Hi, I think you have to install haxe separately to export from xcode. I've successfully exported a game from xcode before, but my main game that I'm working on won't export from xcode for some reason.
I'd like to do this too, as I already have a sticker pack for messages on the appstore which is related to my game, and I'd like to incorporate the sticker pack into the game when I launch. (sorry for going a bit off subject).
Apparently, according to the chat on Discord, the devs are going to make it a bit easier to set up export to xcode in the near future.