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A Summary of the WWDC25 Group Lab - Developer Tools
At WWDC25 we launched a new type of Lab event for the developer community - Group Labs. A Group Lab is a panel Q&A designed for a large audience of developers. Group Labs are a unique opportunity for the community to submit questions directly to a panel of Apple engineers and designers. Here are the highlights from the WWDC25 Group Lab for Developer Tools. Will my project codebase be used for training when I use Xcode's intelligent assistant powered by cloud-based models? When using ChatGPT without logging in, your data will not be used to improve any models. If you log in to a ChatGPT account, this is based on your ChatGPT account settings, which allows you to opt-out (it defaults to on). When using Xcode with accounts for other model providers, you should check with the policies of your provider. And finally, at no point will any portion of your codebase be used to train or improve any Apple models. We'd love to make our SwiftUI Previews (and soon, Playgrounds) as snappy as possible. Is there any way to skip certain build steps, such as running linters? It seems the build environment is exactly the same (compared to a debug build), but maybe there's a trick. Starting with Xcode 16, SwiftUI previews use the exact same build artifacts as the regular build. The new Playgrounds support in Xcode 26 uses these build artifacts too. Shell script build phases are the most common thing that introduces extra build time, so as a first step, try turning off all shell script build phases (like linters) to get an idea if that’s the issue. If those build phases add significant time to your build, consider moving some of those phases into asynchronous steps, such as running linters before committing instead of on every build. If you do need a shell script build phase to run during your build, make sure to explicitly define the input and output files, as that is a huge way to improve your build performance. Are we able to provide additional context for the models, like coding standards? Documentation for third party dependencies? Documentation on your own codebase that explains things like architecture and more? In general, Xcode will automatically search for the right context based on the question and the evolving answer, as the model can interact multiple times with your project as it develops an answer. This will automatically pick up the coding style of the code it sees, and can include files that contain architecture comments, etc. Beyond automatic context, you can manually attach other documents, even if they aren't in your project. For example, you could make a file with rules and ideas and attach it, and it will influence the response. We are very aware of other kinds of automatic context like rule files, etc, though Xcode does not support these at this time. Once ChatGPT is enabled for Coding Intelligence in Xcode 26, and I sign into my existing ChatGPT account, will the ChatGPT Coding Intelligence model in Xcode know about chat conversations on Xcode development done previously in the ChatGPT Mac app? Xcode does not use information from other conversations, and conversations started in Xcode are not accessible in the web UI or ChatGPT app. Is there a plan to make SwiftUI views easier to locate and understand in the view hierarchy like UIKit views? SwiftUI uses a declarative paradigm to define your user interface. That allows you to specify what you want, with the system translating that into an efficient representation at runtime. Unlike traditional AppKit and UIKit, seeing the runtime representation of SwiftUI views isn't sufficient in order to understand why it's not doing what you want. This year, we introduced a SwiftUI Instrument that shows why things are happening, like view re-rendering. Is it possible to use the AI chat with ChatGPT Enterprise? My company doesn't allow us to use the general ChatGPT, only the enterprise version they have setup that prevents data from being leaked Yes, Xcode 26 supports logging into any existing ChatGPT account, including enterprise accounts. If that does not meet your needs, you can also setup a local server that implements the popular chat completions REST API to talk to your enterprise account how you need. Now that Icon Composer is here, how does it complement or replace existing vector design tools such as Sketch for icon design? Icon Composer complements your existing vector design tools. You should continue to create your shapes, gradients, and layers in another tool like Sketch, and compose the exported SVG layers in Icon Composer. Once you bring your layers into Icon Composer, you can then use it to influence the translucency, blur, and specular highlights for your icon. What’s one feature or improvement in the new Xcode that you personally think developers will love, but might not immediately discover? Maybe something tucked away or quietly powerful that’s flown under the radar so far? One feature we're particularly excited about is the new power profiler for iOS, which gives you further insights into the energy consumption of your app beyond what was possible with the energy instrument previously. You can learn more about how to use this instrument and how it can help you greatly reduce your apps battery usage in the documentation, as well as the session Profile and optimize power usage in your app. There were also improvements in accessibility this year with Voice Control, where you can naturally speak your Swift code to Xcode, and it understands the Swift syntax as you speak. To see it in action, take a look at the demonstration in What’s new in Xcode 26. We have a software advisory council that is very sensitive to having our private information going to the cloud in any form. What information do you have to help me guide Xcode and Apple Intelligence through the acceptance process? One thing you can do is configure a proxy for your enterprise that implementing the popular Chat Completions API endpoint protocol. When using a model provider via URL, you can use your proxy endpoint to inspect the network traffic for anything that you do not want sent outside of your enterprise, and then forward the traffic through the proxy to your chosen model provider. Are there list of recommended LLMs to use with Xcode via Intelligence/Local? I've tried Gemma3-12B, but.. I hope there are better options? Apple doesn't have a published list of recommended local models. This is a fast-moving space, and so a recommendation would become out of date very quickly as new models are released. We encourage you to try out the local model support in Xcode 26 with models that you find meet your needs, and let us and the community know! (continued below)
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Jul ’25
Verification Error in Production: Should I Submit My App with the Backend in Sandbox Mode?
