A quick presentation of Nickel, a general configuration language which is inspired from Nix expressions to which it adds some cool features. Have you ever wished once that you could use the Nix language for something else than Nix ? To write a small project-specific script, or to generate a configuration when having to deal with horrendous YAML templating languages ? Nix may have its flaws, but it uses a simple yet powerful language - fundamentally, a lazy JSON with higher-order functions - that could very well be used to generate other configurations than Nix packages. In this short talk, I present the Nickel configuration language, which is an ongoing effort to make a standalone offspring of the Nix language , and while doing so, takes the opportunity to add new capabilities to the language.