Swift Package Index

Build Information

Failed to build Checkbox, reference main (7276e6), with Swift 6.3 for macOS (SPM) on 12 Apr 2026 11:00:11 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 4.70.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/bradhowes/Checkbox.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/bradhowes/Checkbox
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 7276e6a Serialize value updates
Cloned https://github.com/bradhowes/Checkbox.git
Revision (git rev-parse @):
7276e6ade2040d6163588084fda32f7e85d6b0d4
SUCCESS checkout https://github.com/bradhowes/Checkbox.git at main
Fetching https://github.com/pointfreeco/swift-snapshot-testing.git
[1/16046] Fetching swift-snapshot-testing
Fetched https://github.com/pointfreeco/swift-snapshot-testing.git from cache (10.05s)
Computing version for https://github.com/pointfreeco/swift-snapshot-testing.git
Computed https://github.com/pointfreeco/swift-snapshot-testing.git at 1.19.2 (10.69s)
Fetching https://github.com/pointfreeco/swift-custom-dump
Fetching https://github.com/swiftlang/swift-syntax
[1/5464] Fetching swift-custom-dump
[5465/80431] Fetching swift-custom-dump, swift-syntax
Fetched https://github.com/swiftlang/swift-syntax from cache (4.30s)
Fetched https://github.com/pointfreeco/swift-custom-dump from cache (4.30s)
Computing version for https://github.com/pointfreeco/swift-custom-dump
Computed https://github.com/pointfreeco/swift-custom-dump at 1.5.0 (4.95s)
Fetching https://github.com/pointfreeco/xctest-dynamic-overlay
[1/5723] Fetching xctest-dynamic-overlay
Fetched https://github.com/pointfreeco/xctest-dynamic-overlay from cache (1.27s)
Computing version for https://github.com/swiftlang/swift-syntax
Computed https://github.com/swiftlang/swift-syntax at 603.0.0 (2.10s)
Computing version for https://github.com/pointfreeco/xctest-dynamic-overlay
Computed https://github.com/pointfreeco/xctest-dynamic-overlay at 1.9.0 (0.63s)
Creating working copy for https://github.com/swiftlang/swift-syntax
Working copy of https://github.com/swiftlang/swift-syntax resolved at 603.0.0
Creating working copy for https://github.com/pointfreeco/swift-custom-dump
Working copy of https://github.com/pointfreeco/swift-custom-dump resolved at 1.5.0
Creating working copy for https://github.com/pointfreeco/swift-snapshot-testing.git
Working copy of https://github.com/pointfreeco/swift-snapshot-testing.git resolved at 1.19.2
Creating working copy for https://github.com/pointfreeco/xctest-dynamic-overlay
Working copy of https://github.com/pointfreeco/xctest-dynamic-overlay resolved at 1.9.0
Downloading package prebuilt https://download.swift.org/prebuilts/swift-syntax/603.0.0/swiftlang-6.3.0.123.5-macosx26.4-MacroSupport.zip
Downloaded https://download.swift.org/prebuilts/swift-syntax/603.0.0/swiftlang-6.3.0.123.5-macosx26.4-MacroSupport.zip (0.29s)
========================================
ResolveProductDependencies
========================================
Resolving dependencies ...
{
  "identity": ".resolve-product-dependencies",
  "name": "resolve-dependencies",
  "url": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "version": "unspecified",
  "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies",
  "traits": [
    "default"
  ],
  "dependencies": [
    {
      "identity": "checkbox",
      "name": "Checkbox",
      "url": "https://github.com/bradhowes/Checkbox.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/Checkbox",
      "traits": [
        "default"
      ],
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/bradhowes/Checkbox.git
[1/53] Fetching checkbox
Fetched https://github.com/bradhowes/Checkbox.git from cache (0.75s)
Creating working copy for https://github.com/bradhowes/Checkbox.git
Working copy of https://github.com/bradhowes/Checkbox.git resolved at main (7276e6a)
warning: '.resolve-product-dependencies': dependency 'checkbox' is not used by any target
Found 0 product dependencies
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/bradhowes/Checkbox.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version--6988338F2F200930.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/4] Emitting module Checkbox
/Users/admin/builder/spi-builder-workspace/Sources/Checkbox/Checkbox.swift:3:8: error: no such module 'UIKit'
  1 | // Copyright © 2018 Brad Howes. All rights reserved.
  2 |
  3 | import UIKit
    |        `- error: no such module 'UIKit'
  4 | import os
  5 |
[4/4] Compiling Checkbox Checkbox.swift
/Users/admin/builder/spi-builder-workspace/Sources/Checkbox/Checkbox.swift:3:8: error: no such module 'UIKit'
  1 | // Copyright © 2018 Brad Howes. All rights reserved.
  2 |
  3 | import UIKit
    |        `- error: no such module 'UIKit'
  4 | import os
  5 |
warning: 'spi-builder-workspace': Invalid Exclude '/Users/admin/builder/spi-builder-workspace/Sources/Checkbox/Checkbox.playground': File not found.
BUILD FAILURE 6.3 macosSpm