What an incredible bug! On Xcode 14.3.1 and, yes, encountering this error where I build, get to see my compile errors for a second or two, then have them helpfully disappear. Clearing Derived Data did not fix the issue for me.

I was able to get xcframework + simulator fat binary working. I needed to have an xcframework that supported simulator on both arm64 and x86_64 because I'm developing on an M1 and my CI provider wants x86_64 to run unit tests. (Oh, and having an xcframework that can be used to develop on Intel might come in handy at some point.) My steps: Build three frameworks (in my case, arm64, arm64-simulator, x86_64-simulator) Build xcframework with arm64 and arm64-simulator frameworks Use lipo to add x86_64-simulator binary to the arm64-simulator binary (which is inside my xcframework) That's it. I ended up modifying my xcframework's Info.plist file to document the fact that the second "library" was a fat binary (adding "x86_64" to the "SupportedArchitectures" array) but that doesn't appear to be necessary.

The "tap and hold" context menu is not offering "Uncompress" as an option (only Copy, Duplicate, Move, Delete, Info, Quick Look, tags, Rename, and Share). I'm on iOS 13.5.1.

Tapping on the zip file in the Files app is not uncompressing it for me. I just see the file name, its size, "539 files" and a "Preview Content" button which, when tapped, ends up saying "No file to preview".