I wrote a really lame busybox ash (it might work in other shells) script for stunnel to sit in front of gophernicus and translate it to gemini on the fly... It currently does not support type gopher type 7 (so you can't comment on this phlog with it!), and is probably missing some mime types, but basic functions seem to work. I'll add some more features to it when I get bored. It's posted to github, so add issues and/or pull requests to it at your heart's content.