Nix-to-Config File

This page is intended to be a cheat sheet for creating a config file of any format in any place. This page will cover:

• A minimal example in Nix needed to create a config file in a specific place
• A minimal example in Nix for each grammar primitive for each config file format
• Potential quirks

This has a rather complex structure that cannot easily be represented in a key-value pair format.

Use the nix repl tool to immediately evaluate a Nix expression, and see how it would come out without rebuilding things.

nix-repl> let pkgs = (import <nixpkgs> {}); in pkgs.lib.generators.toJSON {} {a = 3;}
"{\"a\":3}"