G'day all.
Quoting Yitzchak Gale <gale at sefer.org>:
> What can be done to get an improved list transformer
> into MTL?
Not sure. But a lot of people use mine:
http://sigcomp.srmr.co.uk/~rjp/Nondet.hs
(My darcs repository is down at the moment, unfortunately.)
Cheers,
Andrew Bromage