I sometimes just use a shell.nix, generally for libraries or more simple projects that are generally robust to changing versions of libraries or system tools. But for more complex applications I use flakes because it lets me lock the dependencies with the flake.lock file.

Not yet, though that could be an interesting project. My Rust synth (CAW) on the other hand: gridbugs.github.io/bevy-caw-exp...

I have many synths!

It should, yeh, if you attached one to the headphone jack, though I haven't tested this.

Love the rotating scenery effect! Kinda reminds of one of the mode 7 effects on the SNES.