[FIXED] Jupyter lab seems not to connect to Julia REPL

Issue

How to make Jupyter lab work with Julia?

I work in VirtualBox VM Ubuntu 22.04 and use Miniconda and I have done the following:

1. I open a terminal window
2. I made an environment julia and installed with conda Julia 1.9.2 and this env now active
3. I install with conda jupyterlab
4. I start up Julia and works fine and do:
   1. using Pkg
   2. Pkg.add("IJulia")
   3. Pkg.update()
   4. Pkg.build("IJulia")

Not sure what to do next. Instructions I read do not tell, or instruct me to start up Anaconda Navigator, which I have not accessible from the command line, what I understand.

I open another terminal in parallel and make env julia active I give the command: jupyter lab - and jupyter lab start up. I choose kernel Julia 1.9.2 I make simple commands like x=1+2; print(x)

But only get a star to the left.

If I choose kenrel Python 3 instead and run the same code it all works.

Somehow the Jupyter lab notebook "does not connect" with the Julia language.

What shall I do?

Solution

I would usually try to start Jupyter lab from Julia, rather than the other way around. I.e., do:

julia> using IJulia

julia> jupyterlab()

That should open Jupyter lab running from the miniconda that IJulia installs by default.

Answered By - Nils Gudat