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Reply to libswiftCompatibilitySpan.dylib missing in XCode 26.3
Cool. I consider this to be a problem with Xcode’s build system, but it’s an understandable one. Xcode knows that your tool depends on this library — because it adds an import of it — but, being a command-line tool, it doesn’t have anywhere to embed the library. It should embed it in the container app, but it’s clearly not doing that. I think it’s worth filing a bug against Xcode about that. And if you do, please post your bug number, just for the record. As to a workaround, there’s a couple of ways to approach that. The first is the obvious one we’ve been discussing here: Add a dummy use of Subprocess within your app. Xcode will embed libswiftCompatibilitySpan.dylib, because it knows that your app needs it, and your tool can pick it up from there The other option is to embed the library explicitly. This is complicated by the fact that the library exists within a toolchain, so it’s not clear how to reference it [1]. For the moment I recommend that you go with the first opti
Topic: App & System Services SubTopic: Core OS Tags:
3w
Reply to macOS App Distributed via ZIP Cannot Open — Possible Code Signing / Notarization Issue
[quote='818269021, anonymousdev332299, /thread/818269, /profile/anonymousdev332299'] is both a Developer ID certificate and Apple notarization required on current macOS versions? [/quote] Yes. Developer ID signing has been required for a long time (10.8?). Notarisation for apps has been required since 10.14. [quote='818269021, anonymousdev332299, /thread/818269, /profile/anonymousdev332299'] Is [ditto] necessary to properly preserve the app bundle structure and extended attributes? [/quote] Yes and no. If you compress with the Finder then extended attributes get sequestered, which is not good. See Extended Attributes and Zip Archives. The ditto tool doesn’t do that by default. However, in an ideal world this wouldn’t matter because your code signature should not depend on extended attributes. If you find that it does, that suggests your have a bundle structure problem. We talk about this more in TN3126 Inside Code Signing: Hashes and Placing content in a bundle. As to what’s actually happening here, it’s hard
Topic: Code Signing SubTopic: General Tags:
3w
Transporter rejects first Apple-hosted Managed Background Assets pack with `-19243` / `400 invalid values`
We are trying to upload the first Apple-hosted Managed Background Assets pack for our macOS app, but Transporter rejects the asset pack ID during upload. App details: App name: DistillApp Apple ID: 6760288806 Bundle ID: cn.rkbkosp.DistillApp Asset pack ID: distill.pipeline.zh-baseline Platform: macOS Transporter: 1.4 Xcode: 26.2 macOS: 26.3.1 What we see in Transporter: Apple ID: 6760288806 App Name: DistillApp App Bundle ID: cn.rkbkosp.DistillApp No background assets found. And when we try to upload the first asset pack, Transporter fails with: 获取 Apple ID “6760288806”的资源包列表失败。 (-19243) There is an error with a URL parameter (400) Found invalid values: distill.pipeline.zh-baseline What we have already confirmed locally: The app resolves correctly in Transporter, so the Apple ID and bundle ID appear to be correct. The app Info.plist includes: BAHasManagedAssetPacks = YES BAUsesAppleHosting = YES BAAppGroupID = 8U6DAJ62JT.group.cn.rkbkosp.DistillApp.assets The asset pack manifest uses: assetPackID = d
Topic: App Store Distribution & Marketing SubTopic: App Store Connect Tags:
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The xcode 26.3 project fails to compile after updating
