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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Successful build of CustomTabView, reference v1.1.0 (622dfe), with Swift 6.0 for macOS (SPM) on 19 Jan 2025 18:21:16 UTC.

Swift 6 data race errors: 2

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/NicFontana/SwiftUI-CustomTabView.git
Reference: v1.1.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/NicFontana/SwiftUI-CustomTabView
 * tag               v1.1.0     -> FETCH_HEAD
HEAD is now at 622dfef Merge pull request #7 from NicFontana/feat/support-ios-18-swiftui-containers
Cloned https://github.com/NicFontana/SwiftUI-CustomTabView.git
Revision (git rev-parse @):
622dfef343c3840a6c0545e61576ba3fa4424b66
SUCCESS checkout https://github.com/NicFontana/SwiftUI-CustomTabView.git at v1.1.0
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "dependencies": [
    {
      "identity": "swiftui-customtabview",
      "name": "CustomTabView",
      "url": "https://github.com/NicFontana/SwiftUI-CustomTabView.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/SwiftUI-CustomTabView",
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/NicFontana/SwiftUI-CustomTabView.git
[1/127] Fetching swiftui-customtabview
Fetched https://github.com/NicFontana/SwiftUI-CustomTabView.git from cache (1.10s)
Creating working copy for https://github.com/NicFontana/SwiftUI-CustomTabView.git
Working copy of https://github.com/NicFontana/SwiftUI-CustomTabView.git resolved at v1.1.0 (622dfef)
warning: '.resolve-product-dependencies': dependency 'swiftui-customtabview' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/NicFontana/SwiftUI-CustomTabView.git
https://github.com/NicFontana/SwiftUI-CustomTabView.git
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CustomTabView",
  "name" : "CustomTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CustomTabView",
      "targets" : [
        "CustomTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CustomTabViewTests",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabViewTests",
      "path" : "Tests/CustomTabViewTests",
      "sources" : [
        "CustomTabViewTests.swift"
      ],
      "target_dependencies" : [
        "CustomTabView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CustomTabView",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabView",
      "path" : "Sources/CustomTabView",
      "product_memberships" : [
        "CustomTabView"
      ],
      "sources" : [
        "CustomTabView.swift",
        "EnvironmentValues+TabBarPosition.swift",
        "Example/BottomFloatingTabBarView.swift",
        "Example/ExampleView.swift",
        "Example/Tab.swift",
        "Example/TopIndicatorTabBarView.swift",
        "iOS/KeyboardReadable.swift",
        "iOS/UITabBarControllerRepresentable.swift",
        "macOS/NSTabBarControllerRepresentable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-5BDAB9E9C0126B9D.txt
[3/12] Compiling CustomTabView UITabBarControllerRepresentable.swift
[4/12] Compiling CustomTabView KeyboardReadable.swift
[5/12] Compiling CustomTabView Tab.swift
[6/12] Compiling CustomTabView BottomFloatingTabBarView.swift
[7/12] Compiling CustomTabView TopIndicatorTabBarView.swift
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/Example/TopIndicatorTabBarView.swift:83:16: warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 81 |
 82 | struct SizePreferenceKey: PreferenceKey {
 83 |     static var defaultValue: CGSize = .zero
    |                |- warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'defaultValue' with '@MainActor' if property should only be accessed from the main actor
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 84 |     static func reduce(value: inout CGSize, nextValue: () -> CGSize) {}
 85 | }
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/Example/TopIndicatorTabBarView.swift:95:62: warning: passing non-sendable parameter 'onChange' to function expecting a @Sendable closure
 86 |
 87 | extension View {
 88 |     func readSize(onChange: @escaping (CGSize) -> Void) -> some View {
    |                   `- note: parameter 'onChange' is implicitly non-sendable
 89 |         background(
 90 |             GeometryReader { geometryProxy in
    :
 93 |             }
 94 |         )
 95 |         .onPreferenceChange(SizePreferenceKey.self, perform: onChange)
    |                                                              `- warning: passing non-sendable parameter 'onChange' to function expecting a @Sendable closure
 96 |     }
 97 | }
[8/12] Compiling CustomTabView CustomTabView.swift
[9/12] Emitting module CustomTabView
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/EnvironmentValues+TabBarPosition.swift:24:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// An enumaration that is used to set the tab bar view position.
