Yeah our dev environment could use some improvements. We use nix heavily in Fedimint but unfortunately nix and flutter don't play well nicely together so its a bit of a mess right now. Something we're hopefully going to improve soon.

I'll test on NWC on Stacker News this week and try to get it working. Sorry for the difficulties. The app does need to be running for it to work. I mainly tested using Amethyst so it is possible I missed something.