How do set Julia version in VSCode when using juliaup

Tooling VS Code
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1

I am using Juliaup to manage my Julai version. It is now using the 1.10 beta by default. However, for one application, I need to quickly run something in 1.9. I almost exclusively use VSCode.

Is there a way, when using Juliaup, to start a VSCode session using a specific Julai version? I guess I could reconfigure Juliaup to change its default, but I am also running other julia sessions, so it would be neat if there is a way to simply tell VSCode “use this version” (like I can do with e.g. a Jupyter notebook in VSCode).

2

Not exactly what you want, but running:

juliaup default 1.9

in the command line before opening VS Code should do the trick.

UPDATE: this doesn’t work, see: How do set Julia version in VSCode when using juliaup - #8 by davidanthoff

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3

There is

julia.executablePath

in the settings of the VSCode Julia extension.
You can set it, e.g. to:

c:\Users\oheil\.julia\juliaup\julia-1.10.0-beta2+0.x64.w64.mingw32\bin\julia.exe

Choose your path to your desired Julia executable. My example is for Windows.

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4

Does this work for JuliaUp though? EIther case, it seems like I would have to go in, change the executive file, and then start VSCode, and then change it again?

5

Yeah, this would work, but feels like there might be something more convenient (just like juliaup lets you star ta Julia session without changing the default).

6

In my example I choose a specific juliaup installed executable.

You can start a specific version also with, e.g.

julia +1.10

but I don’t know if this is somehow configurable in VSCode in a convenient way.

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7

Ok, yeah, that make sense now, sorry for the confusion!

8

So, I think setting julia.executablePath to something like julia +1.9 should work.

What does not work (but really should) is that the VS Code extension picks up Juliaup directory overrides or the env var. That is a bit of a shame, and I hope to fix that sometime soon.

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9

Ok, at least good to know. Hopefully some neater interface for these appear some time down the line :slight_smile:

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10

Slight improvement: I update juliaup default and then I reload the VSCode window from the command palette

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11

Yeah, that’s what I have been doing as well. However, that requires me to then reset the default for when I need to restart my other julia sessions (which I run in my standard environment). And then when I need to restart this julai session I have to run through it all as well.

It works, but it is a bit of a mess to keep track of.

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