Swift Package Index

Build Information

Failed to build Flow, reference 1.13.0 (b452ec), with Swift 6.4 for Linux on 21 Sep 2026 20:52:16 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/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:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 5.1.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/iZettle/Flow.git
Reference: 1.13.0
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/iZettle/Flow
 * tag               1.13.0     -> FETCH_HEAD
HEAD is now at b452ec9 Merge pull request #130 from iZettle/bump-ios-min-deployment-target
Cloned https://github.com/iZettle/Flow.git
Revision (git rev-parse @):
b452ec9f7f525d24d99d5c01ef5853ab28223d23
SUCCESS checkout https://github.com/iZettle/Flow.git at 1.13.0
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.4
Building package at path:  $PWD
https://github.com/iZettle/Flow.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-54344845-2":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.4-latest: Pulling from saguaro1/spi-images
Digest: sha256:c77fcce225e223ac0fafed844619173fc6de8d62dd560eeb28db3182af6a282b
Status: Image is up to date for registry.gitlab.com/saguaro1/spi-images:basic-6.4-latest
Building for debugging...
[Constructing description]
[Planning deferred tasks]
error: SwiftCompile normal x86_64 failed with a nonzero exit code. Command line:     cd /host

/host/spi-builder-workspace/Flow/Future+Additions.swift:334:46: error: cannot find type 'NSInteger' in scope
332 |     ///   However, passing a nil `delayBetweenRepeats` will repeat at once.
333 |     @discardableResult
334 |     func repeatAndCollect(repeatCount count: NSInteger, delayBetweenRepetitions delay: TimeInterval? = nil) -> Future<[Value]> {
    |                                              `- error: cannot find type 'NSInteger' in scope
335 |         let state = StateAndCallback(state: (count: count, result: [Value]()))
336 |
/host/spi-builder-workspace/Flow/Scheduler.swift:220:42: error: cannot convert value of type '@convention(c) (UnsafeMutableRawPointer) -> Void' to expected argument type '@convention(c) (UnsafeMutableRawPointer?) -> Void'
218 |         Unmanaged<ThreadState>.fromOpaque(state).release()
219 |     }
220 |     pthread_key_create(&_threadStateKey, cleanup)
    |                                          `- error: cannot convert value of type '@convention(c) (UnsafeMutableRawPointer) -> Void' to expected argument type '@convention(c) (UnsafeMutableRawPointer?) -> Void'
221 |     return _threadStateKey
222 | }()
/host/spi-builder-workspace/Flow/Signal+KeyValueObserving.swift:12:18: error: cannot find type '_KeyValueCodingAndObserving' in scope
10 |
11 | // https://github.com/apple/swift/blob/master/stdlib/public/SDK/Foundation/NSObject.swift
12 | public extension _KeyValueCodingAndObserving {
   |                  `- error: cannot find type '_KeyValueCodingAndObserving' in scope
13 |     /// Returns a signal observing the property at `keyPath` of `self` using key value observing (KVO).
14 |     func signal<T>(for keyPath: KeyPath<Self, T>) -> ReadSignal<T> {
/host/spi-builder-workspace/Flow/Signal+KeyValueObserving.swift:26:25: error: cannot find type '_KeyValueCodingAndObserving' in scope
24 | public extension CoreSignal where Kind == Read {
25 |     /// Creates a new instance observing the property at `keyPath` of `object` using key value observing (KVO).
26 |     convenience init<O: _KeyValueCodingAndObserving>(object: O, keyPath: KeyPath<O, Value>) {
   |                         `- error: cannot find type '_KeyValueCodingAndObserving' in scope
27 |         self.init(getValue: { object[keyPath: keyPath] }, options: .shared, onInternalEvent: { callback in
28 |             let token = object.observe(keyPath, options: .new) { _, _ in
/host/spi-builder-workspace/Flow/Signal+KeyValueObserving.swift:38:25: error: cannot find type '_KeyValueCodingAndObserving' in scope
36 | public extension CoreSignal where Kind == ReadWrite {
37 |     /// Creates a new instance observing the property at `keyPath` of `object` using key value observing (KVO).
38 |     convenience init<O: _KeyValueCodingAndObserving>(object: O, keyPath: WritableKeyPath<O, Value>) {
   |                         `- error: cannot find type '_KeyValueCodingAndObserving' in scope
39 |         var object = object
40 |         self.init(getValue: { object[keyPath: keyPath] },
/host/spi-builder-workspace/Flow/TargetActionable.swift:13:17: error: cannot find type 'Selector' in scope
11 | /// Whether the conforming object supports a single target and action.
12 | public protocol TargetActionable: AnyObject {
13 |     var action: Selector? { get set }
   |                 `- error: cannot find type 'Selector' in scope
14 |     var target: AnyObject? { get set }
15 | }
/host/spi-builder-workspace/Flow/TargetActionable.swift:57:33: error: cannot find type 'Selector' in scope
