On F12, I'm getting this build failure:
ocamlfind ocamlopt -ccopt '-L ../../src/.libs' \
-warn-error A -I .. mlguestfs.cmxa lvs.ml -o lvs
File "lvs.ml", line 11, characters 10-24:
Error: Unbound value Guestfs.create
make[2]: *** [lvs] Error 2
Admittedly with STREQ-related changes, but they seem unrelated...