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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 Gestalt with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 1

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.40.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/regexident/Gestalt.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/regexident/Gestalt
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 6469230 Bumped version to '2.1.1'
Cloned https://github.com/regexident/Gestalt.git
Revision (git rev-parse @):
6469230fb1b81ea449312a855b410425030b287e
SUCCESS checkout https://github.com/regexident/Gestalt.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/regexident/Gestalt.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202405261a swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-6F35C1178C84523A.txt
[3/7] Compiling Gestalt ThemeObserver.swift
[4/7] Compiling Gestalt Themeable.swift
/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
10 |
11 | /// Utility protocol for enabling Gestalt themes
12 | public protocol Themeable: class {
   |                            `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
13 |     associatedtype Theme: Gestalt.Theme
14 |
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
[5/7] Emitting module Gestalt
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
/Users/admin/builder/spi-builder-workspace/Gestalt/Themeable.swift:12:28: warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
10 |
11 | /// Utility protocol for enabling Gestalt themes
12 | public protocol Themeable: class {
   |                            `- warning: using 'class' keyword to define a class-constrained protocol is deprecated; use 'AnyObject' instead
13 |     associatedtype Theme: Gestalt.Theme
14 |
[6/7] Compiling Gestalt Gestalt.swift
[7/7] Compiling Gestalt ThemeManager.swift
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:23:23: warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    |                       |- warning: static property 'default' is not concurrency-safe because non-'Sendable' type 'ThemeManager' may have shared mutable state; this is an error in the Swift 6 language mode
    |                       |- note: annotate 'default' 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
 24 |
 25 |     /// Whether to apply themes with animation
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:239:40: warning: capture of 'observer' with non-sendable type 'ThemeObserver?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
237 |                 return
238 |             }
239 |             guard let strongObserver = observer else {
    |                                        `- warning: capture of 'observer' with non-sendable type 'ThemeObserver?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
240 |                 return
241 |             }
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeObserver.swift:11:16: note: class 'ThemeObserver' does not conform to the 'Sendable' protocol
 9 | #endif
10 |
11 | internal class ThemeObserver {
   |                `- note: class 'ThemeObserver' does not conform to the 'Sendable' protocol
12 |     private let closure: (Theme) -> ()
13 |
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: warning: capture of 'self' with non-sendable type 'ThemeManager?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
 19 |
 20 | /// Theme manager for assigning a theme
 21 | public class ThemeManager {
    |              `- note: class 'ThemeManager' does not conform to the 'Sendable' protocol
 22 |     /// The default ThemeManager
 23 |     public static let `default`: ThemeManager = .init()
    :
254 |     private func notify() {
255 |         DispatchQueue.main.async { [weak self] in
256 |             guard let strongSelf = self else {
    |                                    `- warning: capture of 'self' with non-sendable type 'ThemeManager?' in a `@Sendable` closure; this is an error in the Swift 6 language mode
257 |                 return
258 |             }
/Users/admin/builder/spi-builder-workspace/Gestalt/ThemeManager.swift:256:36: warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
254 |     private func notify() {
255 |         DispatchQueue.main.async { [weak self] in
256 |             guard let strongSelf = self else {
    |                                    |- warning: sending 'self' risks causing data races; this is an error in the Swift 6 language mode
    |                                    `- note: task-isolated 'self' is captured by a main actor-isolated closure. main actor-isolated uses in closure may race against later nonisolated uses
257 |                 return
258 |             }
Build complete! (22.57s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "Gestalt",
  "name" : "Gestalt",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Gestalt",
      "targets" : [
        "Gestalt"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "GestaltTests",
      "module_type" : "SwiftTarget",
      "name" : "GestaltTests",
      "path" : "GestaltTests",
      "sources" : [
        "GestaltTests.swift"
      ],
      "target_dependencies" : [
        "Gestalt"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Gestalt",
      "module_type" : "SwiftTarget",
      "name" : "Gestalt",
      "path" : "Gestalt",
      "product_memberships" : [
        "Gestalt"
      ],
      "sources" : [
        "Gestalt.swift",
        "ThemeManager.swift",
        "ThemeObserver.swift",
        "Themeable.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.2"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.