[Shoue]

Here are my favourite use-cases:

* automatically installing all project libraries and dependencies so you can build your project without having to apt install a bunch of stuff first. This is done through direnv/lorri, so when you cd into the project directory, direnv uses nix to install everything automatically. Very quick onboarding and also no need to keep up with the various company projects' deps.

* building docker images with intentional layering so deltas remain small is a breeze: buildLayeredImage.

* with home-manager I can ensure my dotfiles have all their dependencies so vim plugins and whatnot just work. It also means I get the same nice home environment on _any_ Linux distro I choose.

* Same as above except for my entire system with NixOS.

* Shipping packages with specific config defaults _only_ for your project directory so you don't have to worry about making everyone configure something is also a breeze with Nix package overlays and overrides.

* You can even have Nix modules for your VPN connection and the like so co-workers can import that into their home-manager or NixOS configuration, and if it changes so does your system/home config next time you build it.