55 | // Helper class to setup target actions.
56 | final class TargetAction: NSObject {
57 |     public static let selector: Selector = #selector(TargetAction.flowOnAction)
   |                                 `- error: cannot find type 'Selector' in scope
58 |     fileprivate let callbacker = Callbacker<()>()
59 |
/host/spi-builder-workspace/Flow/TargetActionable.swift:57:44: error: '#selector' can only be used with the Objective-C runtime
55 | // Helper class to setup target actions.
56 | final class TargetAction: NSObject {
57 |     public static let selector: Selector = #selector(TargetAction.flowOnAction)
   |                                            `- error: '#selector' can only be used with the Objective-C runtime
58 |     fileprivate let callbacker = Callbacker<()>()
59 |
/host/spi-builder-workspace/Flow/TargetActionable.swift:64:6: error: Objective-C interoperability is disabled
62 |     }
63 |
64 |     @objc func flowOnAction() {
   |      `- error: Objective-C interoperability is disabled
65 |         callbacker.callAll()
66 |     }
Failed frontend command:
/usr/bin/swift-frontend -frontend -emit-module -experimental-skip-non-inlinable-function-bodies-without-types /host/spi-builder-workspace/Flow/Bridges/CancelBag.swift /host/spi-builder-workspace/Flow/Bridges/Disposable+Cancellable.swift /host/spi-builder-workspace/Flow/Bridges/Future+Combine.swift /host/spi-builder-workspace/Flow/Bridges/Publisher+Utilities.swift /host/spi-builder-workspace/Flow/Bridges/Signal+Combine.swift /host/spi-builder-workspace/Flow/Bridges/Signal+SwiftUI.swift /host/spi-builder-workspace/Flow/Callbacker.swift /host/spi-builder-workspace/Flow/CoreSignal.swift /host/spi-builder-workspace/Flow/Delegate.swift /host/spi-builder-workspace/Flow/Disposable.swift /host/spi-builder-workspace/Flow/Either.swift /host/spi-builder-workspace/Flow/Enablable.swift /host/spi-builder-workspace/Flow/Event.swift /host/spi-builder-workspace/Flow/EventType.swift /host/spi-builder-workspace/Flow/FiniteSignal.swift /host/spi-builder-workspace/Flow/Future+Additions.swift /host/spi-builder-workspace/Flow/Future+Combiners.swift /host/spi-builder-workspace/Flow/Future+Signal.swift /host/spi-builder-workspace/Flow/Future.swift /host/spi-builder-workspace/Flow/FutureQueue.swift /host/spi-builder-workspace/Flow/HasEventListeners.swift /host/spi-builder-workspace/Flow/Locking.swift /host/spi-builder-workspace/Flow/OrderedCallbacker.swift /host/spi-builder-workspace/Flow/ReadSignal.swift /host/spi-builder-workspace/Flow/ReadWriteSignal.swift /host/spi-builder-workspace/Flow/Recursive.swift /host/spi-builder-workspace/Flow/Result.swift /host/spi-builder-workspace/Flow/Scheduler.swift /host/spi-builder-workspace/Flow/Signal+Combiners.swift /host/spi-builder-workspace/Flow/Signal+Construction.swift /host/spi-builder-workspace/Flow/Signal+Debug.swift /host/spi-builder-workspace/Flow/Signal+KeyValueObserving.swift /host/spi-builder-workspace/Flow/Signal+Listeners.swift /host/spi-builder-workspace/Flow/Signal+Scheduling.swift /host/spi-builder-workspace/Flow/Signal+Transforms.swift /host/spi-builder-workspace/Flow/Signal+Utilities.swift /host/spi-builder-workspace/Flow/Signal.swift /host/spi-builder-workspace/Flow/SignalProvider.swift /host/spi-builder-workspace/Flow/TargetActionable.swift /host/spi-builder-workspace/Flow/UIControls+Extensions.swift /host/spi-builder-workspace/Flow/UIView+EditingMenu.swift /host/spi-builder-workspace/Flow/UIView+Signal.swift /host/spi-builder-workspace/Flow/Utilities.swift -target x86_64-unknown-linux-gnu -disable-objc-interop -I /host/spi-builder-workspace/.build/out/Products/Debug-linux-x86_64 -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 -enable-anonymous-context-mangled-names -file-compilation-dir /host -Xcc -fno-omit-frame-pointer -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-linux-x86_64/include -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/DerivedSources-normal/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/DerivedSources/x86_64 -Xcc -I/host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name Flow -const-gather-protocols-file /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Flow_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 -emit-module-doc-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Modules/Flow.swiftdoc -emit-module-source-info-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Modules/Flow.swiftsourceinfo -emit-objc-header-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Flow-Swift.h -serialize-diagnostics-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Flow-primary-emit-module.dia -emit-dependencies-path /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Flow-primary-emit-module.d -parse-as-library -o /host/spi-builder-workspace/.build/out/Intermediates.noindex/Flow.build/Debug-linux-x86_64/Flow-t.build/Objects-normal/x86_64/Modules/Flow.swiftmodule
error: Build failed
BUILD FAILURE 6.4 linux