I try to make a little CGI program. I have installed the system “libapache2-mod-netcgi-apache” on Debian 11. utop does load easily netcgi2 (#require “netcgi2”), but using netcgi2 in the dune file produce the following error : File "bin/dune", line 4, characters 17-24: 4 | (libraries core netcgi2)…

One thing that may happening is that utop is configured to look into your system directory (/usr/lib/ocaml) but dune is using an opam switch (I suppose that this would happen if you’re using utop from the debian package).

Then what should be canonic way to use Debian provided packages AND opam provided packages in the same project ?

FInally, I have installed ocamlnet… and now : Error: Required module `Condition' is unavailable the Condition module is not something I have explictely called.

AFAIR, it is something related to threads…

I suspect the answer is: “don’t do that”. I never do. If I’m going to be using opam at all, I make sure that there’s no ocaml/ocaml packages installed via dpkg/apt on the machine.

[image] Chet_Murthy: answer is: “don’t do that”. I never do. If I’m going to be using opam at all, I make sure that there’s no ocaml/ocaml I have removed Debian packages… same issue. And now, I don’t have the Apache mod !

First, a clarification: I doubt that your bug is due to mixing packages between opam and Debian – if that were the problem, you’d see “interesting” linkage errors, not “can’t find file”. Do you have a repo that reproduces your problem (or a cut-down version of your problem) that you can share? The…

Note, that with an environment with no Opam addition, ocamlfind ocamlc -package netcgi2 main.ml produce the error : root@ks3001154:/tmp# ocamlfind ocamlc -package netcgi2 main.ml ocamlfind: [WARNING] Cannot read directory /usr/local/lib/ocaml/4.11.1/stublibs which is mentioned in ld.conf File "ma…

I have a switch with ocaml 4.14.0, ocamlnet installed. $ which ocaml /home/chet/Hack/Opam-2.1.2/GENERIC/4.14.0/bin/ocaml $ ocamlfind ocamlc -package netcgi2 -c main.ml $ cat main.ml let process (cgi: Netcgi.cgi) = () How is your ocaml installed ? your ocamlnet ?

Error: Library "netcgi2" not found

Ecosystem

geoffder January 13, 2023, 8:05pm 9

Condition moved from systhreads into the stdlib recently, so I suspect there is a versioning issue.

What are the biggest reasons newcomers give up on OCaml?

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Error: Library "netcgi2" not found

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