Decoding PBXProj fails on Linux swift 6 runner

[swwol]

When using tool which uses XcodeProj internally on a swift 6 linux runner, getting errors decoding - saying this platform does not support openstep format.

This seems to be because linux version of swift 6 does not support OpenStep format used by .pbxproj files

[fortmarek]

Hey!

It'd be great if you could provide us with reproduction steps – without it, it's difficult for us to provide a fix.

[L1MeN9Yu]

Same here : "The openStep format is unsupported on this platform."

[marcosgriselli]

Related yonaskolb/XcodeGen#1517
Haven't reviewed if the Swift fix landed in new releases but I assume it hasn't if people are running into it

[waltflanagan]

This appears to be fixed in Swift-Foundation but wont be released until Swift 6.1 is out: swiftlang/swift-foundation#1002