It doesn’t help that the term is hugely overloaded. Nix might mean the package manager, the shell, the operating system. There are so many valid permutations of

It doesn’t help that the term is hugely overloaded. Nix might mean the package manager, the shell, the operating system. There are so many valid permutations of letters; why they chose to reuse Nix for everything is a mystery to me. The other issue is complexity. If you can manage to figure out the jargon, you’re greeted with the requirement that you completely port an entire project to get any benefit, and that’s non trivial. It requires learning a whole new language, and when the (highly opinionated) language conflicts with other tools’ ideas, for example pip, the documentation generally bashes the other tool, boasts how much better it is, and then proceeds to have devs write dozens of lines in a new language they invented when one line of Python used to be enough.