To set up elsewhere:
1. Delete .emacs.d/var/gnus
2. Start gnus
3. Run gnus/import-feed-list
4. Profit???
I had to also delete all the emails in Emacs-Cloud on IMAP too, so it wasn't
what I'd call perfect. But ... it's good enough, for now. I really wish Gnus
was more programmable, tbh.