Swift Package Index

Build Information

Failed to build MasonryStack, reference 0.1.0 (d09017), with Swift 6.4 for macOS (SPM) on 19 Sep 2026 16:50:22 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/lukepistrol/MasonryStack.git
Reference: 0.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/lukepistrol/MasonryStack
 * tag               0.1.0      -> FETCH_HEAD
HEAD is now at d090171 make stacks public
Cloned https://github.com/lukepistrol/MasonryStack.git
Revision (git rev-parse @):
d0901713a72febe9bee7b8db5af6fb5d63362ab8
SUCCESS checkout https://github.com/lukepistrol/MasonryStack.git at 0.1.0
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.4
Building package at path:  $PWD
https://github.com/lukepistrol/MasonryStack.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/MasonryStack/MasonryHStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryHStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var rows: Int
   :
18 |     }
19 |
20 |     public func sizeThatFits(
   |                 `- note: add '@available' attribute to enclosing instance method
21 |         proposal: ProposedViewSize,
   |                   `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
22 |         subviews: Subviews,
23 |         cache: inout ()
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryHStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var rows: Int
   :
26 |     }
27 |
28 |     public func placeSubviews(
   |                 `- note: add '@available' attribute to enclosing instance method
29 |         in bounds: CGRect,
30 |         proposal: ProposedViewSize,
   |                   `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
31 |         subviews: Subviews,
32 |         cache: inout ()
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryHStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var rows: Int
   :
36 |
37 |     @discardableResult
38 |     private func calculateSize(
   |                  `- note: add '@available' attribute to enclosing instance method
39 |         for subviews: Subviews,
40 |         in proposal: ProposedViewSize,
   |                      `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
41 |         placeInBounds bounds: CGRect? = nil
42 |     ) -> CGSize {
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryHStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryHStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var rows: Int
   :
79 |     }
80 |
81 |     public static var layoutProperties: LayoutProperties {
   |                       |                 `- error: 'LayoutProperties' is only available in macOS 13.0 or newer
   |                       `- note: add '@available' attribute to enclosing static property
82 |         var properties = LayoutProperties()
83 |         properties.stackOrientation = .horizontal
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:21:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryVStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var columns: Int
   :
18 |     }
19 |
20 |     public func sizeThatFits(
   |                 `- note: add '@available' attribute to enclosing instance method
21 |         proposal: ProposedViewSize,
   |                   `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
22 |         subviews: Subviews,
23 |         cache: inout ()
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:30:19: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryVStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var columns: Int
   :
26 |     }
27 |
28 |     public func placeSubviews(
   |                 `- note: add '@available' attribute to enclosing instance method
29 |         in bounds: CGRect,
30 |         proposal: ProposedViewSize,
   |                   `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
31 |         subviews: Subviews,
32 |         cache: inout ()
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:40:22: error: 'ProposedViewSize' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryVStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var columns: Int
   :
36 |
37 |     @discardableResult
38 |     private func calculateSize(
   |                  `- note: add '@available' attribute to enclosing instance method
39 |         for subviews: Subviews,
40 |         in proposal: ProposedViewSize,
   |                      `- error: 'ProposedViewSize' is only available in macOS 13.0 or newer
41 |         placeInBounds bounds: CGRect? = nil
42 |     ) -> CGSize {
/Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.swift:81:41: error: 'LayoutProperties' is only available in macOS 13.0 or newer
 8 | import SwiftUI
 9 |
10 | public struct MasonryVStack: Layout {
   |               `- note: add '@available' attribute to enclosing struct
11 |
12 |     private var columns: Int
   :
79 |     }
80 |
81 |     public static var layoutProperties: LayoutProperties {
   |                       |                 `- error: 'LayoutProperties' is only available in macOS 13.0 or newer
   |                       `- note: add '@available' attribute to enclosing static property
82 |         var properties = LayoutProperties()
83 |         properties.stackOrientation = .vertical
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/MasonryStack/MasonryHStack.swift /Users/admin/builder/spi-builder-workspace/Sources/MasonryStack/MasonryVStack.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/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack-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/MasonryStack.build/Debug/MasonryStack-t.build/DerivedSources-normal/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/DerivedSources/arm64 -Xcc -I/Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/DerivedSources -Xcc -DSWIFT_PACKAGE -Xcc -DDEBUG\=1 -no-auto-bridging-header-chaining -module-name MasonryStack -const-gather-protocols-file /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack_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/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack.swiftdoc -emit-module-source-info-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack.swiftsourceinfo -emit-objc-header-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack-Swift.h -serialize-diagnostics-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack-primary-emit-module.dia -emit-dependencies-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack-primary-emit-module.d -parse-as-library -o /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack.swiftmodule -emit-abi-descriptor-path /Users/admin/builder/spi-builder-workspace/.build/out/Intermediates.noindex/MasonryStack.build/Debug/MasonryStack-t.build/Objects-normal/arm64/MasonryStack.abi.json
error: Build failed
BUILD FAILURE 6.4 macosSpm