See also esp-lisp [1] for a perhaps more practical Lisp on the platform.
EDIT: I created a new submission [2] for it, should someone want to discuss it.
EDIT: I created a new submission [2] for it, should someone want to discuss it.
I confirmed that it compiles within the Arduino IDE. Porting it to another micro shouldn't be prohibitive. The amount of Arduino specific stuff seems to be minimal.