Env spec to run asv compare on envs currently defined in the config?

[flying-sheep]

When running asv compare commit1 commit2, it shows all results that were ever produced for these commits.

This is messy if you e.g. change some dependencies in the matrix, then re-run asv for the commits, and finally run asv compare, as this will show table rows for obsolete environments.

It’s possible to get a list of currently defined environments using asv show or

[env.name for env in asv.environment.get_environments(conf, "")]

How to run asv compare so it just includes these currently defined environments in the table?

The documentation for environment specs such as existing:??? and so on is pretty sparse.