{ description = "Environment for building a C++ projects"; inputs = { nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable"; }; outputs = { nixpkgs, ... }: let system = "x86_64-linux"; # Adjust for your system pkgs = import nixpkgs { inherit system; }; dependencies = with pkgs; [ cmake gnumake clang ]; in { devShells."${system}".default = pkgs.mkShell { packages = dependencies; }; }; }