Ever since I updated to Xcode 16.2, no device running iOS 18 shows up in Xcode. I can see the devices in Finder and Apple Configurator, but not in Xcode. When I run xcrun devicectl list devices, I also do not see the devices, so I assume the issue is in CoreDevice somewhere.
I've tried many things I've seen suggested in similar threads (toggling developer mode, reinstalling Xcode, using a different physical cable, etc) and so far nothing has helped. This same behavior is also happening for my entire development team, which has been as difficult as you might imagine.
Any info on how to resolve this would be much appreciated.
Xcode
RSS for tagBuild, test, and submit your app using Xcode, Apple's integrated development environment.
Selecting any option will automatically load the page
Post
Replies
Boosts
Views
Created
I am experiencing an issue where Xcode's predictive code completion is not downloading. Despite having a stable internet connection, the necessary code completion data does not seem to install, leading to incomplete or missing suggestions while coding.
Steps Taken:
1.Restarted Xcode
2.Checked for Xcode and macOS updates (everything is up to date)
3.Cleared Derived Data (~/Library/Developer/Xcode/DerivedData)
4.Reset Xcode’s package caches
5.Attempted reinstalling Xcode
6.Verified that "Enable Predictive Code Completion" is turned on in preferences
System Details:
Xcode Version: [Xcode 16.2 (23507) (Build 16C5032a)]
macOS Version: [macOS Version 15.3 (Build 24D60)]
Topic:
Developer Tools & Services
SubTopic:
Xcode
The operation couldn’t be completed. (IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $123069a90).DownloadError error 3.)
Domain: IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $123069a90).DownloadError
Code: 3
User Info: {
DVTErrorCreationDateKey = "2025-01-31 01:58:50 +0000";
}
There was an error processing the asset.
Domain: IDELanguageModelKit.IDEModelDownloadAdapter.(unknown context at $123069a90).DownloadError
Code: 3
System Information
macOS Version 15.3 (Build 24D60)
Xcode 16.2 (23507) (Build 16C5032a)
Timestamp: 2025-01-31T09:58:50+08:00
Topic:
Developer Tools & Services
SubTopic:
Xcode
Issue description: Using Xcodebuild command to build a project using Xcode 16.1 and 16.2, getting multiple device simulator warnings with same os and same model. Please see issue: https://github.com/actions/runner-images/issues/11036
Repro steps: create a Xcode project, build it using below command with Xcode 16 version.
run: |
echo "Building project manually..."
xcodebuild -workspace MyApp.xcworkspace
-scheme MyApp
-destination 'platform=iOS Simulator,name=iPhone 16 Pro,OS=18.2'
build | xcbeautify --renderer github-actions
I wanted to see if anyone else is having this issue. We are trying to update our app, but on XCode, there is this error message showing:
Team: Unknown Name (Code).
There is a check in "Automatically Manage Signing".
Normally, Apple provides this information to XCode automatically but this time it seems like it's either not sending it or not receiving it.
If anyone knows what is happening here, any suggestion/advice would be greatly appreciated!
Thank you!
When I debug in Xcode, there is a launch flag that is normally set to "Automatically", and after building, Xcode installs & runs the app in the simulator or device.
The other setting is "Wait for executable to be launched". I don't use this feature too much, but I thought what it would do in build & install the app, but not launch. So, the idea would be that you could install the app, then take over - as a user - and tap the icon to launch the app. At this point, the Debugger would take over again, and you could debug the app from a very early spot.
When I set that flag now, the app never gets installed, so I can't do this. Xcode just has this in its status bar, and it never changes:
Waiting to attach on
I swore that it used to install the app in the sim for this setting. I don't know how many versions ago it was, but I really thought it did this. Does it not anymore, or should I file a bug?
I have a multiplatform app that I've been working on that targets iphones, ipad, and macos. I also have a widgetextension that targets all three devices. On iphones and ipads, the widgets show up in the widget gallery with no problems. But on the mac, the widget center does show my app, but its widgets are "from iPhone" meaning that if my app was not install on an iphone, they just won't show up on the mac at all.
