Test repository for the Ready for Swift 6 project

Run a build with a particular toolchain:

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202404221a swift build

This will run the build in language mode 5 and not show any concurrency warnings.

In order to show concurrency warnings, run

env DEVELOPER_DIR=/Applications/Xcode-15.3.0.app xcrun --toolchain org.swift.600202404221a swift build -Xswiftc -strict-concurrency=complete

In order to run in Swift 6 language mode, add swiftLanguageVersions: [.version("6")] to the Package.swift manifest (see branch language-mode-6):

let package = Package(
    name: "ReadyForSwift6Test",
    products: [
        .library(name: "ReadyForSwift6Test", targets: ["ReadyForSwift6Test"]),
    ],
    targets: [
        .target(name: "ReadyForSwift6Test"),
    ],
    swiftLanguageVersions: [.version("6")]
)

This will raise concurrency errors instead of warnings.

There does not seem to be a way to run in Swift 6 language mode without modifying the package manifest.