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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 SwiftUIKit, reference 5.3.0 (0a735f), with Swift 5.10 for macOS (SPM) on 8 Apr 2025 21:53:15 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64

Build Log

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RunAll
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Builder version: 4.60.1
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/danielsaidi/SwiftUIKit.git
Reference: 5.3.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/danielsaidi/SwiftUIKit
 * tag               5.3.0      -> FETCH_HEAD
HEAD is now at 0a735f6 Fix multi-platform builds
Cloned https://github.com/danielsaidi/SwiftUIKit.git
Revision (git rev-parse @):
0a735f65c7f03755ce5b83c25c14f83d434f6b72
SUCCESS checkout https://github.com/danielsaidi/SwiftUIKit.git at 5.3.0
========================================
Build
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Selected platform:         macosSpm
Swift version:             5.10
Building package at path:  $PWD
https://github.com/danielsaidi/SwiftUIKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-15.4.0.app xcrun swift build --arch arm64
error: 'spi-builder-workspace': package 'spi-builder-workspace' is using Swift tools version 6.0.0 but the installed version is 5.10.0
BUILD FAILURE 5.10 macosSpm