"Upload Debug Symbols to Sentry" build phase causes cycle when project has an embedded app extension #5654
Description
What React Native libraries do you use?
Expo Application Services (EAS)
Are you using sentry.io or on-premise?
sentry.io (SaS)
@sentry/react-native SDK Version
7.12.0
How does your development environment look like?
System:
OS: macOS 26.2
CPU: (14) arm64 Apple M4 Pro
Memory: 137.63 MB / 24.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 25.6.0
path: /opt/homebrew/bin/node
npm:
version: 11.8.0
path: /opt/homebrew/bin/npm
Watchman:
version: 2026.01.12.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /opt/homebrew/bin/pod
SDKs:
iOS SDK:
Platforms:
- iOS 26.2
IDEs:
Xcode:
version: 26.2/17C52
path: /usr/bin/xcodebuild
npmPackages:
react: 19.1.0
react-native: 0.81.5
expo: ~54.0.0
iOS:
hermesEnabled: true
newArchEnabled: true
Sentry.init()
Sentry.init({
dsn: '...',
environment: 'n-redacted-production',
tracesSampleRate: 0.2,
sendDefaultPii: false,
enableAutoSessionTracking: true,
attachStacktrace: true,
});Steps to Reproduce
- Create an Expo project with
@sentry/react-native/expoin the plugins array - Add an app extension target that gets embedded into the main app — in our case this is a
NotificationServiceextension for Customer.io rich push notifications - Run
expo prebuild --clean - Run
expo run:ios
The Sentry Expo plugin adds an "Upload Debug Symbols to Sentry" build phase with these inputPaths:
$(DWARF_DSYM_FOLDER_PATH)/$(DWARF_DSYM_FILE_NAME)/Contents/Resources/DWARF/$(PRODUCT_NAME)
$(DWARF_DSYM_FOLDER_PATH)/$(DWARF_DSYM_FILE_NAME)
...and empty outputPaths. This was added in #5617 to fix a race condition on EAS builds.
The problem is that when the project also embeds an app extension (via a "Copy Files" build phase), Xcode's dependency analysis creates a cycle:
→ Target 'MyApp' has copy command from 'NotificationService.appex' to 'MyApp.app/PlugIns/NotificationService.appex'
○ That command depends on command in Target 'MyApp': script phase "Upload Debug Symbols to Sentry"
○ Target 'MyApp' has a command with output 'MyApp.app.dSYM'
○ Target 'MyApp' has process command with output 'MyApp.app/Info.plist'
○ Target 'MyApp' has copy command from 'NotificationService.appex' to 'MyApp.app/PlugIns/NotificationService.appex'
Essentially: copy extension → Sentry upload phase (ordering) → dSYM generation (inputPaths) → linking → app assembly → copy extension → cycle.
Expected Result
The project builds successfully. The "Upload Debug Symbols to Sentry" build phase should not interfere with Xcode's dependency graph for embedding app extensions.
Actual Result
Build fails with:
error: Cycle inside MyApp; building could produce unreliable results.
Full cycle trace from xcodebuild.log:
Cycle details:
→ Target 'N-REDACTED' has copy command from '.../NotificationService.appex' to '.../N-REDACTED.app/PlugIns/NotificationService.appex'
○ That command depends on command in Target 'N-REDACTED': script phase "Upload Debug Symbols to Sentry"
○ Target 'N-REDACTED' has a command with output '.../N-REDACTED.app.dSYM'
○ Target 'N-REDACTED' has process command with output '.../N-REDACTED.app/Info.plist'
○ Target 'N-REDACTED' has copy command from '.../NotificationService.appex' to '.../N-REDACTED.app/PlugIns/NotificationService.appex'
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