Any #Scheme / #Clojure folks out there?
I just updated my transducers egg (https://gitlab.com/ThatGeoGuy/chicken-transducers) as of 0.7.0 to be fully R7RS portable, plus-or-minus some SRFI support.
As of now it should be fully portable across R7RS systems, so let me know if you end up using it / packaging it!