One of the pieces of shrapnel from Boris getting Brexit done involves driving licences.
I hold a UK driving licence which up until now has been fine. As I am resident in Spain it will no longer, so I have to swap my UK licence for a Spanish one. Not a biggie in theory -- there is a website to take you through the process. The relevant form has to be completed by the end of today (UK time).
The form has to be digitally signed and the Spanish state has a piece of software to do that. I was delighted to find that said software is available for Linux and that there was a downloadable deb for Debian. Here is a url for that deb: