{ config, pkgs, lib, ...}: { options = { nixpkgs-fmt = { enable = lib.mkEnableOption { description = "Enable nixpkgs-fmt"; default = false; }; }; }; config = lib.mkIf (config.nixpkgs-fmt.enable) { home-manager.users.${config.user} = { home.packages = [ pkgs.nixpkgs-fmt ]; }; }; }