Swift Package Index

Build Information

Failed to build FSCalendar, reference 2.8.4 (0fbdec), with Swift 6.3 for macOS (SPM) on 13 Apr 2026 18:35:59 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/WenchaoD/FSCalendar.git
Reference: 2.8.4
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/WenchaoD/FSCalendar
 * tag               2.8.4      -> FETCH_HEAD
HEAD is now at 0fbdec5 version bump
Cloned https://github.com/WenchaoD/FSCalendar.git
Revision (git rev-parse @):
0fbdec5172fccb90f707472eeaea4ffe095278f6
SUCCESS checkout https://github.com/WenchaoD/FSCalendar.git at 2.8.4
========================================
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": "fscalendar",
      "name": "FSCalendar",
      "url": "https://github.com/WenchaoD/FSCalendar.git",
      "version": "unspecified",
      "path": "/Users/admin/builder/spi-builder-workspace/.resolve-product-dependencies/.build/checkouts/FSCalendar",
      "traits": [
        "default"
      ],
      "dependencies": [
      ]
    }
  ]
}
Fetching https://github.com/WenchaoD/FSCalendar.git
[1/8292] Fetching fscalendar
Fetched https://github.com/WenchaoD/FSCalendar.git from cache (1.35s)
Creating working copy for https://github.com/WenchaoD/FSCalendar.git
Working copy of https://github.com/WenchaoD/FSCalendar.git resolved at 2.8.4 (0fbdec5)
warning: '.resolve-product-dependencies': dependency 'fscalendar' 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/WenchaoD/FSCalendar.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.4.0.app xcrun swift build --arch arm64
Building for debugging...
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarWeekdayView.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarWeekdayView.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
1 error generated.
[0/15] Compiling FSCalendar FSCalendarWeekdayView.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarCollectionView.m:11:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarCollectionView.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarCollectionView.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarExtensions.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarExtensions.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarExtensions.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarTransitionCoordinator.m:9:
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarTransitionCoordinator.h:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendar.h:18:9: fatal error: 'UIKit/UIKit.h' file not found
   18 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarHeaderView.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendar.h:18:9: fatal error: 'UIKit/UIKit.h' file not found
   18 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarHeaderView.m
[0/15] Compiling FSCalendar FSCalendarTransitionCoordinator.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarStickyHeader.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarStickyHeader.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarStickyHeader.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarCell.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarCell.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarCell.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarConstants.m:11:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarConstants.h:11:9: fatal error: 'UIKit/UIKit.h' file not found
   11 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarConstants.m
[0/15] Compiling FSCalendar FSCalendarDelegationFactory.m
In file included from /Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarSeparatorDecorationView.m:9:
/Users/admin/builder/spi-builder-workspace/FSCalendar/FSCalendarSeparatorDecorationView.h:9:9: fatal error: 'UIKit/UIKit.h' file not found
    9 | #import <UIKit/UIKit.h>
      |         ^~~~~~~~~~~~~~~
[0/15] Compiling FSCalendar FSCalendarSeparatorDecorationView.m
BUILD FAILURE 6.3 macosSpm