HeadlessTabView – Build Information

Build Information

Failed to build HeadlessTabView, reference master (c8f6e4), with Swift 6.4 for macOS (SPM) on 18 Sep 2026 15:33:55 UTC.

Build Command

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

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/davidask/HeadlessTabView.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/davidask/HeadlessTabView
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at c8f6e43 Add guard for swapping view controllers, rename generic type
Cloned https://github.com/davidask/HeadlessTabView.git
Revision (git rev-parse @):
c8f6e4399ce65d231231a22d2733a8009c5950be
SUCCESS checkout https://github.com/davidask/HeadlessTabView.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/davidask/HeadlessTabView.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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error: SwiftCompile normal arm64 failed with a nonzero exit code. Command line:     cd /Users/admin/builder

/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:43:34: [1;31merror: [1;39mcannot find type 'UIViewControllerRepresentable' in scope[0;0m
 [0;36m41 |[0;0m }
 [0;36m42 |[0;0m
 [0;36m43 |[0;0m extension HeadlessTabView.Inner: [4;39mUIViewControllerRepresentable[0;0m {
    [0;36m|[0;0m                                  `- [1;31merror: [1;39mcannot find type 'UIViewControllerRepresentable' in scope[0;0m
 [0;36m44 |[0;0m
 [0;36m45 |[0;0m     func makeUIViewController(context: Context) -> HeadlessTabView.Controller {
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:45:40: [1;31merror: [1;39mcannot find type 'Context' in scope[0;0m
 [0;36m43 |[0;0m extension HeadlessTabView.Inner: UIViewControllerRepresentable {
 [0;36m44 |[0;0m
 [0;36m45 |[0;0m     func makeUIViewController(context: [4;39mContext[0;0m) -> HeadlessTabView.Controller {
    [0;36m|[0;0m                                        `- [1;31merror: [1;39mcannot find type 'Context' in scope[0;0m
 [0;36m46 |[0;0m         HeadlessTabView.Controller(nibName: nil, bundle: nil)
 [0;36m47 |[0;0m     }
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:49:90: [1;31merror: [1;39mcannot find type 'Context' in scope[0;0m
 [0;36m47 |[0;0m     }
 [0;36m48 |[0;0m
 [0;36m49 |[0;0m     func updateUIViewController(_ uiViewController: HeadlessTabView.Controller, context: [4;39mContext[0;0m) {
    [0;36m|[0;0m                                                                                          `- [1;31merror: [1;39mcannot find type 'Context' in scope[0;0m
 [0;36m50 |[0;0m
 [0;36m51 |[0;0m         guard context.coordinator.currentSelection != selection else {
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:87:41: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
 [0;36m85 |[0;0m
 [0;36m86 |[0;0m extension HeadlessTabView {
 [0;36m87 |[0;0m     fileprivate final class Controller: [4;39mUIViewController[0;0m {
    [0;36m|[0;0m                                         `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
 [0;36m88 |[0;0m
 [0;36m89 |[0;0m         var passedEdgeInsets: UIEdgeInsets?
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:89:31: [1;31merror: [1;39mcannot find type 'UIEdgeInsets' in scope[0;0m
 [0;36m87 |[0;0m     fileprivate final class Controller: UIViewController {
 [0;36m88 |[0;0m
 [0;36m89 |[0;0m         var passedEdgeInsets: [4;39mUIEdgeInsets[0;0m?
    [0;36m|[0;0m                               `- [1;31merror: [1;39mcannot find type 'UIEdgeInsets' in scope[0;0m
 [0;36m90 |[0;0m
 [0;36m91 |[0;0m         override func loadView() {
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:91:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
 [0;36m89 |[0;0m         var passedEdgeInsets: UIEdgeInsets?
 [0;36m90 |[0;0m
 [0;36m91 |[0;0m         [4;39moverride[0;0m func loadView() {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
 [0;36m92 |[0;0m             view = UIView()
 [0;36m93 |[0;0m             view.backgroundColor = .clear
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:96:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
 [0;36m94 |[0;0m         }
 [0;36m95 |[0;0m
 [0;36m96 |[0;0m         [4;39moverride[0;0m func viewWillLayoutSubviews() {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
 [0;36m97 |[0;0m             super.viewWillLayoutSubviews()
 [0;36m98 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:114:28: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m112 |[0;0m         }
[0;36m113 |[0;0m
[0;36m114 |[0;0m         var selectedChild: [4;39mUIViewController[0;0m? {
    [0;36m|[0;0m                            `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m115 |[0;0m             willSet {
[0;36m116 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:23: [1;31merror: [1;39mcannot find 'isViewLoaded' in scope[0;0m
[0;36m132 |[0;0m             }
[0;36m133 |[0;0m             didSet {
[0;36m134 |[0;0m                 guard [4;39misViewLoaded[0;0m && view.superview != nil else {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mcannot find 'isViewLoaded' in scope[0;0m
[0;36m135 |[0;0m                     return
[0;36m136 |[0;0m                 }
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:134:39: [1;31merror: [1;39mcannot find 'view' in scope[0;0m
[0;36m132 |[0;0m             }
[0;36m133 |[0;0m             didSet {
[0;36m134 |[0;0m                 guard isViewLoaded && [4;39mview[0;0m.superview != nil else {
    [0;36m|[0;0m                                       `- [1;31merror: [1;39mcannot find 'view' in scope[0;0m
[0;36m135 |[0;0m                     return
[0;36m136 |[0;0m                 }
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:139:31: [1;31merror: [1;39mcannot find 'children' in scope[0;0m
[0;36m137 |[0;0m
[0;36m138 |[0;0m                 didRemove(
[0;36m139 |[0;0m                     children: [4;39mchildren[0;0m.filter({ child in
