Dune: missing library which is actually present

[vzaliva]

Here is my jbuild file:

(executable
 ((name        Foo)
  (libraries (batteries email_message core_kernel ocamlnet))
  ))

Trying to build:

$ jbuilder external-lib-deps --missing Foo.o
Error: The following libraries are missing in the default context:
- vcardgen
Hint: try: opam install ocamlnet

But the package is already installed!

$ opam install ocamlnet
[NOTE] Package ocamlnet is already installed (current version is 4.1.4).

[dra27]

ocamlnet is an opam package, not a findlib library. You need to specify which ocamlnet libraries you are using. Here's the list:

dra@zesty64:~$ ocamlfind list | fgrep 4.1.4
equeue              (version: 4.1.4)
netcamlbox          (version: 4.1.4)
netcgi2             (version: 4.1.4)
netcgi2-plex        (version: 4.1.4)
netclient           (version: 4.1.4)
nethttpd            (version: 4.1.4)
netmulticore        (version: 4.1.4)
netplex             (version: 4.1.4)
netshm              (version: 4.1.4)
netstring           (version: 4.1.4)
netstring-pcre      (version: 4.1.4)
netsys              (version: 4.1.4)
netsys.outofheap    (version: 4.1.4)
netunidata          (version: 4.1.4)
rpc                 (version: 4.1.4)
rpc-auth-local      (version: 4.1.4)
rpc-generator       (version: 4.1.4)
shell               (version: 4.1.4)