Is there a way to support transactions, or perhaps a way to ask "If I were to add or remove these relationships, now which users have permission?" I'm looking for a way for users to confirm that they actually want the changes they're proposing by showing them a preview of the consequences.

this has been proposed but is right now just an idea

Until then, could we use caveats to add relationships with the context of that particular user's session, and then delete them if they change their mind?

you could, but I wouldn't really recommend doing so, as the cleanup will be somewhat difficult

Hm. Is there fast way to shadow or clone a subset of relationships so we could make the edits against that instead? I know there is a bunch of functionality around testing that I don't quite understand in the code -- is there a way using something like that?

there is bulk export/import

zed validate doesn't create a completely new datastore, right?

it does

... it must isolate whatever runs, and it does clean up afterward, so the main cost seems to be the bulk export/import. Okay. Thanks! If you think of any other ways, let me know. : ) I'll try some things.