Xcode 27 refuses to build common Swift Packages for watchOS, such as swift-algorithms or swift-collections.
... 'WATCHOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 27.0.x.
The error disappears by explicitly declaring in the SPM manifest "platforms: [.watchOS(.v9)]". (Patching the "SwiftStdlib" availabilities in swift-collections is insufficient.)
Is there a better workaround than mirroring our whole SPM graph to declare the platform minimum?
Our projects' minimums are correctly set at 11 or 26. (Also happens in the hello world Xcode 27 watchOS only project.)
FB23037701 ref: https://developer.apple.com/forums/thread/829540
I don't think there's any way you can work around this. But it looks like it was just addressed here: https://github.com/swiftlang/swift-package-manager/pull/10188
