This is a bug in Xcode. If you delete the app, the command line tools work without complaint.
sudo xcode-select -s /Library/Developer/CommandLineTools
Either a new xcodebuild
is needed to not look for those two extensions in the plug in or the plug in needs them added.
I have not filed a feedback, but the delay is quite aggravating. When I need Xcode again, I will try removing the watch simulator and/or downloading it completelyI will try removing the watch simulator and/or downloading it completely. Perhaps there’s a workaround I have missed or I didn’t type all the above commands correctly.