11 | public enum TabBarPosition {
   |             `- note: consider making enum 'TabBarPosition' conform to the 'Sendable' protocol
12 |     /// Puts the tab bar next to the content, at one edge of the scene.
13 |     ///
   :
22 |
23 | private struct TabBarPositionEnvironmentKey: EnvironmentKey {
24 |     static let defaultValue: TabBarPosition = .edge(.bottom)
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: annotate 'defaultValue' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
25 | }
26 |
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/Example/TopIndicatorTabBarView.swift:83:16: warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
 81 |
 82 | struct SizePreferenceKey: PreferenceKey {
 83 |     static var defaultValue: CGSize = .zero
    |                |- warning: static property 'defaultValue' is not concurrency-safe because it is nonisolated global shared mutable state; this is an error in the Swift 6 language mode
    |                |- note: convert 'defaultValue' to a 'let' constant to make 'Sendable' shared state immutable
    |                |- note: annotate 'defaultValue' with '@MainActor' if property should only be accessed from the main actor
    |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
 84 |     static func reduce(value: inout CGSize, nextValue: () -> CGSize) {}
 85 | }
[10/12] Compiling CustomTabView ExampleView.swift
[11/12] Compiling CustomTabView EnvironmentValues+TabBarPosition.swift
/Users/admin/builder/spi-builder-workspace/Sources/CustomTabView/EnvironmentValues+TabBarPosition.swift:24:16: warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
 9 |
10 | /// An enumaration that is used to set the tab bar view position.
11 | public enum TabBarPosition {
   |             `- note: consider making enum 'TabBarPosition' conform to the 'Sendable' protocol
12 |     /// Puts the tab bar next to the content, at one edge of the scene.
13 |     ///
   :
22 |
23 | private struct TabBarPositionEnvironmentKey: EnvironmentKey {
24 |     static let defaultValue: TabBarPosition = .edge(.bottom)
   |                |- warning: static property 'defaultValue' is not concurrency-safe because non-'Sendable' type 'TabBarPosition' may have shared mutable state; this is an error in the Swift 6 language mode
   |                |- note: annotate 'defaultValue' with '@MainActor' if property should only be accessed from the main actor
   |                `- note: disable concurrency-safety checks if accesses are protected by an external synchronization mechanism
25 | }
26 |
[12/12] Compiling CustomTabView NSTabBarControllerRepresentable.swift
Build complete! (17.04s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "CustomTabView",
  "name" : "CustomTabView",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "ios",
      "version" : "13.0"
    },
    {
      "name" : "macos",
      "version" : "10.15"
    }
  ],
  "products" : [
    {
      "name" : "CustomTabView",
      "targets" : [
        "CustomTabView"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "CustomTabViewTests",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabViewTests",
      "path" : "Tests/CustomTabViewTests",
      "sources" : [
        "CustomTabViewTests.swift"
      ],
      "target_dependencies" : [
        "CustomTabView"
      ],
      "type" : "test"
    },
    {
      "c99name" : "CustomTabView",
      "module_type" : "SwiftTarget",
      "name" : "CustomTabView",
      "path" : "Sources/CustomTabView",
      "product_memberships" : [
        "CustomTabView"
      ],
      "sources" : [
        "CustomTabView.swift",
        "EnvironmentValues+TabBarPosition.swift",
        "Example/BottomFloatingTabBarView.swift",
        "Example/ExampleView.swift",
        "Example/Tab.swift",
        "Example/TopIndicatorTabBarView.swift",
        "iOS/KeyboardReadable.swift",
        "iOS/UITabBarControllerRepresentable.swift",
        "macOS/NSTabBarControllerRepresentable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.