Hello, My payment system works correctly when my backend is in sandbox mode, but when I submit my app for review, I get the following error: VerificationException [Error] at SignedDataVerifier.verifyNotification (/Users/---/node_modules/@apple/app-store-server-library/dist/jws_verification.js:126:19) at SignedDataVerifier.verifyAndDecodeNotification (/Users/---/node_modules/@apple/app-store-server-library/dist/jws_verification.js:121:14) at process.processTicksAndRejections (node:internal/process/task_queues:95:5) at async file:///Users/---/src/api/routes/apple.routes.js:22:18 { status: 2, cause: undefined } Main Question For Apple to approve in-app purchases, should I submit my app for review with the backend in sandbox mode or production? Possible Causes of the Error I would appreciate any suggestions on what might be causing this error and how to fix it. Thanks in advance! 🚀
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Feb ’25
Lock Orientation and Disable Multitasking/Slide Over
Hello! I have a quick question about locking orientation and disabling Multitasking/Slide Over in a .swiftpm for the Swift Student Challenge. A .swiftpm file contains a Package.swift file. At the top of this file, there is a very scary warning that directs you to not edit it. However, being unable to edit this means that I cannot lock the orientation of an iPad and disable Multitasking/Slide Over. I have read that it does not break your project if you ignore the warning and I tried it out for myself — editing the file does indeed lock orientation and disable Multitasking/Slide Over! Although, as you can imagine, this is quite nerve-wracking. What are the actual technical implications of doing this? Are participants allowed to do this? If this does not seem like a good idea, would judges follow through with a note that tells them to simply not use certain orientations and Multitasking/Slide Over? (Yeah, I know… not an ideal thing but if there’s anyone to understand it would be Apple employees). I am faced with two uncertain options: ignore a warning and get what I need or follow the warning but then have a very poorly designed experience (some apps just aren’t meant for portrait and Multitasking/Slide Over, even if this is not a full app). I definitely don’t want hundreds of hours of work to go down the drain or risk rejection because of some type of problem with this, that’s for sure. Perhaps a “hack” would work if I were creating an actual app, but the stakes become higher when it is for this challenge. Thanks! :)
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Feb ’25
Building visionOS app with Firebase Source Distribution in Xcode Cloud
I have a working Xcode Cloud setup for my iOS and macOS targets, and I'm trying to add visionOS support. The issue is that Firebase requires using their source distribution for visionOS (instead of their default binary distribution). Locally, this works by launching Xcode with: open -a Xcode --env FIREBASE_SOURCE_FIRESTORE project.xcodeproj For Xcode Cloud, I've added a ci_post_clone.sh script that sets this environment variable for visionOS builds: #!/bin/bash if [[ $CI_PRODUCT_PLATFORM == "xrOS" ]]; then echo "Running setup for visionOS..." export FIREBASE_SOURCE_FIRESTORE=1 fi However, I'm getting the following error during build: an out-of-date resolved file was detected at /.../project.xcworkspace/xcshareddata/swiftpm/Package.resolved, which is not allowed when automatic dependency resolution is disabled So since setting FIREBASE_SOURCE_FIRESTORE=1 changes which SPM dependencies are required: Normal setup uses: abseil-cpp-binary, grpc-binary Source distribution needs: abseil-cpp-swiftpm, grpc-ios, boringssl-swiftpm What's the recommended way to handle this in Xcode Cloud when maintaining builds for all platforms? Should I be using separate workflows with different branches for different platforms? Or is there a better approach? System: Xcode 16.2 Using SPM for dependency management Firebase iOS SDK 10.29.0 Building for iOS, macOS, and visionOS Thanks in advance for any guidance!
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Feb ’25
About Xcode and GitHub
So I started a project in Xcode but without GitHub. Now I have prepared Xcode for GitHub and kind of made it work. I have also made a folder where I have cloned my project from GitHub. So is there any way to connect Xcode and the new folder. If I save my project it doesn't know about my new folder I presume: I could continue to use GitHub via Xcode but I'm afraid I will forget about commands in Git if I only use Xcode. If I should work on another project without Git.
