Local package dependency limitation?

I am trying to do the following in Xcode 13.3:

  • Create a new iOS project called Brain
  • Add a new local package called Cortex
  • In settings for the Brain target, under build phases add Cortex to dependencies and linked libraries.
  • Use Cortex API from within Brain and run.

At this point everything is okay. But now I try to add a dependency to Cortex by adding to Package.swift

.package(url: "https://github.com/apple/swift-collections.git", from: "1.0.2")  // 

At this point I get the warning:

dependency 'swift-collections' is not used by any target

Also, I don't seem to be able to import / use any API from Swift Collections from inside Cortex. (Auto complete works though.)

Is this expected behavior? What am I doing wrong? Any suggested workarounds?

Sorry for the basic question. Thanks for your help and insights.

You need to ensure that your Brain target actually depends on one of the swift-collections products, e.g.:

      name: "Brain",
      dependencies: [
        .product(name: "Collections", package: "swift-collections")
1 Like

Thanks for getting me unstuck! (In my case, I wanted the Cortex local package target to be able to use OrderedCollections but your hint was enough. Interestingly, the Xcode UI lets you select the Brain target but not the Cortex local package target.). Thanks again.