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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 PianoRoll with Swift 6.0 for macOS (SPM).

Swift 6 data race errors: 2

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/AudioKit/PianoRoll.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/AudioKit/PianoRoll
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at fa7d51e Cleanup: Use binding with ForEach
Cloned https://github.com/AudioKit/PianoRoll.git
Revision (git rev-parse @):
fa7d51e1826f4877bc7f37c57d58fd21d3bc8dd7
SPI manifest file found: $workDir/.spi.yml
SUCCESS checkout https://github.com/AudioKit/PianoRoll.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $workDir
https://github.com/AudioKit/PianoRoll.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
[3/10] Compiling PianoRoll VerticalPianoRollNoteView.swift
[4/10] Compiling PianoRoll PreferenceKeys.swift
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PreferenceKeys.swift:5:23: warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 3 | /// For accumulating note view offsets.
 4 | public struct NoteOffsetsKey: PreferenceKey {
 5 |     public static var defaultValue: [NoteOffsetInfo] = []
   |                       |- warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated 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
 6 |
 7 |     public static func reduce(value: inout [NoteOffsetInfo], nextValue: () -> [NoteOffsetInfo]) {
[5/10] Compiling PianoRoll PianoRollModel.swift
[6/10] Compiling PianoRoll PianoRollNoteView.swift
[7/10] Compiling PianoRoll PianoRollNote.swift
[8/10] Emitting module PianoRoll
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PianoRollGrid.swift:13:9: warning: stored property 'layout' of 'Sendable'-conforming struct 'PianoRollGrid' has non-sendable type 'PianoRoll.Layout'; this is an error in the Swift 6 language mode
11 |     var length: Int
12 |     var height: Int
13 |     var layout: PianoRoll.Layout
   |         `- warning: stored property 'layout' of 'Sendable'-conforming struct 'PianoRollGrid' has non-sendable type 'PianoRoll.Layout'; this is an error in the Swift 6 language mode
14 |
15 |     func path(in rect: CGRect) -> Path {
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PianoRoll.swift:9:17: note: consider making enum 'Layout' conform to the 'Sendable' protocol
  7 | /// Note: Requires macOS 12 / iOS 15 due to SwiftUI bug (crashes in SwiftUI when deleting notes).
  8 | public struct PianoRoll: View {
  9 |     public enum Layout {
    |                 `- note: consider making enum 'Layout' conform to the 'Sendable' protocol
 10 |         case horizontal
 11 |         case vertical
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PreferenceKeys.swift:5:23: warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated global shared mutable state; this is an error in the Swift 6 language mode
 3 | /// For accumulating note view offsets.
 4 | public struct NoteOffsetsKey: PreferenceKey {
 5 |     public static var defaultValue: [NoteOffsetInfo] = []
   |                       |- warning: static property 'defaultValue' is not concurrency-safe because it is non-isolated 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
 6 |
 7 |     public static func reduce(value: inout [NoteOffsetInfo], nextValue: () -> [NoteOffsetInfo]) {
[9/10] Compiling PianoRoll PianoRoll.swift
[10/10] Compiling PianoRoll PianoRollGrid.swift
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PianoRollGrid.swift:13:9: warning: stored property 'layout' of 'Sendable'-conforming struct 'PianoRollGrid' has non-sendable type 'PianoRoll.Layout'; this is an error in the Swift 6 language mode
11 |     var length: Int
12 |     var height: Int
13 |     var layout: PianoRoll.Layout
   |         `- warning: stored property 'layout' of 'Sendable'-conforming struct 'PianoRollGrid' has non-sendable type 'PianoRoll.Layout'; this is an error in the Swift 6 language mode
14 |
15 |     func path(in rect: CGRect) -> Path {
/Users/admin/builder/spi-builder-workspace/Sources/PianoRoll/PianoRoll.swift:9:17: note: consider making enum 'Layout' conform to the 'Sendable' protocol
  7 | /// Note: Requires macOS 12 / iOS 15 due to SwiftUI bug (crashes in SwiftUI when deleting notes).
  8 | public struct PianoRoll: View {
  9 |     public enum Layout {
    |                 `- note: consider making enum 'Layout' conform to the 'Sendable' protocol
 10 |         case horizontal
 11 |         case vertical
Build complete! (35.02s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "PianoRoll",
  "name" : "PianoRoll",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
    {
      "name" : "macos",
      "version" : "12.0"
    },
    {
      "name" : "ios",
      "version" : "15.0"
    }
  ],
  "products" : [
    {
      "name" : "PianoRoll",
      "targets" : [
        "PianoRoll"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "PianoRollTests",
      "module_type" : "SwiftTarget",
      "name" : "PianoRollTests",
      "path" : "Tests/PianoRollTests",
      "sources" : [
        "PianoRollTests.swift"
      ],
      "target_dependencies" : [
        "PianoRoll"
      ],
      "type" : "test"
    },
    {
      "c99name" : "PianoRoll",
      "module_type" : "SwiftTarget",
      "name" : "PianoRoll",
      "path" : "Sources/PianoRoll",
      "product_memberships" : [
        "PianoRoll"
      ],
      "sources" : [
        "PianoRoll.swift",
        "PianoRollGrid.swift",
        "PianoRollModel.swift",
        "PianoRollNote.swift",
        "PianoRollNoteView.swift",
        "PreferenceKeys.swift",
        "VerticalPianoRollNoteView.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.5"
}
Done.
This is a staging environment. For live and up-to-date package information, visit swiftpackageindex.com.