Well. both use LLDB, which is open source, but Xcode and Elements boathouse their own “copy” of it, of course. Xcode’s version of LLDB has been updated to support arm64e, but those changes are not in the open LLDB code yet, so we don’t see them yet. We need to either wait for that or work out what fails and fix it ourself (which is what we’re working on right now).
For now, you can develop for XS, you just cannot debug. You can debug on the SE and in the Simulator, and you can use “Deploy” w/ manual launch to test on XS. Not super convenient, but hopefully not a total showstopper until we’ve figured things out?
Tomorrow’s build will fix the crash and “cleanly” fail sating that arm64e isn’t supported yet, and hopefully we’ll get debugging working soon (but not in time for tomorrow’s build, I’m afraid :().