Nix is (a) and (c), depending on how you want to use it. What differentiates it from docker-compose or `dnf install` isn't just the fact that you can ship somet

Nix is (a) and (c), depending on how you want to use it. What differentiates it from docker-compose or `dnf install` isn't just the fact that you can ship something in containers or install some packages but also the various properties those containers or packages inherit from the build system.