{ config, lib, pkgs, username, ... }: with lib; let cfg = config.usecases."3d-printing"; in { options.usecases."3d-printing" = { enable = mkEnableOption "Enable 3d printing stuff"; }; config = mkIf cfg.enable { environment.systemPackages = with pkgs; [ lpc21isp dfu-util openscad # orca-slicer ]; home-manager.users.${username} = { programs = { lazygit.enable = true; }; }; }; }