0 0x10109152c __assert_rtn + 252 1 0x101006054 void std::__1::__introsort(ld::Atom const**, ld::Atom const**, ld::AliasAddressOrderer&, std::__1::iterator_traits::difference_type, bool) + 0 2 0x1010059a4 ld::LayoutLinkedImage::assignAtomOffsetsInSection(ld::SectionLayout&, unsigned int, bool) + 680 3 0x10100a724 void dispatchForEach(std::__1::span, unsigned long, ld::LayoutLinkedImage::sortAtomsWithinSections()::$_0)::'lambda'(unsigned long)::operator()(unsigned long) const + 7852 4 0x180818aec _dispatch_client_callout2 + 16 5 0x1808137f8 _dispatch_apply_invoke3 + 336 6 0x180818ad4 _dispatch_client_callout + 16 7 0x180801a60 _dispatch_once_callout + 32 8 0x180812938 _dispatch_apply_invoke + 252 9 0x180818ad4 _dispatch_client_callout + 16 10 0x1808359dc _dispatch_channel_invoke.cold.5 + 32 11 0x18081113c _dispatch_root_queue_drain + 736 12 0x180811784 _dispatch_worker_thread2 + 180 13 0x1809b7e10 _pthread_wqthread + 232 ld snapshot written at /tmp/AIChatDoctor-2026-03-10-150254.ld-snapshot ld: Assertio
Topic: Developer Tools & Services SubTopic: Xcode
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No identity found: Command CodeSign failed with a nonzero exit code
Hello! I'm new to xcode and am developing an iOS app. I hit the following error when build my app: MY_SHA no identity found Command CodeSign failed with a nonzero exit code I have generated my certificate through xcode. I can see the Certificate and the private key in Keychain -> login. But it's not that private key is under the Certificate. They are listed in parallel. The certificate appears in Certificate tab but not in My Certificate Tab. Would that matter? security find-certificate -a -Z | grep -A1 Apple Development Gives me the certificate. But security find-identity -v -p codesigning give 0 valid identity found. Could you help me figure out what could be the reason for this? I've been stuck for several days now. Thank you so much!
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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Reply to Is it possible to download or copy the iOS SDK for Xcode 26.1 using command-line tools? If so, how?
Thanks Ed, this did work. The confusion for me comes from the output & results of the downloadPlatform command above - the export file is automatically named iphonesimulator_26.1_23B86.dmg, and there's no mention in the output that the SDK Platform Support (ver 23B77) component has also been exported. There also wasn't anything in the output when running importPlatform to indicate that this component was being imported, however it did show up correctly in Xcode afterwards when viewing Settings -> Components. Perhaps some indication in the output from both of these commands that the platform support component is included would avoid this confusion?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
3w
iPhone 17 Pro on iOS 26.3 stays unavailable in xcrun devicectl list devices even with Xcode 26.4 beta 2
I am unable to use my iPhone 17 Pro as a run destination in Xcode. The device appears at a low level, but CoreDevice / devicectl keeps reporting it as unavailable. Environment • Mac mini (Apple Silicon) • macOS 26.3 (Build 25D125) • iPhone 17 Pro • iOS 26.3 • Xcode 26.3 (Build 17C529) • Xcode 26.4 beta 2 (Build 17E5170d) Symptoms • The iPhone appears in Finder • On the iPhone, I tapped “Trust This Computer” • Developer Mode is enabled • Apple ID is added in Xcode Accounts • Team is configured in Signing & Capabilities • iOS Platform Support is installed • The device still does not become available as a run destination • Devices and Simulators does not show it in a usable state • xcrun devicectl list devices still shows unavailable Output of xcrun devicectl list devices Failed to load provisioning paramter list due to error: Error Domain=com.apple.dt.CoreDeviceError Code=1002 No provider was found. UserInfo={NSLocalizedDescription=No provider was found.}. devicectl manag
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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DeviceActivityReportExtension sandbox blocks all output channels — how to export resolved Application.bundleIdentifier?
DeviceActivityReportExtension sandbox blocks all output channels — how to export resolved Application.bundleIdentifier? Application.bundleIdentifier only resolves to a non-nil value inside a DeviceActivityReportExtension (ExtensionKit/XPC). The main app and DeviceActivityMonitor extension always return nil. However, the Report Extension's sandbox silently blocks every output channel I've tested: UserDefaults (App Group): Reads succeed, writes silently dropped File writes (App Group container): Fail silently or throw HTTP requests: Network blocked entirely Local Notifications: Couldn't communicate with a helper application UIPasteboard: Writes silently fail iCloud KVS: synchronize() returns false Both targets share the same com.apple.security.application-groups entitlement and group identifier. The main app reads and writes to the shared container normally — only the extension's writes fail. This means resolved bundle identifiers can only be rendered in the extension's own SwiftUI view and cannot be communicat
Topic: App & System Services SubTopic: General Tags:
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3w
File Export from iOS - eventually import too
iOS 15 - iOS 26.x, SwiftUI, Xcode 26.1.1 (rewritten without links) I’m attempting to add the capability to export a file from CoreData. Since ShareLink requires iOS16+, I found an article showing how to create a UIKit wrapper for 'UIActivityViewController' This does work, but I end up with multiple files instead of one. How do I merge this into one file? Note: I don’t think I want to write to the app’s document directory – rather I’d like to allow the user to export to iCloud. Eventually, I’d like to share a list of dates with descriptions and if someone puts a sensitive date in there – I don’t want it to be left in a directory. I would include a warning that the file that they export needs to be handled with care if there are any sensitive dates. Some might consider birthdays as private information, right? I'd also like to be able to name the file - so far when the share sheet comes up, I select Save to Files and it uses a default name of text.txt My next step is to be able to import a CSV file (rou
Topic: UI Frameworks SubTopic: SwiftUI
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3w
Reply to libswiftCompatibilitySpan.dylib missing in XCode 26.3
Cool. I consider this to be a problem with Xcode’s build system, but it’s an understandable one. Xcode knows that your tool depends on this library — because it adds an import of it — but, being a command-line tool, it doesn’t have anywhere to embed the library. It should embed it in the container app, but it’s clearly not doing that. I think it’s worth filing a bug against Xcode about that. And if you do, please post your bug number, just for the record. As to a workaround, there’s a couple of ways to approach that. The first is the obvious one we’ve been discussing here: Add a dummy use of Subprocess within your app. Xcode will embed libswiftCompatibilitySpan.dylib, because it knows that your app needs it, and your tool can pick it up from there The other option is to embed the library explicitly. This is complicated by the fact that the library exists within a toolchain, so it’s not clear how to reference it [1]. For the moment I recommend that you go with the first opti
Topic: App & System Services SubTopic: Core OS Tags:
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3w
Reply to macOS App Distributed via ZIP Cannot Open — Possible Code Signing / Notarization Issue
[quote='818269021, anonymousdev332299, /thread/818269, /profile/anonymousdev332299'] is both a Developer ID certificate and Apple notarization required on current macOS versions? [/quote] Yes. Developer ID signing has been required for a long time (10.8?). Notarisation for apps has been required since 10.14. [quote='818269021, anonymousdev332299, /thread/818269, /profile/anonymousdev332299'] Is [ditto] necessary to properly preserve the app bundle structure and extended attributes? [/quote] Yes and no. If you compress with the Finder then extended attributes get sequestered, which is not good. See Extended Attributes and Zip Archives. The ditto tool doesn’t do that by default. However, in an ideal world this wouldn’t matter because your code signature should not depend on extended attributes. If you find that it does, that suggests your have a bundle structure problem. We talk about this more in TN3126 Inside Code Signing: Hashes and Placing content in a bundle. As to what’s actually happening here, it’s hard
Topic: Code Signing SubTopic: General Tags:
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3w
Use WhatToTest..txt from Testflight folder from xcode upload
While WhatToTest..txt was being used in xcode cloud. I wish this feature should just being adopted to functioned from XCode archive and upload to set initial release note from the build pipeline directly from xcode in machine
Topic: App Store Distribution & Marketing SubTopic: TestFlight Tags:
