opts_current locking in 1.44 is breaking JuliaCall about knitr

[yihui]

@bschneidr The status of JuliaCall is indeed a little concerning, but the nice thing is this: https://github.com/Non-Contradiction/JuliaCall/blob/master/R/RMarkdown.R i.e., it has provided an engine function that can be set via knitr::knit_engine$set(). If JuliaConnectoR also provides such a function, I'll be happy to support it on knitr's side. Thank you!

[yihui]

I tend to change the error to warning for now.

[bschneidr]

Perhaps knitr could rely on JuliaConnectoR instead of JuliaCall?

https://cran.r-project.org/web/packages/JuliaConnectoR/index.html

JuliaCall doesn't seem to be actively maintained, whereas JuliaConnectoR is actively maintained and seems much better documented (for example, it now has a detailed JSS paper).

[cderv]

@bschneidr I would advise opening an issue at https://github.com/stefan-m-lenz/JuliaConnectoR for a julia engine for knitr.

We can then chime in if help is needed for that. Thank you !