I don't know, but https://github.com/kvs/rubies-fish https://github.com/kvs/rubies-fish does work for switching rubies on a .ruby-version file. It works by get

I don't know, but https://github.com/kvs/rubies-fish https://github.com/kvs/rubies-fish does work for switching rubies on a .ruby-version file. It works by getting notification when the PWD environment variable changes, which seems like an elegant way of managing this.