I have not idea of what I'm doing wrong or how to fix it. Do I need to create a widget extension for the mac seperately?
I'm trying to track down why an external tool is claiming that Xcode isn't installed, despite it being installed (and used daily) in its default location.
A visit to Xcode's Settings/Locations page shows a version selected for command-line tools, but underneath it says "No Xcode Selected."
Why?
Hello everyone, I currently have a M1 Pro MacBook Pro (16gb) and a M1 Mac Mini (8gb), and I was searching a way to use the computing power of the Mac Mini to build my projects, even being a less powered machine, I think it can help since it will be doing just one thing.
I wanted to normally write code on the MacBook, but instead of building it locally (including the previews), it will be done on the Mac Mini via network connection or even Thunderbolt Bridge (if possible).
On a past Apple event (Oct. 30, 2018), was said that it was possible (31:00), but I was not able to find any kind of documentation or guidance on that.
Event Video:
https://youtu.be/bfHEnw6Rm-4?si=6wyoCLnWyyqG3Qm6
I'm getting hundreds of the message below in Xcode. I've narrowed it down to when I instantiate the following
AVAudioUnitComponentManager.shared()
Message send exceeds rate-limit threshold and will be dropped. { reporterID=231700600717315, rateLimit=32hz }
I've got an existing app which is using some 3rd party xcframeworks within its app extensions (for example within a Notification Service Extension).
Within the target for the app extensions there is a Frameworks and Libraries section where the xcframework was dragged and dropped into.
However now I want to create a new project and do a similar thing, within the app's target there is a Frameworks and Libraries section, but when an app extension target is created, Xcode is not adding a Frameworks and Libraries section.
There is a Link Library with Binary section, however this doesn't have an embed section (where you can select to embed, don't embed, embed without signing etc.) and I get build error trying to drag and drop the xcframework in here.
Where id the Framewoks and Libraries section go for app extensions for projects created with Xcode 16? How can this section be added?
We are encountering a persistent code signing error with in-app purchase capabilities in our iOS app. Despite having the com.apple.developer.in-app-purchase entitlement properly configured in the app's entitlements file and the In-App Purchase capability enabled in both Xcode and the App ID configuration in the Apple Developer Portal, we continue to receive the error: "The provisioning profile 'iOS Team Provisioning Profile: does not include the com.apple.developer.in-app-purchase entitlement." We have attempted multiple solutions including:
Regenerating provisioning profiles
Cleaning and rebuilding the project
Switching between automatic and manual signing
Removing and re-adding the in-app purchase capability
Verifying all entitlements and capabilities configurations
The error persists despite the entitlement being correctly set in the entitlements file and the capability being enabled in the App ID. This appears to be an issue with how the provisioning profile is being generated or how the entitlement is being recognized by Xcode's code signing system.
when opening Main.storyboard, all screens turn black, XCode freezes, and then closes. I am adding the font according to this guide. I'm trying to add Inter-VariableFont_opsz,wght.ttf of the https://fonts.google.com/specimen/Inter
I am experiencing an issue with Xcode 16.2 (15E204a) where global workspace search does not return results from .xib files.
Topic:
Developer Tools & Services
SubTopic:
Xcode
In Xcode Version 16.2 (16C5032a) - and previous versions too, the download container in the Devices & Simulators functionality no longer works.
It will start downloading the container, however it will also:
show NO download progress
fail to download the whole container (the downloaded container is missing whole directories, eg. AppData/Library is missing - where my application stores the CoreData db)
show no errors
This was tested with the XCode version stated above (and previous versions) and with iPhone XR (18.1.1 - MR42CN/A) and with iPad (17.7.2 - MR7F2FD/A).
How can I debug this issue / make the Xcode download the whole container?
Running on Mac mini 15.1.1 (24B91).
Topic:
Developer Tools & Services
SubTopic:
Xcode
I've gone over the memory graph debugger documentation and WWDC videos.
The available documentation is sparse and does not go into any detail of what things mean.
