Missing SPM traits in tuist generated xcodeproject from Registry Style

What happened?

Missing the Swift Custom Flags in tuist generated xcodeproject with –replace-scm-with-registry on library https://github.com/pointfreeco/swift-dependencies

How do we reproduce it?

1. Use tuist verson 4.203.1
2. Add the dependency https://github.com/pointfreeco/swift-dependencies under Tuist/Package.swift
3. add it as git url (remoteSourceControl) style with version 1.14.1
4. add installOptions in Tuist.swift with input “–replace-scm-with-registry”
5. Use Xcode26.5 or Xcode27beta
6. For my case I have my own swift registry server provided by JFrog artifacts. I donot try tuist registry server(It should be same I think)
7. tuist install&&tuist generate with a demo Tuist managed project
8. check the swift-dependencies project generated by tuist
9. Check Swift Compiler-Custom Flags of the Build Settings tab from Dependencies target
10. The Flags Clocks CombineSchedulers etc are not ther
11. But with git url as dependency reference, the Flags will be there with same version Xcode and tuist
12. the Key part from library swift-dependencies Package.swift (If I remove Package.swift and rename Package@Swift-6.0.swift as Package.swift It will work also) https://github.com/pointfreeco/swift-dependencies traits: [ “Clocks”, “CombineSchedulers”, “Foundation”, “FoundationNetworking”, .default(enabledTraits: [ “Clocks”, “CombineSchedulers”, “Foundation”, “FoundationNetworking”, ]), ],

Error log

Xcode build error without enough Swift Custom Flags

macOS version

Tahoe 26.8

Tuist version

4.203.1

Xcode version

27.0 beta4