{ config, lib, pkgs, ... }: let cfg = config.custom.study; in { options.custom.study.enable = lib.mkOption { type = lib.types.bool; default = false; }; config = lib.mkIf cfg.enable { environment.systemPackages = with pkgs; [ libreoffice zotero kile texliveFull imagemagick ghostscript kdePackages.okular ]; }; }