Through usage I have a fair understanding of what most symbols and reference lines mean except for the line from an object that loops back on itself in the top right corner of an object symbol. I have noticed it always appears on dictionaries, I have this on one of my own classes and want to know what it means?
I'm trying to use Xcode UI tests for the first time. I added a UI Tests target and set up the signing, then opened the default AppnameUITests.swift file. I added a new function named testAboutPage(), clicked inside the block and clicked the Record UI Test button (red circle) at the bottom of the editor window. If the app is already running when I do this, Xcode crashes immediately. If the app is not running, Xcode builds and runs the app, then crashes.
I've seen reports of this going back years, but none of the posts have a solution. I do have a crash log to share. Does anyone know how to get past this?
This forum won't let me upload the complete crash log because it exceeds the size limit, but here's the first part through the stack trace of the crashed thread:
Process: Xcode [46652]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 16.2 (23507)
Build Info: IDEApplication-23507000000000000~2 (16C5032a)
App Item ID: 497799835
App External ID: 870964517
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
User ID: 503
Date/Time: 2025-02-04 12:58:05.5200 -0800
OS Version: macOS 15.3 (24D60)
Report Version: 12
Anonymous UUID: 144B0B99-8D44-736B-0D9A-1F6FA6DF85F7
Time Awake Since Boot: 48000 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Xcode [46652]
Application Specific Information:
abort() called
Application Specific Signatures:
((result)) != nil
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x18a3b3720 __pthread_kill + 8
1 libsystem_pthread.dylib 0x18a3ebf70 pthread_kill + 288
2 libsystem_c.dylib 0x18a2f8908 abort + 128
3 IDEKit 0x109e81554 +[IDEAssertionHandler _handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 964
4 IDEKit 0x109e819e4 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] + 876
5 DVTFoundation 0x10600d358 _DVTAssertionHandler + 424
6 DVTFoundation 0x10600d4d8 _DVTAssertionFailureHandler + 196
7 IDEKit 0x10a1f99e4 -[IDEUIRecordingManager _workspaceTabController] + 176
8 IDEKit 0x10a1fa528 __94-[IDEUIRecordingManager _startRecordingWithLaunchSession:alwaysAskForAPIAccess:reservedNames:]_block_invoke_3 + 252
9 DVTFoundation 0x10611fc9c __DVT_CALLING_CLIENT_BLOCK__ + 16
10 DVTFoundation 0x1061206c4 __DVTDispatchAsync_block_invoke + 152
11 libdispatch.dylib 0x18a237854 _dispatch_call_block_and_release + 32
12 libdispatch.dylib 0x18a2395b4 _dispatch_client_callout + 20
13 libdispatch.dylib 0x18a248040 _dispatch_main_queue_drain + 984
14 libdispatch.dylib 0x18a247c58 _dispatch_main_queue_callback_4CF + 44
15 CoreFoundation 0x18a5139d0 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16
16 CoreFoundation 0x18a4d35bc __CFRunLoopRun + 1996
17 CoreFoundation 0x18a4d2734 CFRunLoopRunSpecific + 588
18 HIToolbox 0x195a41530 RunCurrentEventLoopInMode + 292
19 HIToolbox 0x195a47348 ReceiveNextEventCommon + 676
20 HIToolbox 0x195a47508 _BlockUntilNextEventMatchingListInModeWithFilter + 76
21 AppKit 0x18e04a848 _DPSNextEvent + 660
22 AppKit 0x18e9b0c24 -[NSApplication(NSEventRouting) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 688
23 AppKit 0x18e03d874 -[NSApplication run] + 480
24 IDEKit 0x109e50f14 -[IDEApplication run] + 192
25 AppKit 0x18e014068 NSApplicationMain + 888
26 dyld 0x18a06c274 start + 2840
Got an issue during a (hopefully) vanilla install of Game Porting Toolkit,
brew -v install apple/apple/game-porting-toolkit
configure:5057: checking for C compiler version
configure:5066: /usr/local/opt/game-porting-toolkit-compiler/bin/clang --version >&5
clang version 8.0.0
Target: x86_64-apple-darwin24.1.0
Thread model: posix
InstalledDir: /usr/local/opt/game-porting-toolkit-compiler/bin
configure:5077: $? = 0
configure:5066: /usr/local/opt/game-porting-toolkit-compiler/bin/clang -v >&5
clang version 8.0.0
Target: x86_64-apple-darwin24.1.0
Thread model: posix
InstalledDir: /usr/local/opt/game-porting-toolkit-compiler/bin
configure:5077: $? = 0
configure:5066: /usr/local/opt/game-porting-toolkit-compiler/bin/clang -V >&5
clang-8: error: argument to '-V' is missing (expected 1 value)
clang-8: error: no input files
configure:5077: $? = 1
configure:5066: /usr/local/opt/game-porting-toolkit-compiler/bin/clang -qversion >&5
clang-8: error: unknown argument '-qversion', did you mean '--version'?