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84
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3w
Transporter rejects first Apple-hosted Managed Background Assets pack with `-19243` / `400 invalid values`
We are trying to upload the first Apple-hosted Managed Background Assets pack for our macOS app, but Transporter rejects the asset pack ID during upload. App details: App name: DistillApp Apple ID: 6760288806 Bundle ID: cn.rkbkosp.DistillApp Asset pack ID: distill.pipeline.zh-baseline Platform: macOS Transporter: 1.4 Xcode: 26.2 macOS: 26.3.1 What we see in Transporter: Apple ID: 6760288806 App Name: DistillApp App Bundle ID: cn.rkbkosp.DistillApp No background assets found. And when we try to upload the first asset pack, Transporter fails with: 获取 Apple ID “6760288806”的资源包列表失败。 (-19243) There is an error with a URL parameter (400) Found invalid values: distill.pipeline.zh-baseline What we have already confirmed locally: The app resolves correctly in Transporter, so the Apple ID and bundle ID appear to be correct. The app Info.plist includes: BAHasManagedAssetPacks = YES BAUsesAppleHosting = YES BAAppGroupID = 8U6DAJ62JT.group.cn.rkbkosp.DistillApp.assets The asset pack manifest uses: assetPackID = d
Topic: App Store Distribution & Marketing SubTopic: App Store Connect Tags:
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37
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3w
The xcode 26.3 project fails to compile after updating
0 0x10109152c __assert_rtn + 252 1 0x101006054 void std::__1::__introsort(ld::Atom const**, ld::Atom const**, ld::AliasAddressOrderer&, std::__1::iterator_traits::difference_type, bool) + 0 2 0x1010059a4 ld::LayoutLinkedImage::assignAtomOffsetsInSection(ld::SectionLayout&, unsigned int, bool) + 680 3 0x10100a724 void dispatchForEach(std::__1::span, unsigned long, ld::LayoutLinkedImage::sortAtomsWithinSections()::$_0)::'lambda'(unsigned long)::operator()(unsigned long) const + 7852 4 0x180818aec _dispatch_client_callout2 + 16 5 0x1808137f8 _dispatch_apply_invoke3 + 336 6 0x180818ad4 _dispatch_client_callout + 16 7 0x180801a60 _dispatch_once_callout + 32 8 0x180812938 _dispatch_apply_invoke + 252 9 0x180818ad4 _dispatch_client_callout + 16 10 0x1808359dc _dispatch_channel_invoke.cold.5 + 32 11 0x18081113c _dispatch_root_queue_drain + 736 12 0x180811784 _dispatch_worker_thread2 + 180 13 0x1809b7e10 _pthread_wqthread + 232 ld snapshot written at /tmp/AIChatDoctor-2026-03-10-150254.ld-snapshot ld: Assertio
Topic: Developer Tools & Services SubTopic: Xcode
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1
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101
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3w
Reply to Xcode 26 fails to load SPM packages
I have the same problem with Xcode 26.3 and Xcode 26.4 (Beta 3).
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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Reply to Xcode hangs on git network operations
Also have problem with git fetch from Xcode, in terminal all work good.
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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3w
No identity found: Command CodeSign failed with a nonzero exit code
Hello! I'm new to xcode and am developing an iOS app. I hit the following error when build my app: MY_SHA no identity found Command CodeSign failed with a nonzero exit code I have generated my certificate through xcode. I can see the Certificate and the private key in Keychain -> login. But it's not that private key is under the Certificate. They are listed in parallel. The certificate appears in Certificate tab but not in My Certificate Tab. Would that matter? security find-certificate -a -Z | grep -A1 Apple Development Gives me the certificate. But security find-identity -v -p codesigning give 0 valid identity found. Could you help me figure out what could be the reason for this? I've been stuck for several days now. Thank you so much!
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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0
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0
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58
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3w
Reply to Is it possible to download or copy the iOS SDK for Xcode 26.1 using command-line tools? If so, how?
Thanks Ed, this did work. The confusion for me comes from the output & results of the downloadPlatform command above - the export file is automatically named iphonesimulator_26.1_23B86.dmg, and there's no mention in the output that the SDK Platform Support (ver 23B77) component has also been exported. There also wasn't anything in the output when running importPlatform to indicate that this component was being imported, however it did show up correctly in Xcode afterwards when viewing Settings -> Components. Perhaps some indication in the output from both of these commands that the platform support component is included would avoid this confusion?
