Lwt installation error

[Dimosthenis Pediaditakis <dimosthenis.pediaditakis@xxxxxxxxxxxx>]

Hi everyone,
has anyone had recently any problems installing 'lwt 2.4.3' against 
'4.00.1+mirage-xen' (using opam)?
Thanks,
Dimos


---------------------------
    Error message
---------------------------
 ocamlfind ocamlc -c -g -I src/core -package unix -package camlp4 
-package bigarray -syntax camlp4o -ppopt syntax/pa_lwt_options.cmo 
-ppopt syntax/pa_lwt.cmo -ppopt syntax/pa_lwt_log.cmo -ppopt 
syntax/pa_optcomp.cmo -I src/unix -I src/core -o src/unix/lwt_bytes.cmo 
src/unix/lwt_bytes.ml
+ ocamlfind ocamlc -c -g -I src/core -package unix -package camlp4 
-package bigarray -syntax camlp4o -ppopt syntax/pa_lwt_options.cmo 
-ppopt syntax/pa_lwt.cmo -ppopt syntax/pa_lwt_log.cmo -ppopt 
syntax/pa_optcomp.cmo -I src/unix -I src/core -o src/unix/lwt_bytes.cmo 
src/unix/lwt_bytes.ml
File "src/unix/lwt_bytes.ml", line 273, characters 2-17:
Error: Unbound value Array1.map_file
Command exited with code 2.

----------------------------------------------------
    lines 273-273 src/unix/lwt_bytes.ml
----------------------------------------------------
let map_file ~fd ?pos ~shared ?(size=(-1)) () =
  Array1.map_file fd ?pos char c_layout shared size

---------------------------
   System Info
---------------------------
 - Ubuntu server 12.10
 - Kernel 3.5.0-34-generic  x86_64
 - OCaml version: 4.00.1
 - Opam version: 1.0.0
 - Opam repositories:
  [git]   mirage-dev     git://github.com/mirage/opam-repo-dev
  [http]     default     http://opam.ocamlpro.com
 - Installed ocaml packages:
      libcryptgps-ocaml-dev,  libcryptokit-ocaml, 
libcryptokit-ocaml-dev,   libfindlib-ocaml,   libfindlib-ocaml-dev, 
liblwt-glib-ocaml,  liblwt-glib-ocaml-dev,  liblwt-ocaml, 
liblwt-ocaml-dev,   liblwt-ocaml-doc, liblwt-ssl-ocaml, 
liblwt-ssl-ocaml-dev,    libnethttpd-ocaml-dev, 
libobrowser-ocaml-dev,    libocamlnet-ocaml, libocamlnet-ocaml-dev,    
libocamlnet-ocaml-doc, libocsigen-ocaml,    libocsigen-ocaml-dev, 
libocsigen-ocaml-doc,    libocsigen-xhtml-ocaml-dev, 
libocsigenserver-ocaml,    libocsigenserver-ocaml-dev, libpcre-ocaml,    
libpcre-ocaml-dev,    libreact-ocaml, libreact-ocaml-dev,    
libsqlite3-ocaml,    libsqlite3-ocaml-dev, libssl-ocaml,    
libssl-ocaml-dev,    libtext-ocaml, libtext-ocaml-dev,    
libtyxml-ocaml,    libtyxml-ocaml-dev, libzip-ocaml,    
libzip-ocaml-dev,    ocaml,    ocaml-base, ocaml-base-nox,    
ocaml-compiler-libs,    ocaml-findlib, ocaml-interp,    ocaml-nox,    
ocamlduce,    ocamlduce-base