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Feb ’25
Prevent Xcode from injecting UIRequiredDeviceCapabilities
Xcode 16.2 suddenly injects the UIRequiredDeviceCapabilities key into our app's Info.plist. This results in a rejection from App Store Connect because of this key: TMS-90109: This bundle is invalid - The key UIRequiredDeviceCapabilities in the Info.plist may not contain values that would prevent this application from running on devices that were supported by previous versions. Refer to QA1623 for additional information: https://developer.apple.com/library/ios/#qa/qa1623/_index.html The setting INFOPLIST_KEY_UIRequiredDeviceCapabilities is empty in our project, yet Xcode still injects: <key>UIRequiredDeviceCapabilities</key> <array> <string>arm64</string> </array> How can we prevent that? Or is there a way to strip it out during the build process? The Info.plist seems to get generated during an invisible build step, is there a way to make this explicit?
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Feb ’25
'leaks' message
My app has a debugging mode in which it invokes 'leaks' on itself. I am now seeing this message on stderr: Target process is an ancestor and permitting live process for ancestors so not generating a corpse to save resources by default. This sort of makes sense, but I would like a more detailed explanation. Is there some option I should be sending to 'leaks' to operate in a better mode? Should I be invoking it differently?
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Feb ’25
Apple is not granting access to the developer account, but funds have already been partially charged
Hello, We are facing a serious issue while trying to gain access to our developer account. We have submitted all the required documents (passport scan, payment information), but we still have not received access. At the same time, funds have already been partially charged from our card, yet there has been no progress from Apple. Support is not providing clear answers, and the process is being delayed. This is seriously affecting our work! Has anyone encountered a similar situation? How can we speed up the resolution? Any advice would be greatly appreciated. Thank you!
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Feb ’25
Error When Trying to Switch from ADEP to AdHoc for iOS App Deployment
I have created two different apps using ADEP, and they were working on iPad with iOS 14.6 and 14.7.1. The environments are as follows: Environment: 1.Mac mini (Mac OS X 10.7.5) Xcode 8.3.2 2.iMac (OS X El Capitan 10.11.6) Xcode 7.3 The certificates were exported from the environment in 1 and imported into 2. When I tried to switch from ADEP to AdHoc for app creation, I encountered an error. Specifically, the app worked fine on an iPad running iOS 12.5.7 in environment 1, but on devices with iOS 14.6, 14.7.1, and 17.7, the installation was successful, but when I tried to open the app, the following error message appeared: “XXXXX” needs to be updated To run this app on this version of iOS, the developer needs to update the app. Additionally, in environment 2, I’m unable to archive the app. Is it possible to create a working app by simply switching from ADEP to AdHoc without making any other changes to the environment?
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Feb ’25
Missing Developer Kit for build 22H417
I cannot find this specific KDK for my build 22H417. I need help locating and downloading this Developer Kit. Error Domain=KMErrorDomain Code=34 "Missing Developer Kit: As of macOS 13.0, you will need to install a KDK matching your build 22H417 to rebuild kernel collections." UserInfo={NSLocalizedDescription=Missing Developer Kit: As of macOS 13.0, you will need to install a KDK matching your build 22H417 to rebuild kernel collections.} I
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Feb ’25
C compilation problem
Hi Would someone happen to know how to solve the problem when installing Concorde.jl in julia: (@v1.11) pkg> add Concorde Resolving package versions... No Changes to ~/.julia/environments/v1.11/Project.toml No Changes to ~/.julia/environments/v1.11/Manifest.toml Precompiling project... ✗ Concorde 0 dependencies successfully precompiled in 2 seconds. 238 already precompiled. 1 dependency errored. For a report of the errors see julia> err. To retry use pkg> precompile (@v1.11) pkg> build Concorde Building Concorde → ~/.julia/scratchspaces/44cfe95a-1eb2-52ea-b672-e2afdf69b78f/5d9f1b1a480235ffdd3c8ab8cab011aa9afe81af/build.log ERROR: Error building Concorde, showing the last 100 of log: x ./concorde/TOOLS/prob2tsp.c x ./concorde/TOOLS/showres.c ... x ./concorde/VERIFY/Makefile.in x ./concorde/README loading cache ./config.cache checking host system type... Invalid configuration darwin': machine darwin' not recognized checking for prespecified compiler options... no checking for gcc... (cached) gcc checking whether the C compiler (gcc -fPIC -O2 -g ) works... no configure: error: installation or configuration problem: C compiler cannot create executables. ERROR: LoadError: failed process: Process(bash -c "CFLAGS='-fPIC -O2 -g' ./configure --with-qsopt=/Users/poss/.julia/packages/Concorde/VRfqN/deps/qsopt --host=darwin", ProcessExited(1)) [1] It seems to be related to the M3 processor as I have the same error on another Mac with that processor, while the M2 I tried on could install the package properly. It is related to my C compiler, but the latter works, despite the error "checking whether the C compiler (gcc -fPIC -O2 -g ) works... no" poss@Mac-de-Michael ~ % gcc --version Apple clang version 16.0.0 (clang-1600.0.26.6) Target: arm64-apple-darwin24.1.0 Thread model: posix InstalledDir: /Library/Developer/CommandLineTools/usr/bin poss@Mac-de-Michael ~ % gcc -fPIC -O2 -g test.c Best, Michaël.
