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Subject: Re: [Caml-list] Errors in installing 'lwt'

I am puzzled by a comment from Török. I tried

$ocamlfind list
bigarray            (version: [distributed with Ocaml])
bytes               (version: [distributed with OCaml 4.02 or above])
cmdliner            (version: 0.9.5)
compiler-libs       (version: [distributed with Ocaml])
compiler-libs.bytecomp (version: [distributed with Ocaml])
compiler-libs.common (version: [distributed with Ocaml])
compiler-libs.optcomp (version: [distributed with Ocaml])
compiler-libs.toplevel (version: [distributed with Ocaml])
dynlink             (version: [distributed with Ocaml])
findlib             (version: 1.5.3)
graphics            (version: [distributed with Ocaml])
menhirLib           (version: 20140422)
num                 (version: [distributed with Ocaml])
num-top             (version: 1.5.3)
num.core            (version: [internal])
ocamlbuild          (version: [distributed with Ocaml])
ppx_tools           (version: 0.99)
ppx_tools.metaquot  (version: 0.99)
stdlib              (version: [distributed with Ocaml])
str                 (version: [distributed with Ocaml])
threads             (version: [distributed with Ocaml])
threads.posix       (version: [internal])
threads.vm          (version: [internal])
unix                (version: [distributed with Ocaml])

There is no 'camlp4' in this list despite the fact that 'opam' installed 
it without any problems.