clang-8: error: no input files
configure:5077: $? = 1
configure:5066: /usr/local/opt/game-porting-toolkit-compiler/bin/clang -version >&5
clang-8: error: unknown argument '-version', did you mean '--version'?
clang-8: error: no input files
configure:5077: $? = 1
configure:5097: checking whether the C compiler works
configure:5119: /usr/local/opt/game-porting-toolkit-compiler/bin/clang -I/usr/local/opt/zlib/include -I/usr/local/opt/freetype/include -I/usr/local/opt/sdl2/include -I/usr/local/opt/libgphoto2/include -I/usr/local/opt/faudio/include -I/usr/local/opt/jpeg/include -I/usr/local/opt/libpng/include -I/usr/local/opt/mpg123/include -I/usr/local/opt/libtiff/include -I/usr/local/opt/libgsm/include -I/usr/local/opt/glib/include -I/usr/local/opt/gnutls/include -I/usr/local/opt/libusb/include -I/usr/local/opt/gettext/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sane-backends/include -O3 -Wno-implicit-function-declaration -Wno-format -Wno-deprecated-declarations -Wno-incompatible-pointer-types -L/usr/local/opt/zlib/lib -L/usr/local/opt/freetype/lib -L/usr/local/opt/sdl2/lib -L/usr/local/opt/libgphoto2/lib -L/usr/local/opt/faudio/lib -L/usr/local/opt/jpeg/lib -L/usr/local/opt/libpng/lib -L/usr/local/opt/mpg123/lib -L/usr/local/opt/libtiff/lib -L/usr/local/opt/libgsm/lib -L/usr/local/opt/glib/lib -L/usr/local/opt/gnutls/lib -L/usr/local/opt/libusb/lib -L/usr/local/opt/gettext/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sane-backends/lib -lSystem -L/usr/local/lib -Wl,-rpath,/usr/local/lib -Wl,-rpath,@executable_path/../lib/external conftest.c >&5
-macosx_version_min has been renamed to -macos_version_min
dyld[64621]: Symbol not found: _lto_codegen_debug_options_array
Referenced from: <DCCE8DC8-8CC1-3A5E-9CB4-5C97EAE2230B> /Library/Developer/CommandLineTools/usr/bin/ld
Expected in: <64802029-27D0-3E0A-B92F-1DB69924EA28> /usr/local/Cellar/game-porting-toolkit-compiler/0.1/lib/libLTO.dylib
clang-8: error: unable to execute command: Abort trap: 6
clang-8: error: linker command failed due to signal (use -v to see invocation)
configure:5123: $? = 254
configure:5163: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "Wine"
| #define PACKAGE_TARNAME "wine"
| #define PACKAGE_VERSION "7.7"
| #define PACKAGE_STRING "Wine 7.7"
| #define PACKAGE_BUGREPORT "wine-devel@winehq.org"
| #define PACKAGE_URL "https://www.winehq.org"
| /* end confdefs.h. */
|
| int
| main (void)
| {
|
| ;
| return 0;
| }
configure:5168: error: in `/private/tmp/game-porting-toolkit-20250205-64149-m0jk9i/wine64-build':
configure:5170: error: C compiler cannot create executables
See `config.log' for more details
When i run clang manually, similar failure
