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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

Failed to build swiftui-showcase, reference main (0c2f4b), with Swift 5.9 for macOS (SPM) on 13 Mar 2025 22:48:50 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.60.1
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/ipedro/swiftui-showcase.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/ipedro/swiftui-showcase
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 0c2f4b9 tweak availability
Cloned https://github.com/ipedro/swiftui-showcase.git
Revision (git rev-parse @):
0c2f4b9297bb3b277d38e04ed9ade89dffac5440
SUCCESS checkout https://github.com/ipedro/swiftui-showcase.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             5.9
Building package at path:  $PWD
https://github.com/ipedro/swiftui-showcase.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.2.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': Invalid manifest (compiled with: ["/Applications/Xcode-15.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/TemporaryDirectory.EWkIr0/vfs.yaml", "-L", "/Applications/Xcode-15.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode-15.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-target", "arm64-apple-macosx13.0", "-sdk", "/Applications/Xcode-15.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.2.sdk", "-F", "/Applications/Xcode-15.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks", "-I", "/Applications/Xcode-15.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib", "-L", "/Applications/Xcode-15.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib", "-swift-version", "5", "-I", "/Applications/Xcode-15.2.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-sdk", "/Applications/Xcode-15.2.0.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.2.sdk", "-package-description-version", "5.9.0", "/Users/admin/builder/spi-builder-workspace/Package.swift", "-Xfrontend", "-disable-implicit-concurrency-module-import", "-Xfrontend", "-disable-implicit-string-processing-module-import", "-o", "/var/folders/fs/0w3t9t1d28xc3bj0tgb8hcrw0000gn/T/TemporaryDirectory.KXBYqA/spi-builder-workspace-manifest"])
error: fatalError
/Users/admin/builder/spi-builder-workspace/Package.swift:5:56: error: cannot convert value of type 'String' to expected argument type 'String.Element' (aka 'Character')
let isDevelopment = !Context.packageDirectory.contains("/checkouts/")
                                                       ^
BUILD FAILURE 5.9 macosSpm