tox.ini currently contains a hardcoded reference to Osaka. This'll be a problem when switching to developing the next fork.

We should single source this information, perhaps using the Hardfork class.

I'm thinking something like $ ethereum-spec-forks -n N --test-name (or whatever) where N is the fork number (0 being Frontier and -1 being the most recent).
Originally posted by @SamWilsn in #1280 (comment)