You could do signup through a form and just throw a QR code on a poster.
My university Linux Users Group usually uses Crytpad (which is FOSS and seems federated, and has a flagship instance) to create forms for votes, so that might do the trick for you.







Maybe it’s just I’m a relative noob to build systems, but gosh, do I love Meson.
The documentation’s pretty okay - not perfect, but better than cmake - and it feels like I can actually learn it by example through looking at other projects’ setups.
I can live with using other build systems for other projects, but for personal projects, I’ll always choose Meson. I’ll always push for it if a project I’m working on needs to choose a build system.