error: unable to open dependencies file

[sger]

Description

Hello,

I'm not sure if this related to swift or spm but by using the latest beta 6 of Xcode 16 with swift 5 produces the following error:

error: unable to open dependencies file (/Users/user/Library/Developer/Xcode/DerivedData/MyProject-cgglnsxtnpiyjcazixtikurdbcqd/Build/Intermediates.noindex/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/arm64/MyProject-master-emit-module.d) (in target 'MyProject' from project 'MyProject')

By switching compilation mode to whole module instead of incremental project builds correctly.

Reproduction

error: unable to open dependencies file (/Users/user/Library/Developer/Xcode/DerivedData/MyProject-cgglnsxtnpiyjcazixtikurdbcqd/Build/Intermediates.noindex/MyProject.build/Debug-iphonesimulator/MyProject.build/Objects-normal/arm64/MyProject-master-emit-module.d) (in target 'MyProject' from project 'MyProject')

Expected behavior

Project should be with incremental compilation mode.

Environment

swift-driver version: 1.115 Apple Swift version 6.0 (swiftlang-6.0.0.9.10 clang-1600.0.26.2)
Target: arm64-apple-macosx14.0

Additional information

No response

[sananthanarayan]

Have you tried clearing derived data. This is the steps to do that:

• Go to Xcode > Settings > Locations > Click on the arrow next to “Derived Data”.
• Delete the folder associated with your project and try building again.

Otherwise try switching to whole model compilation temporarily to see if that resolves it using these settings:

• In Xcode, go to Build Settings > Swift Compiler - Code Generation.
• Set Compilation Mode to Whole Module for now.

Try manually deleting Build Artifacts or Check Swift Package manager dependencies (if this is a scenario)

Run this command to check file permissions:
sudo chmod -R 755 ~/Library/Developer/Xcode/DerivedData

Keep an eye on Xcode beta update to see if it resolves the issue

[sger]

Thanks @sananthanarayan I have tried all the things that you mentioned for the moment only whole module works.

[pranabsatyal]

Hello,

I’m encountering a similar issue in XCode that started after updating to Xcode version 16.2. The error message I receive is as follows:

error: unable to open dependencies file (/Users/user/Library/Developer/Xcode/DerivedData/MyProject-cwpcmnebzjpgkzcuoauxlaeiqrsg/Build/Intermediates.noindex/MyProject.build/Debug-iphoneos/MyProject.build/Objects-normal/arm64/MyProject-master.d) (in target 'MyProject' from project 'MyProject')

This problem didn’t occur with XCode 16.1; the project was building successfully before the update. However, even reverting to XCode 16.1 now doesn’t resolve the issue anymore.

Here’s what I’ve tried so far, without success:

1. Switched the compilation mode to “Whole Module”
2. Cleaned the build folder
3. Cleared Derived Data
4. Deleted XCode 16.2, reinstalled XCode 16.1

Has anyone else experienced this issue?

Thank you in advance for any suggestions!