Swift Package Index

Build Information

Failed to build CellKit, reference 1.0.0 (a6f457), with Swift 6.3 for macOS (SPM) on 7 Sep 2026 18:30:33 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
========================================
Builder version: 5.0.2
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/futuredapp/CellKit.git
Reference: 1.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/futuredapp/CellKit
 * tag               1.0.0      -> FETCH_HEAD
HEAD is now at a6f457d Merge pull request #55 from futuredapp/feature/default-main-actor-isolation
Cloned https://github.com/futuredapp/CellKit.git
Revision (git rev-parse @):
a6f457d6d10cfac307814f604a8e24a129553434
SUCCESS checkout https://github.com/futuredapp/CellKit.git at 1.0.0
Fetching https://github.com/ra1028/DifferenceKit.git
[1/2328] Fetching differencekit
Fetched https://github.com/ra1028/DifferenceKit.git from cache (1.72s)
Computing version for https://github.com/ra1028/DifferenceKit.git
Computed https://github.com/ra1028/DifferenceKit.git at 1.3.0 (4.58s)
Creating working copy for https://github.com/ra1028/DifferenceKit.git
Working copy of https://github.com/ra1028/DifferenceKit.git resolved at 1.3.0
========================================
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": "cellkit",
      "name": "CellKit",
      "url": "https://github.com/futuredapp/CellKit.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/CellKit",
      "traits": [
        "default"
      ],
      "dependencies": [
        {
          "identity": "differencekit",
          "name": "DifferenceKit",
          "url": "https://github.com/ra1028/DifferenceKit.git",
          "version": "1.3.0",
          "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/DifferenceKit",
          "traits": [
            "default"
          ],
          "dependencies": [
          ]
        }
      ]
    }
  ]
}
Fetching https://github.com/futuredapp/CellKit.git
[1/1178] Fetching cellkit
Fetched https://github.com/futuredapp/CellKit.git from cache (1.04s)
Fetching https://github.com/ra1028/DifferenceKit.git from cache
Fetched https://github.com/ra1028/DifferenceKit.git from cache (0.76s)
Computing version for https://github.com/ra1028/DifferenceKit.git
Computed https://github.com/ra1028/DifferenceKit.git at 1.3.0 (0.83s)
Creating working copy for https://github.com/ra1028/DifferenceKit.git
Working copy of https://github.com/ra1028/DifferenceKit.git resolved at 1.3.0
Creating working copy for https://github.com/futuredapp/CellKit.git
Working copy of https://github.com/futuredapp/CellKit.git resolved at 1.0.0 (a6f457d)
warning: '.resolve-product-dependencies': dependency 'cellkit' is not used by any target
Found 1 product dependencies
  - DifferenceKit
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.3
Building package at path:  $PWD
https://github.com/futuredapp/CellKit.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.5.0.app xcrun swift build --arch arm64
Building for debugging...
[0/4] Write sources
[3/4] Write swift-version-69A768CDF2A0BEE1.txt
[5/29] Compiling CellKit LazySupplementaryViewProvider.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[6/29] Compiling CellKit SupplementaryElementKind.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[7/30] Compiling CellKit LazyCellProvider.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[8/30] Compiling CellKit CollectionSupplementaryViewModel.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[9/30] Compiling CellKit ReusableView.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
error: emit-module command failed with exit code 1 (use -v to see invocation)
[10/30] Emitting module CellKit
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[11/30] Compiling CellKit DataSource.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[12/30] Compiling CellKit CollectionReusableView.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[13/30] Compiling CellKit CellConfigurable.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[14/30] Compiling CellKit CellConvertible.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[15/30] Compiling DifferenceKit ArraySection.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[16/30] Compiling DifferenceKit Changeset.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[17/30] Compiling DifferenceKit Algorithm.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
[18/30] Compiling DifferenceKit AnyDifferentiable.swift
/Users/admin/builder/spi-builder-workspace/Sources/CellKit/CollectionReusableView.swift:1:8: error: no such module 'UIKit'
 1 | import UIKit
   |        `- error: no such module 'UIKit'
 2 |
 3 | public final class CollectionReusableView: UICollectionReusableView, CellConfigurable {
BUILD FAILURE 6.3 macosSpm