Good evening, You can now include Parenscript files in ASDF systems. Parenscript will compile a whole slough of .paren files (with due respect for dependencies) into a single output stream. This and the package system should allow people to share legitimately modularized Parenscripts. In a short while, with some semantic analysis and optimization, it will be extremely easy and efficient to share Parenscript code. See src/paren-asdf.lisp and src/compilation-interface.lisp for implementation details, and docs/internal/asdf.lisp & [1] for asdf reference. Here is some syntax: (defpackage paren-ajax-system (:use :cl :asdf)) (in-package :paren-ajax-system) (defsystem :paren-ajax :name "paren-ajax" :author "Red Daly <reddaly@gmail.com.>" :version "0.0.1" :license "MIT" :description "Basic Parenscript functions for AJAX." :components ((:static-file "paren-ajax.asd") (:file "package") (:parenscript-file "util" :depends-on ("package")) (:parenscript-file "core-ajax" :depends-on ("package"))) :depends-on (:parenscript)) The following will produce a string with all the Parenscript files in :paren-ajax and its dependencies compiled to javascript: (with-output-to-string (stream) (parenscript:compile-script-system :paren-ajax :output-stream stream))) => "function util_lispyMap(util_fun, util_thing) { return util_thing.map(util_fun); }; var parenAjax_hellobang = 'hi there'; " There are two ways to compile Parenscript systems via ASDF: 1. Parenscript files will be compiled when the system is compiled (via asdf:compile-op), giving warnings and errors alongside lisp warnings and errors. This will produce a bunch of .js files that ride in tandem with your .paren files 2. Use the method described above. This outputs Javascript code to a single stream. 2 works with whole ASDF systems, not individual components. I would like to get it working for individual components, however. Suggestions are welcome for how to do this. See docs/internal/asdf.lisp for the entirety of ASDF source code. This is what I used as a reference to implement the extension. Enjoy, Red [1] http://constantly.at/lisp/asdf/index.html#Top