Swift Atomics can't be used in Swift Playgrounds.app

[wtholliday]

Swift Atomics can't be used in Swift Playgrounds.app because of a C target. We would like to use Swift Atomics in AudioKit (https://github.com/audiokit/audiokit) and we support Swift Playgrounds.

(Note that this bug is distinct from #55)

Information

• Package version: 1.0.3
• Platform version: 13.1 (22C65)
• Swift version: swift-driver version: 1.62.15 Apple Swift version 5.7.2 (swiftlang-5.7.2.135.5 clang-1400.0.29.51)
  Target: x86_64-apple-macosx13.0

Checklist

• If possible, I've reproduced the issue using the main branch of this package.
• I've searched for existing reports of the same issue.

Steps to Reproduce

1. Download Swift Playgrounds from App Store
2. Create a new app
3. File -> Add Package
4. Enter https://github.com/apple/swift-atomics
5. Click the play button

Expected behavior

Swift Atomics can be used in Swift Playgrounds.

Actual behavior

Compilation fails because Swift Atomics uses a C target.

[rvsrvs]

actually, i think addressing #55 would fix this as well, but that entails changes that are unlikely to happen.

[lorentey]

Getting rid of the C module with something along the lines of #74 would likely get rid of these issues. However, this will require some Swift compiler & stdlib work, so it will take time.