teddys-MacBook-Pro:~ teddyvandenberg$ /usr/local/opt/game-porting-toolkit-compiler/bin/clang -I/usr/local/opt/zlib/include -I/usr/local/opt/freetype/include -I/usr/local/opt/sdl2/include -I/usr/local/opt/libgphoto2/include -I/usr/local/opt/faudio/include -I/usr/local/opt/jpeg/include -I/usr/local/opt/libpng/include -I/usr/local/opt/mpg123/include -I/usr/local/opt/libtiff/include -I/usr/local/opt/libgsm/include -I/usr/local/opt/glib/include -I/usr/local/opt/gnutls/include -I/usr/local/opt/libusb/include -I/usr/local/opt/gettext/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sane-backends/include -O3 -Wno-implicit-function-declaration -Wno-format -Wno-deprecated-declarations -Wno-incompatible-pointer-types -L/usr/local/opt/zlib/lib -L/usr/local/opt/freetype/lib -L/usr/local/opt/sdl2/lib -L/usr/local/opt/libgphoto2/lib -L/usr/local/opt/faudio/lib -L/usr/local/opt/jpeg/lib -L/usr/local/opt/libpng/lib -L/usr/local/opt/mpg123/lib -L/usr/local/opt/libtiff/lib -L/usr/local/opt/libgsm/lib -L/usr/local/opt/glib/lib -L/usr/local/opt/gnutls/lib -L/usr/local/opt/libusb/lib -L/usr/local/opt/gettext/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sane-backends/lib -lSystem -L/usr/local/lib -Wl,-rpath,/usr/local/lib -Wl,-rpath,@executable_path/../lib/external
-macosx_version_min has been renamed to -macos_version_min
dyld[65327]: Symbol not found: _lto_codegen_debug_options_array
Referenced from: <DCCE8DC8-8CC1-3A5E-9CB4-5C97EAE2230B> /Library/Developer/CommandLineTools/usr/bin/ld
Expected in: <64802029-27D0-3E0A-B92F-1DB69924EA28> /usr/local/Cellar/game-porting-toolkit-compiler/0.1/lib/libLTO.dylib
clang-8: error: unable to execute command: Abort trap: 6
clang-8: error: linker command failed due to signal (use -v to see invocation)
This is where my bisection skills cease, curious if anyone else has seen this
[config.log]
(https://developer.apple.com/forums/content/attachment/ed9a5c1a-98bb-46c4-a993-0884bab041fc)
Since dragImage: is deprecated I am trying to update drag and drop with beginDraggingSessionWithItems:.
Drag work fine but I cannot get drop to work correctly.
In the code below change #ifndef to #ifdef (using dragImage:) make drop work as expected.
draggingEntered, draggingUpdated, draggingExited, draggingEnded are all called but NOT performDragOperation (which do the drop).
Uncommenting the line
[pb_item pasteboard:paste_board provideDataForType:@"LN_PboardType"];
cause an exceptionPreprocess: -[NSPasteboardItem pasteboard:provideDataForType:]: unrecognized selector sent to instance 0x600001e64240.
I also try add NSDraggingDestination, NSItemProviderWriting, NSPasteboardTypeOwner to @interface line without success.
What I am doing wrong ?
Any other method to do Drag and Drop (other than dragImage: and beginDraggingSessionWithItems:) ?
Where can I found an Obj-C project using beginDraggingSessionWithItems: for drag an drop ?
