IJulia/kernel.jl should not change the global_logger

[bluesmoon]

Hi,

I'm using IJulia v1.23.2 on julia 1.5.3

When we start IJulia kernels, we want logs sent to a log file. To do this, we add the following to our kernel.json:

-L /path/to/our/init.jl

And this init.jl file pulls in LoggingExtras, and sends logs to a file.

Unfortunately, it seems that after this has happened, kernel.jl's init() function runs, and changes the global_logger with these lines:

    logger = Base.CoreLogging.SimpleLogger(Base.stderr)
    Base.CoreLogging.global_logger(logger)

This causes logs to go to the notebook instead.

Would it be possible to make this a configurable option so that the global logger is changed only if that's what we want?

Thanks.

[fredrikekre]

One option would be to use an ijulia startup file instead which is included after IJulia.init:

IJulia.jl/src/kernel.jl

Line 26 in 6f92c42

let startupfile = !isempty(DEPOT_PATH) ? abspath(DEPOT_PATH[1], "config", "startup_ijulia.jl") : ""

[bluesmoon]

That sounds like something I can play with. Will let you know how it goes.

[bluesmoon]

Using startup_ijulia.jl worked well for us.