I was able to fix the packaging issue. Regarding the XCBBuildService this seems to happen (XCBBuildService eat up huge memory… | Apple Developer Forums) but i’ve only noticed it on Xcode 14.2, so not sure what changed from 13.4 to enable that behaviour. I have 32GB of RAM and the memory usage goes up very fast on each packaging i try, it gets to a point where the service just crashes and needs to be restarted or it gets to 75GB of RAM usage, obviously through swap, which slows down the system.
Another common annoying issue (which also happens in Xcode 13.4) is that when packaging the dotnet process just gets stuck very often and i need to go to the activity monitor and close it. Some time that works, other times i need to do this process multiple times until it gets unstuck.