echo " rankdir = TB ;" >> $@
for i in $(MODULES); do ocamlfind query helm-$$i -recursive -p-format | sed "s/^/ \"helm-$$i\" -> \"/g" | sed "s/$$/\";/g" >> $@ ; done
mv $@ $@.old ; ./simplify_deps/simplify_deps.opt < $@.old > $@ ; rm $@.old
+ for i in $(MODULES); do echo "\"helm-$$i\" [shape=box];" >> $@ ; done
echo "}" >> $@