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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3w
Using iOS App on iPhone 5s with iOS 12.5.8
Objective: Downloading and running an old Swift iOS App on iPhone 5s with iOS 12.5.8. Development System and Tools: Apple macBook, M4 Pro, running macOS Tahoe 26.3.1 (25D2128). Xcode Version 26.3 (17C529)
Topic: Developer Tools & Services SubTopic: General
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1
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61
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3w
iPhone 17 Pro on iOS 26.3 stays unavailable in xcrun devicectl list devices even with Xcode 26.4 beta 2
I am unable to use my iPhone 17 Pro as a run destination in Xcode. The device appears at a low level, but CoreDevice / devicectl keeps reporting it as unavailable. Environment • Mac mini (Apple Silicon) • macOS 26.3 (Build 25D125) • iPhone 17 Pro • iOS 26.3 • Xcode 26.3 (Build 17C529) • Xcode 26.4 beta 2 (Build 17E5170d) Symptoms • The iPhone appears in Finder • On the iPhone, I tapped “Trust This Computer” • Developer Mode is enabled • Apple ID is added in Xcode Accounts • Team is configured in Signing & Capabilities • iOS Platform Support is installed • The device still does not become available as a run destination • Devices and Simulators does not show it in a usable state • xcrun devicectl list devices still shows unavailable Output of xcrun devicectl list devices Failed to load provisioning paramter list due to error: Error Domain=com.apple.dt.CoreDeviceError Code=1002 No provider was found. UserInfo={NSLocalizedDescription=No provider was found.}. devicectl manag
Topic: Developer Tools & Services SubTopic: Xcode Tags:
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13
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464
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3w
DeviceActivityReportExtension sandbox blocks all output channels — how to export resolved Application.bundleIdentifier?
DeviceActivityReportExtension sandbox blocks all output channels — how to export resolved Application.bundleIdentifier? Application.bundleIdentifier only resolves to a non-nil value inside a DeviceActivityReportExtension (ExtensionKit/XPC). The main app and DeviceActivityMonitor extension always return nil. However, the Report Extension's sandbox silently blocks every output channel I've tested: UserDefaults (App Group): Reads succeed, writes silently dropped File writes (App Group container): Fail silently or throw HTTP requests: Network blocked entirely Local Notifications: Couldn't communicate with a helper application UIPasteboard: Writes silently fail iCloud KVS: synchronize() returns false Both targets share the same com.apple.security.application-groups entitlement and group identifier. The main app reads and writes to the shared container normally — only the extension's writes fail. This means resolved bundle identifiers can only be rendered in the extension's own SwiftUI view and cannot be communicat
Topic: App & System Services SubTopic: General Tags:
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4
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181
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3w
Reply to Unable to install Metal toolchain through Xcode Cloud
Xcode Cloud has the Metal toolchain ready for use without any additional installation required. If you remove these commands from your ci_pre_xcodebuild.sh script, does your build succeed? — Ed Ford,  DTS Engineer
Topic: Developer Tools & Services SubTopic: Xcode Cloud Tags:
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3w
File Export from iOS - eventually import too
iOS 15 - iOS 26.x, SwiftUI, Xcode 26.1.1 (rewritten without links) I’m attempting to add the capability to export a file from CoreData. Since ShareLink requires iOS16+, I found an article showing how to create a UIKit wrapper for 'UIActivityViewController' This does work, but I end up with multiple files instead of one. How do I merge this into one file? Note: I don’t think I want to write to the app’s document directory – rather I’d like to allow the user to export to iCloud. Eventually, I’d like to share a list of dates with descriptions and if someone puts a sensitive date in there – I don’t want it to be left in a directory. I would include a warning that the file that they export needs to be handled with care if there are any sensitive dates. Some might consider birthdays as private information, right? I'd also like to be able to name the file - so far when the share sheet comes up, I select Save to Files and it uses a default name of text.txt My next step is to be able to import a CSV file (rou
Topic: UI Frameworks SubTopic: SwiftUI
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6
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320
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3w
Reply to Two errors in debug: com.apple.modelcatalog.catalog sync and nw_protocol_instance_set_output_handler
Hi! Could you please share your OS versions and Xcode versions so we can track down the source of these errors? Thanks so much!
Topic: Machine Learning & AI SubTopic: Foundation Models Tags:
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3w