simple_jucaml

A very simple Jupyter kernel for OCaml

Compilation

You'll need Yojson, Nocrypto and ZMQ bindings for OCaml. It also relies on Core.Time and Core.Uuid packages.

opam install core
opam install yojson
opam install nocrypto
opam install ZMQ

Native toplevel is not supported by OCaml, thus only bytecode compilation is possible.

corebuild jucaml.byte

Installation

Check in which directories you can store kernels for Jupyter to find them.

$ jupyter --paths
config:
    /home/user/.jupyter
    /usr/etc/jupyter
    /usr/local/etc/jupyter
    /etc/jupyter
data:
    /home/user/.local/share/jupyter
    /usr/local/share/jupyter
    /usr/share/jupyter
runtime:
    /run/user/1000/jupyter

Pick one of them and make a jucaml subdirectory there.

mkdir -p /home/user/.local/share/jupyter/kernels/jucaml

Finally, create a kernel.json with a path to the executable.

cat > /home/user/.local/share/jupyter/kernels/jucaml/kernel.json << EOF
{
    "argv": ["$PWD/jucaml.byte", "{connection_file}"],
    "display_name": "JUcaml",
    "language": "OCaml"
}
EOF