implicit-swift-modules -Xcc 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-emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/Axt.build/Debug/Axt-t.build/Objects-normal/arm64/Axt.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm