Hello Jeremy, release team, Yes, the minimal set of involved source packages is python-acme, python-certbot, python-certbot-nginx, and python-certbot-apache. This would also require the new package python-josepy, which is also maintained by the LE team.
They should be able to be taken directly out of backports without breaking anything. Sincerely, -- Harlan Lieberman-Berg ~hlieberman