Compilation fails on Swift 5.5 [known issue until Xcode ships with macOS 12 SDK]

[apple]

Compilation fails on Swift 5.5 [known issue until Xcode ships with macOS 12 SDK]

[ktoso]

I'm assuming you got that Swift from the Xcode 12 RC -- it is known to not be working as it includes the "old" macOS 11 SDK which does not have concurrency in it.

Long story short: This is an issue with Xcode and the SDK it ships. It couldn't ship macOS 12 SDK since macOS 12 isn't "released" yet. There will be a new Xcode with the macOS 12 SDK at some point, ad that point it things will actually work as they should.

The workaround is: use Beta Xcode 12 builds. One could hack around with nightly snapshots but we don't recommend that.

More information here: swift-server/swift-service-lifecycle#110 (comment)

[pokryfka]

Its Swift 5.5 shipped with Xcode 13 installed via App Store.

Thank you for the link and explanation, much appreciated and helpful.

I dont want to install another Xcode which is super heavy but will try installing another Swift version and test compilation on Linux via Docker.

Looking forward to the Xcode with the macOS 12 SDK!

[ktoso]

Right that's (sadly) expected expected with that Xcode then. Too bad with the timing this year but that's how it ended up as.

Thanks for checking in! We're also looking forward to the Xcode with the newest SDK :)

[pokryfka]

I think this one can be closed, the package builds without problems using Xcode 13.1

[ktoso]

Thanks for the ping! Yep that's right.

Now we have the same adventures kind of with 5.6 needing projects 😆 😭 but thankfully not this one.