It is doable, though.  Look at LispMe (http://www.lispme.de), a
Scheme interpreter for PalmOS.  The author got around the memory 
problems by finding a way to use databases as the memory space of the 
interpreter.  Also, the newer ARM-based Palm devices should have fewer 
limitations.  Moreover, since the LispMe source is available, most 
likely any GUI code you wanted could be lifted from that.  I'm not 
volunteering, of course, but I think it would be doable (I've looked at 
the problem in connection with thinking about writing a Prolog 
interpreter for PalmOS).

							- Dan Albro

Xavier Leroy wrote:

>>In such case what about ocaml port for palm pilot?
> 
> 
> François Rouaix did a Palm port of Caml Light (the "lean and mean"
> ancestor of OCaml) a long time ago.  
> 
> The main problem was that the data segment of a Palm OS program had to
> fit in 64K, which is quite tight for Caml Light and definitely not
> enough for OCaml.  (The remainder of the RAM was either read-only code
> blocks, or PalmOS "databases" that must be accessed through system calls.)
> I don't know if this limitation was lifted in later versions of PalmOS.
> 
> Problem number 2 is that text-only apps aren't very usable on a
> handheld, so you'd need to interface a large chunk of the GUI toolkit.
> 
> - Xavier Leroy
> 
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