The fabric version of this mod works almost perfectly when only installed on the server, but not the client, with only 1 flaw. The lang file defining the name of the enchantment only exists on the server, so the enchantment shows up as a blank line in tooltips.

I think I've found a library called Fabric-Server-Enchantments which might be useful to make this work. I've tried implementing this myself but I don't know enough about fabric to make it work. It looks like it should be easy enough if you understand mixins.

I've thought about it and unfortunately I've decided not to support server-only implementations. It's a can of worms that I don't wish to open regarding syncing, since registries are coded to work from both sides, and, although it's possible, the foreseeable solutions to this specific issue are a bit too hacky and incomplete for my liking.