Interesting to see someone experiment with Nix on SFOS. Thanks for sharing this @nobodyinperson!
Have you heard about Determinate System’s Nix Installer? It’s more flexible and maybe simplifies the experience for you:
for the people unfamiliar with Nix/NixOS I think it would be worth mentioning that Nix’s package store can easily take up a few gigabytes in size (and pulling in certain packages will eat up mobile data fast). That’s sort of a catch on mobile.
it depends on the number of packages and their depemdencies, of course.