Comment by whazor
Nix currently has the most packages of any distribution, see https://repology.org/
The model of having packages on Github with pull requests scales very well.
Therefore, you could argue that people are getting things done with Nix.
How many of them actually work though? If you end up having to go fix upstream packages then having a tool manage your environment is not useful since you still have to understand the domain.
With Nix I usually ended up in a situation where I had to both figure out how to configure my environment _and_ fix the upstream Nix packages. At that point it’s just easier to stick to Homebrew and some custom shell scripts.