[SR-13553] SwiftSyntax doesn't work in Xcode 12 with Swift 5.3.

[swift-ci]

Previous ID	SR-13553
Radar	rdar://problem/68993163
Original Reporter	fdiaz (JIRA User)
Type	Bug
Status	Resolved
Resolution	Done

Additional Detail from JIRA

Votes	2
Component/s	SwiftSyntax
Labels	Bug
Assignee	None
Priority	Medium

md5: b84a172e4242e4b9a5224069747cc885

Issue Description:

Xcode 12 just went GM today and iOS 14 is scheduled to be released tomorrow but we don't have a Swift 5.3 version available in SwiftSyntax to be able to update the libraries that use it in Xcode 12.

I've tried using the last available release to date https://github.com/apple/swift-syntax/releases/tag/swift-DEVELOPMENT-SNAPSHOT-2020-09-11-a and the last Xcode available (Version 12.0 (12A7208)) and I'm getting

> stderr: Error: The loaded '_InternalSwiftSyntaxParser' library is from a toolchain that is not compatible with this version of SwiftSyntax

when running SwiftSyntax.

[swift-ci]

Comment by Francisco Diaz (JIRA)

Update: Using `releases/5.3` worked for me, but it'd be amazing to have an official version released now that Xcode is GM

[typesanitizer]

@swift-ci create

[swift-ci]

Comment by Francisco Diaz (JIRA)

There's a SwiftSytnax version now for Swift 5.3!