does

[test].extra_env_vars

have any side-effects when it comes to using a REAPI server to do caching? (some of) our tests talk to a 3rd party service, and every dev has their own API key. I'm guessing this means that the cache contents are unique for every developer? Is there a way to say "the hash of this variable is always `1`"

Oh, that’s a neat idea.! But to answer your question, not to my knowledge no.

this is an area that we’re hoping to tackle soon… but for now, the ticket covering it is https://github.com/pantsbuild/pants/issues/12203

Have added a comment to that ticket.