[Windows only][Julia 1.11] Quarto render hangs when using OMJulia

[icpmoles]

Here is a small Quarto notebook that tries to execute the example from the OMJulia documentation:

---
title: openmodelica_quarto
engine: Julia
---

```{julia}
#import Pkg; Pkg.add("OMJulia")
using OMJulia
using OMJulia.API: API
```

Calling `OMCSession` hangs the render/preview but works normally when running the cell from VS Code

```{julia}
omc = OMJulia.OMCSession();
```


The following cell is never exucuted:

```{julia}
installDir = sendExpression(omc, "getInstallationDirectoryPath()")
```

When rendering/previewing on Windows the execution hangs on the second cell so the notebook never finishes rendering.

openmodelica_quarto> quarto preview index.qmd 
Starting julia control server process. This might take a while...
Julia server process started.
Running [1/3] at line 10:  using OMJulia
Running [2/3] at line 17:  omc = OMJulia.OMCSession();

It was tested on the following environment:

• Windows 11
• Julia 1.11.6
• Quarto 1.8.17 & 1.7.32
• OpenModelica 1.25.1

The notebook renders normally on Linux (standard Ubuntu runner from Github Actions).

I was in doubt between opening a ticket with QuartoNotebookRunner or OMJulia, I decided to open it here first because it only happens with Quarto.

N.b: it requires OpenModelica installed on the system (around 8Gb)

[MichaelHatherly]

Thanks for the report @icpmoles. 1.11 is specified here, just to confirm does this not happen on 1.10 on Windows?

[icpmoles]

@MichaelHatherly Just tested on 1.10 and it behaves similarly.

[MichaelHatherly]

Ok, thanks. If at all possible would you be able to try this branch: #317, perhaps this is a task problem and that refactoring might help this problem. If not, no worries.

[icpmoles]

No luck, still the same behavior.

[MichaelHatherly]

Thanks for checking.