I got the scss compiling with my shell-out method, and I will tighten it up. Maybe add an http handler to server compiled output, add error handling etc, and then I will look into using that library.
I'm kind of a clojure newb and haven't used the JVM in any significant way in 10 years, so that might take some time.
Ill let you know when I publish the code. Thanks for the work on Arachne, I think it can be a very useful tool for clojure developers.