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Feb ’25
XCTEST a bit trouble on not seeing the statusbar
Hi, I am working on an agent app. The app has a menubarextra. var body: some Scene { MenuBarExtra( "menubarextra", systemImage: "star") { Button("Item 1") { } Button("Item 2") { } Button("Item 3") { } } } I am going to write xctest to click on the icon i created and want to click on the menu next. func testExample() throws { // UI tests must launch the application that they test. let app = XCUIApplication() app.launch() let menuBarsQuery = XCUIApplication().menuBars let favouriteStatusItem = menuBarsQuery.statusItems["Favourite"] favouriteStatusItem.click() menuBarsQuery.menuItems["Item 1"].click() // Use XCTAssert and related functions to verify your tests produce the correct results. } There is a small problem. When the app is not a agent app, the app will start with with its own menu bar. If i am currently on fullscreen, it will swap to the desktop and the menubar will be showing the app's menu bar. In this case, I can see the menubarextra. The test will pass then. When it is in agent app, the above behaviour will not happen. Once I run the test with fullscreen mode of xcode, my screen will still stay on xcode and the statusbar will not be showing. Then the test will response error: -[swiftuitestUITests.MenubarExtraTests testExample] : Element StatusItem, {{1080.0, 6.5}, {34.5, 24.0}}, title: 'Favourite' is not hittable The only solution I can found at the moment is to leave fullscreen first, then run the test. In xctest, is there any way to force the statusbar to show first? Thank you!
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368
Feb ’25
Xcode asset validation failed
Hi all, First time trying to upload a game to the App Store, having some trouble with it. I have managed to build my Unity Project and get it onto Xcode, but when I click "distribute app" it is giving me this error. Asset validation failed, Invalid Bundle. The bundle at (app name).app/Frameworks/UnityFramework.framework' contains disallowed file 'Frameworks'. Xcode version 16.2 Unity editor version 2022.3.30f1 Anyone know how to get past this? Many thanks!
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368
Feb ’25
Swift Playground does not detect errors in some conditions
Thanks for the upgrade, the new project selection screen is nice and I’m happy that the SDK has been updated. But I notices some issues Since update to 4.6 In an app project, if one of the file contains an error and I select another file. The error is not reported and the upper icon shows a checked mark as if the project contains no compilation errors. Also, if I’m on the file that contains the error the upper icon turn in red (that is ok) but if I press the icon then the error message, the editor does not jump to the error It was working fine on the previous version (I use it on a iPad pro (A12Z) with the latest iPad OS version)
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Feb ’25
Swift Playgrounds 4.6.1 Removes Subscription Feeds
I use Swift Playgrounds on iPad to run an intro to programming class with high school students. I've created some custom playground books based on Apple's guides to provide some simple sandboxes to learn basic coding. Students simply click a button on my website, which downloads my playground books so students can easily create new sandboxes. With Swift Playgrounds 4.6.1 on both Mac and iPad, clicking the link only opens Swift Playgrounds and does not download my playground books! There used to be an "Add a Subscription URL" button, but it is no longer present on the Learn to Code page or anywhere else in the app that I can find: Is it intentional that this functionality is removed? Playground Books still appear to work, and documentation for subscription feeds is still available. I start another session with my students next Monday, so I need to know as soon as possible whether I need to plan to work around this myself. Thanks, Mark Schmidt
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Feb ’25
Xcode quit working
When I try to open Xcode, it tries to open the previous windows and load up the project I was last working on, but I can’t create a new project without opening Xcode, and I can’t do that; it just quits and gives me an Xcode quit unexpectedly, and it still happens when I download earlier versions of Xcode from the Apple developer website and the latest from the App Store, and I even when in Finder and tried to open my project that way, and it just does the same thing. I have tried everything, and I mean everything. I even reinstalled macOS, and it worked for a minute until it tried to open my project and then quit again and is doing the same thing.
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Feb ’25