Problem is solved. Xcode is looking for an non-existent symlink. There is no "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.0.sdk". Instead, there is drwxr-xr-x 8 maurice staff 256 May 28 00:43 MacOSX.sdk lrwxr-xr-x 1 maurice staff 10 May 28 00:16 MacOSX13.3.sdk -> MacOSX.sdk lrwxr-xr-x 1 maurice staff 10 May 28 00:16 MacOSX13.sdk -> MacOSX.sdk When I manually added the symlink lrwxr-xr-x 1 maurice staff 10 May 28 00:44 MacOSX13.0.sdk -> MacOSX.sdk Everything started working again.

It's not that it trying to install an old version, but MacOS 13 SDK. The question is why it can't stop doing this.

Submitted. Thanks.

I think you misread my query.

I tried it two ways, let documentsURL = try fileManager.url(for: .downloadsDirectory, in: .userDomainMask, appropriateFor: nil, create: false) // and let path    = NSSearchPathForDirectoriesInDomains(.downloadsDirectory, .userDomainMask, true)[0] as String let documentsURL     = URL(fileURLWithPath: path)

I think I got it, I needed to add this let dest = documentsURL.resolvingSymlinksInPath() Thanks.