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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 LiveKnob, reference master (0d9b65), with Swift 6.0 for macOS (SPM) on 11 May 2025 01:03:30 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.61.3
Interrupt handler set up.
========================================
Checkout
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Clone URL: https://github.com/cemolcay/liveknob.git
Reference: master
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/cemolcay/liveknob
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 0d9b657 Update drawing function
Cloned https://github.com/cemolcay/liveknob.git
Revision (git rev-parse @):
0d9b6572ea15e80e8f94954d837c1d1d150c8b05
SUCCESS checkout https://github.com/cemolcay/liveknob.git at master
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/cemolcay/liveknob.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.2.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-5BDAB9E9C0126B9D.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module LiveKnob
/Users/admin/builder/spi-builder-workspace/Sources/LiveKnob/LiveKnob.swift:9:8: error: no such module 'UIKit'
  7 | //
  8 |
  9 | import UIKit
    |        `- error: no such module 'UIKit'
 10 | import UIKit.UIGestureRecognizerSubclass
 11 |
[4/4] Compiling LiveKnob LiveKnob.swift
/Users/admin/builder/spi-builder-workspace/Sources/LiveKnob/LiveKnob.swift:9:8: error: no such module 'UIKit'
  7 | //
  8 |
  9 | import UIKit
    |        `- error: no such module 'UIKit'
 10 | import UIKit.UIGestureRecognizerSubclass
 11 |
BUILD FAILURE 6.0 macosSpm