I've also noticed this. If you install `rustc` it says that you get `rust-gdb`, but that's really just a wrapper script around `gdb`, which it doesn't install.
You can use as much or as little of it as you want, which I know is not a satisfying answer.
I think the most common use case is as a build system, but in this context you aren't limited to building packages, you can also build "environments". By "environments" I mean a shell with certain packages available in `$PATH`. You would use Nix like other build systems in the sense that you specify the build requirements (which other packages, libraries, etc you need to build _your_ stuff), then you specify how exactly to build your stuff. Here "stuff" could be as little as a shell script or as much a huge monorepo.
There are ways to use Nix like you would use Ansible or Terraform, but I wouldn't say that's the mainstream use case of Nix.
Any good resources on how to use flakes? I'm currently experimenting with having home-manager work via a flake but I haven't come across any good HOWTOs on common operations. For example, I'd like to update the flake dependencies similar to how I used to use "nix-channel --update" to freshen the dependencies used by home-manager.
This is a script I run every monday when I come into work to get the latest updates on my system [1]. It prints the flake hash when it runs, so I can also rollback if there are issues.