``@interface Enclosure : NSView <NSDraggingSource, NSPasteboardItemDataProvider>
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
[super setAutoresizesSubviews:YES];
[self registerForDraggedTypes:[NSArray arrayWithObjects:@"LN_PboardType", NSPasteboardTypeString, nil]];
}
return self;
}
- (BOOL)acceptsFirstMouse:(NSEvent *)event
{
return YES;
}
- (void)mouseDown:(NSEvent *)drag_event
{
NSImage *drag_image;
NSPoint drag_position;
NSRect dragging_rect;
NSPasteboard *paste_board;
NSDraggingItem *drag_item;
NSArray *items_array;
NSPasteboardItem *pb_item;
paste_board = [NSPasteboard pasteboardWithName:@"LN_PboardType"];
[paste_board declareTypes:[NSArray arrayWithObjects:@"LN_PboardType", NSPasteboardTypeString, nil] owner:self];
pb_item = [[NSPasteboardItem alloc] init];
[pb_item setDataProvider:self forTypes:[NSArray arrayWithObjects:@"LN_PboardType", NSPasteboardTypeString, nil]];
// [pb_item pasteboard:paste_board provideDataForType:@"LN_PboardType"];
drag_image = [ [NSImage imageNamed:@"drag.jpg"];
drag_position = [self convertPoint:[drag_event locationInWindow] fromView:nil];
drag_position.x -= drag_image.size.width/2;
drag_position.y -= drag_image.size.height/2;
#ifndef DEPRECATED
[self dragImage:drag_image at:drag_position offset:NSZeroSize event:drag_event pasteboard:paste_board source:self slideBack:YES];
#else
drag_item = [[NSDraggingItem alloc] initWithPasteboardWriter:pb_item];
dragging_rect = NSMakeRect(drag_position.x, drag_position.y, drag_image.size.width, drag_image.size.height);
[drag_item setDraggingFrame:dragging_rect contents:drag_image];
items_array = [NSArray arrayWithObject:drag_item];
[self beginDraggingSessionWithItems:items_array event:drag_event source:(id)self];
#endif
}
- (NSDragOperation)draggingSession:(NSDraggingSession *)session sourceOperationMaskForDraggingContext:(NSDraggingContext)context
{
if (disable_drag_and_drop)
return NSDragOperationNone;
switch (context)
{
case NSDraggingContextWithinApplication:
return NSDragOperationCopy;
case NSDraggingContextOutsideApplication:
return NSDragOperationMove;
}
return NSDragOperationNone;
}
…``
Topic:
Developer Tools & Services
SubTopic:
Xcode
When test support code relies on production code, a diamond can occur. If this occurs across packages, it can lead to duplicated symbols and incorrect behavior at runtime despite no warnings at build time. This only occurs in Xcode and top-level application testing. This doesn't occur when the code being tested is in a separate package.
I'm trying to understand how to correctly manage shared test support code which needs to access production code, or if this is the correct way and it is an Xcode bug.
For a minimized example project, see https://github.com/rnapier/SupportCode.
The setup includes three packages: Dependencies, which manages all the dependencies for the app and tests; Core which contains core logic and test support; and Feature, which relies on Core an contains feature-related logic and test support.
Building this system causes Core.framework to show up three times in DerivedData:
./App.app/PlugIns/AppTests.xctest/Frameworks/Core_59974D35D_PackageProduct.framework
./App.app/Frameworks/Core_59974D35D_PackageProduct.framework
./PackageFrameworks/Core_59974D35D_PackageProduct.framework
When unit tests are run, there is a collision on the symbol for Keychain:
objc[48914]: Class _TtC8Keychain8Keychain is implemented in both /Users/ornapier/Library/Developer/Xcode/DerivedData/App-grdjljgevqofhqgflgtrqvhvbtej/Build/Products/Debug-iphonesimulator/PackageFrameworks/Core_59974D35D_PackageProduct.framework/Core_59974D35D_PackageProduct (0x100a98118) and /Users/ornapier/Library/Developer/CoreSimulator/Devices/216C441E-4AE5-45EC-8E52-FA42D8562365/data/Containers/Bundle/Application/7197F2F2-EB26-42FF-B7DB-67116159897D/App.app/PlugIns/AppTests.xctest/AppTests (0x1011002c0). One of the two will be used. Which one is undefined.
This is not a benign warning. There are two distinct copies of _TtC8Keychain8Keychain and test cases will access one and the app will access a different one. This leads to mismatches when accessing static instances such as .shared.
I believe this dependency graph should work, and it does work as long as the top-level testing system is a Swift module. But if it is the application, it builds successfully, but behaves incorrectly in subtle ways.