Xcodeproj doesn't know about XCBuildConfiguration / baseConfigurationReferenceAnchor

[authiatr]

Hello 👋,

Since I migrated a project to Xcode 16 with the new folder project structure and I have the following error when I try to run a Slather command:

[!] Xcodeproj doesn't know about the following attributes {"baseConfigurationReferenceAnchor"=>"305E22322CAC3597003B2EC7", "baseConfigurationReferenceRelativePath"=>"GlobalSettings.xcconfig"} for the 'XCBuildConfiguration' isa.
▸ If this attribute was generated by Xcode please file an issue: [https://github.com/CocoaPods/Xcodeproj/issues/new](https://github.com/CocoaPods/Xcodeproj/issues/new%1B[0m)

This baseConfigurationReferenceAnchor and the XCBuildConfiguration are Xcode's standard attributes.

I made sure that the Slather plugin is up to date, and it seems to use your latest version:

slather (2.8.4)
      CFPropertyList (>= 2.2, < 4)
      activesupport
      clamp (~> 1.3)
      nokogiri (>= 1.14.3)
      xcodeproj (~> 1.25)

Do you have an idea what's wrong?

Thanks,
Robin

[authiatr]

EDIT 24/10/2024:

The issue is linked to the Xcode project folder structure: I tried rolling back the project structure to groups, and the problem was gone.
This new Xcode folder feature resolves many collaboration issues (e.g., merging conflicts in pbxproj, sorting the files alphabetically automatically), and I assume that the community will massively adopt it.

This Xcodeproj library is quite popular and well-adopted in the iOS open-source world.
I'm curious if the maintainers know about it and if they have already planned to manage these new attributes introduced in Xcode 16.

[authiatr]

I found out that the community is working on a PR to support Xcode 16. 🙌

I assume it will fix this problem.
I also found many duplicate issues related to the same problem.
I'm closing this one since the contributions are aware and actively working to solve it.