I'm honestly not sure how useful that flakehub is, and I feel the same dislike as I do for like AUR. First time I'm seeing it though.
In your experience, do you think using nix develop would slim things down without sacrificing too much comfort?
Honestly, I've only ever used it a few times when I see that a repo has it. I checked out some of them, and with barely no nix language knowledge I was able to roughly understand what's going on, but I doubt I'd be able to make it without a template or LLM.
I'll keep devbox in mind if I ever need that functionality.