Add OCaml Jupyter 0.0.0

[akabe]

I released an OCaml kernel for Jupyter notebook: https://akabe.github.io/ocaml-jupyter/

There is another OCaml kernel "IOCaml". It seems no longer maintained, and has some bugs, e.g., unable to use ppx and unsupported session keys. Thus I re-implemented a new program without such bugs.

[akabe]

I don't know the reason of failed test cases.

[camlspotter]

It failed to install zeromq development package for CentOS 7. It is a glitch of conf-zmq.0.1 which your package depends on: https://github.com/ocaml/opam-repository/blob/master/packages/conf-zmq/conf-zmq.0.1/opam
My understanding is that you can leave it. Mighty OPAM team will take care of the rest.

[akabe]

@camlspotter Thanks. I guess conf-zmq is not broken because building on Debian and Alpine Linux is not failed. However, epel-release is required in CentOS7 because CentOS 7 has no zeromq-devel in the standard package repository. I tried on docker:

$ docker run -it --rm centos:7 bash
# yum update
# yum search all zeromq zmq
Loaded plugins: fastestmirror, ovl
Loading mirror speeds from cached hostfile
 * base: ftp.tsukuba.wide.ad.jp
 * extras: mirror.vastspace.net
 * updates: download.nus.edu.sg
Warning: No matches found for: zeromq
Warning: No matches found for: zmq
No matches found
# yum install -y epel-release
# yum search all zeromq zmq
...
zeromq-devel.x86_64 : Development files for zeromq
zeromq3-devel.x86_64 : Development files for zeromq3
zeromq.x86_64 : Software library for fast, message-based applications
zeromq3.x86_64 : Software library for fast, message-based applications
...

epel-release must be installed before installation of zeromq, i.e., yum install -y epel-release zeromq-devel says that zeromq-devel is not found, but yum install -y epel-release && yum install -y zeromq-devel succeeds.

[akabe]

I tried editing conf-zmq.1.0/opam as follows:

opam-version: "1"
maintainer: "francois.berenger@inria.fr"
homepage: "http://zeromq.org/"
license: "LGPL"
build: [
  ["cc" "test.c" "-I/usr/local/include" "-L/usr/local/lib" "-lzmq"]
]
depexts: [
  [["debian"] ["libzmq3-dev"]]
  [["ubuntu"] ["libzmq3-dev"]]
  [["osx" "homebrew"] ["zeromq"]]
  [["alpine"] ["zeromq-dev"]]
  [["centos"] ["epel-release" "zeromq-devel"]]       # added epel-release
]

but it was failed installing zeromq-devel due to the reason of the above comment.

[akabe]

@avsm @samoht I need to install epel-release before zeromq-devel. Do you have any good ideas?

P.S. Some other packages require epel-release, but opam depext for them failed (I tried it on CentOS7 in Docker).

• https://github.com/ocaml/opam-repository/blob/b7ad53cbfeabd30d5670b3305d226c76d079c809/packages/hdf5/hdf5.0.1.3/opam
• https://github.com/ocaml/opam-repository/blob/c45df85d983a5466153de6ede8c60d514cf3d521/packages/sundialsml/sundialsml.2.7.0p0/opam

[avsm]

an issue for this on https://github.com/ocaml/opam-depext/issues would be appreciated -- sounds like we need to support yet more metadata for centos

[avsm]

cc @andrewray as well so he can comment on IOCaml's support status

[akabe]

@avsm Thanks. I'll issue this case.

cc @andrewray Sorry, I should contact you before publishing this package. I use IOCaml at work because IOCaml is an awesome package. I need ppx and comm messages, etc. but related issues and PRs are not updated from a few years ago. I tried adding ppx to IOCaml, while it's difficult for me (andrewray/iocaml#38).

[akabe]

I posted ocaml-opam/opam-depext#70. I'll add os != "centos" for passing CI for now.

[andrewray]

This package certainly fixes a need that a number of users have requested - namely updated protocol support.

IOcaml has been stalled for some time due partly to a severe lack of time, but also due to the complexity of updating the entire suite of kernel, server and javascript components.

I reality iocaml has become unsupported for some time as any help that has been offered has been concentrated on the kernel only, without considering the other projects. That's mainly my fault for splitting the projects in the first place. @rgrinberg has offered help in fixing some of this that I should really make some time to support.

[akabe]

@andrewray Thanks. I plan to only support kernel (and already support ppx and Jupyter protocol v5). JS kernel and server of IOCaml are useful, but I mainly use numerical computing libraries including C bindings (difficult to migrate to JS).

I was impressive when I first used IOCaml! I wanted to improve it, but some bugs are hard for me. As a result, I re-implemented.

[akabe]

Hmm. os = linux on CentOS7 in Docker. It seems opam config list contains no information related to linux distribution.

[akabe]

@avsm cc @yallop

I fixed conf-zmq for installation of zeromq-devel after epel-release on CentOS7 (see this script) and added the fedora case.

[yallop]

Thanks for fixing the conf-zmq package, @akabe. Since the changes only affect metadata, could you please just apply them directly to conf-zmq.0.1 rather than creating a new version (conf-zmq.0.2)?

[akabe]

@yallop OK. I fix it.

[yallop]

Thanks!