    [0;36m|[0;0m                               `- [1;31merror: [1;39mcannot find 'children' in scope[0;0m
[0;36m140 |[0;0m                         child != selectedChild
[0;36m141 |[0;0m                     })
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:217:43: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m215 |[0;0m         }
[0;36m216 |[0;0m
[0;36m217 |[0;0m         private func didRemove(children: [[4;39mUIViewController[0;0m]) {
    [0;36m|[0;0m                                           `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m218 |[0;0m             for child in children {
[0;36m219 |[0;0m                 child.view.removeFromSuperview()
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:207:36: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m205 |[0;0m         }
[0;36m206 |[0;0m
[0;36m207 |[0;0m         private func didAdd(child: [4;39mUIViewController[0;0m) {
    [0;36m|[0;0m                                    `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m208 |[0;0m             child.didMove(toParent: self)
[0;36m209 |[0;0m         }
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:152:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m150 |[0;0m         }
[0;36m151 |[0;0m
[0;36m152 |[0;0m         [4;39moverride[0;0m func viewWillAppear(_ animated: Bool) {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m153 |[0;0m             super.viewWillAppear(animated)
[0;36m154 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:162:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m160 |[0;0m         }
[0;36m161 |[0;0m
[0;36m162 |[0;0m         [4;39moverride[0;0m func viewDidAppear(_ animated: Bool) {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m163 |[0;0m             super.viewDidAppear(animated)
[0;36m164 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:172:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m170 |[0;0m         }
[0;36m171 |[0;0m
[0;36m172 |[0;0m         [4;39moverride[0;0m func viewWillDisappear(_ animated: Bool) {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m173 |[0;0m             super.viewWillDisappear(animated)
[0;36m174 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:178:23: [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m176 |[0;0m         }
[0;36m177 |[0;0m
[0;36m178 |[0;0m         [4;39moverride[0;0m func viewDidDisappear(_ animated: Bool) {
    [0;36m|[0;0m                       `- [1;31merror: [1;39mmethod does not override any method from its superclass[0;0m
[0;36m179 |[0;0m             super.viewDidDisappear(animated)
[0;36m180 |[0;0m
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:184:49: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m182 |[0;0m         }
[0;36m183 |[0;0m
[0;36m184 |[0;0m         override func willMove(toParent parent: [4;39mUIViewController[0;0m?) {
    [0;36m|[0;0m                                                 `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m185 |[0;0m             super.willMove(toParent: parent)
[0;36m186 |[0;0m         }
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:190:37: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m188 |[0;0m         // MARK: - Convenience
[0;36m189 |[0;0m
[0;36m190 |[0;0m         private func willAdd(child: [4;39mUIViewController[0;0m) {
    [0;36m|[0;0m                                     `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m191 |[0;0m
[0;36m192 |[0;0m             addChild(child)
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:211:44: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m209 |[0;0m         }
[0;36m210 |[0;0m
[0;36m211 |[0;0m         private func willRemove(children: [[4;39mUIViewController[0;0m]) {
    [0;36m|[0;0m                                            `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m212 |[0;0m             for child in children {
[0;36m213 |[0;0m                 child.willMove(toParent: nil)
/Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift:228:42: [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m226 |[0;0m extension HeadlessTabView {
[0;36m227 |[0;0m     fileprivate class Coordinator {
[0;36m228 |[0;0m         var storedViewControllers: [Tab: [4;39mUIViewController[0;0m] = [:]
    [0;36m|[0;0m                                          `- [1;31merror: [1;39mcannot find type 'UIViewController' in scope[0;0m
[0;36m229 |[0;0m         var currentSelection: Tab?
[0;36m230 |[0;0m     }
Failed frontend command:
/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /Users/admin/builder/spi-builder-workspace/Sources/HeadlessTabView/HeadlessTabView.swift -target arm64-apple-macos12.0 -disable-cross-import-overlay-search -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libFoundationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#FoundationMacros -load-resolved-plugin /Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins/libObservationMacros.dylib\#/Applications/Xcode-27.0.0-Release.Candidate.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server\#ObservationMacros -load-resolved-plugin /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 -fno-implicit-modules -Xcc -fno-implicit-module-maps -explicit-swift-module-map-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView-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 -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\=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 -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/HeadlessTabView.build/Debug/HeadlessTabView-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name HeadlessTabView -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView_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 -emit-module-doc-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/HeadlessTabView.build/Debug/HeadlessTabView-t.build/Objects-normal/arm64/HeadlessTabView.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm