Version 1.11.0 has been released now, and the current trunk doesn't build without updating other things. The error was:
File "lib/xenstore.ml", line 165, characters 19-34:
Error: The module OS is an alias for module Os_xen, which is missing
ocamlopt lib/.netchannel.objs/native/netchannel__Backend.{cmx,o} (exit 2)
(cd _build/default && /home/opam/.opam/4.07/bin/ocamlopt.opt -w -40 -g -I lib/.netchannel.objs/byte -I lib/.netchannel.objs/native -I /home/opam/.opam/4.07/lib/base/caml -I /home/opam/.opam/4.07/lib/bigarray-compat -I /home/opam/.opam/4.07/lib/bytes -I /home/opam/.opam/4.07/lib/cstruct -I /home/opam/.opam/4.07/lib/fmt -I /home/opam/.opam/4.07/lib/io-page -I /home/opam/.opam/4.07/lib/io-page-x[...]
File "lib/backend.ml", line 23, characters 16-29:
Error: The module OS is an alias for module Os_xen, which is missing
Version 1.11.0 has been released now, and the current trunk doesn't build without updating other things. The error was:
Reported by ronpunz in https://groups.google.com/forum/#!topic/qubes-users/PsYUXvypPDs