Background indexing doesn't index packages in edit mode

[adam-fowler]

Swift version

Apple Swift version 6.0.2 (swiftlang-6.0.2.1.2 clang-1600.0.26.4)

Platform

macOS 15

Editor

VS Code

Description

If I open a swift package and set one of its dependencies to be in edit mode the background indexing ignores this and still tries to index the project as if it is using the version of the dependency in .index-build.

Steps to Reproduce

• Open package with dependencies in VSCode
• Clone one of its dependencies in a separate folder
• Right click on dependency in package dependencies view, select "Use Local Version" and select your local clone of that dependency. This is the equivalent of running `swift package edit -path
• In main package right click on symbol from dependency and jump to definition
• Note you jump to version in .index-build and not the local version

This is most likely caused by the fact that the package edit commands edit the workspace-state.json file and these changes are not propagated to the .index-build folder.

Logging

No response

[ahoppen]

Synced to Apple’s issue tracker as rdar://141113619

[adam-fowler]

@ahoppen what are the chances this will get fixed for 6.1? This really breaks editing packages in VSCode

[ahoppen]

The fix for this would require a major architectural redesign of how SourceKit-LSP interacts with SwiftPM’s workspace state and integrates with SwiftPM’s build folder. It’s out-of-scope for 6.1.

[adam-fowler]

Ok is there going to be a way to disable background indexing because editing packages just doesn't work with it.

[ahoppen]

Yes, you can disable it via the SourceKit-LSP Configuration file and there’s also a setting in VS Code.