Just updated Xcode to 13.2 via Mac App Store.
I installed the additional components, and my project won't compile anymore : Xcode just tells me Internal error: missingPackageDescriptionModule - Resolving Package Graph Failed when attempting to build. None of the Swift packages used within my app seems to build, because "Package resolution errors must be fixed before building".
Already attempted to restart Xcode, update macOS, clean derived data, reset Swift package caches and update package versions to no avail.
Guess I'll try re-installing Xcode but... does anyone else have the same issue?
EDIT: Xcode 13.2.1 version fixes this issue and can be downloaded from the Mac App Store.
Old Answer:
Apple has responded:
We're currently investigating this issue — thank you to those who have filed bug reports so far. To workaround this issue, please re-download Xcode 13.2 RC directly from the More Downloads page.