I came here to say the same. Recently I have started using Nix as a universal package manager, every project I start starts with a `shell.nix` file with a pinned <nixpkgs> commit and some line to bring in gcc or make. I always build in a nix-shell --pure to make sure I didn't miss anything. The system is so great and works so beautifully it's even hard to explain.

Nix has very sensible defaults and defining a Nix expression to install a cmake or autotools package is a breath. But even projects with just Make or no build system at are easy to install, you just need to copy the output to the /nix/store in the installPhase (to $out). And I can easily define Python or any other language dependencies in the same consistent and concise syntax. I have no fear anymore I won't be able to install dependencies in the future. Any other dev just does `nix-shell` in the project root and they are sure they are ready to go. I even used to hate the Nix syntax (as opposed to Guix) but at some point it "clicked" and now it makes a lot of sense.

Only drawback is no Windows support. Maybe someone at Microsoft could help with that? It would be so sad to have the community converging to a suboptimal solution just cuz Windows... :/