Update the Pandoc version installed by setup-pandoc

[jennybc]

This request is motivated by reprex maintenance, i.e. so I see weird stuff when or slightly before reprex users see it. I'd love to leave proactive Pandoc version testing to the rmarkdown maintainers, like @cderv. But it would be nice if a package that depends on Pandoc via an intermediary, like reprex, knows that it's testing on a version its users have (or will soon have).

Proposal: I think it might make sense to approximately tether the Pandoc version installed by setup-pandoc to whatever ships with the current preview version of the RStudio IDE.

Related to #187

[jimhester]

We could probably increase the version.

Also in the meantime you can control the pandoc version you are using in your own workflows with

- uses: r-lib/actions/setup-pandoc@v1
  with:
    pandoc-version: '2.13' # or whatever version is currently in the preview

[cderv]

FWIW this is (using with) what we do in rmarkdown workflows by adding pandoc version to our matrix
https://github.com/rstudio/rmarkdown/blob/0af6b3556adf6e393b2da23c66c695724ea7bd2d/.github/workflows/R-CMD-check.yaml#L32

We also do that to be sure to test older versions (like the current default 2.7.3) even if setup-pandoc increase its default value.

Regarding Pandoc versions in IDE, current version in stable release and in preview is 2.11.4. For daily version, it is 2.14.1 now, and a release is scheduled soon I think.

[gaborcsardi]

Are there any more changes any of you want to see for this?

[cderv]

The default pandoc installed in setup-pandoc is still 2.7.3.

RStudio IDE daily is now at 2.16.2 or the one before. Last release is 2.14.2 I think.

2.7.3 is kind of old in the Pandoc world. In almost all my usage of this, I am changing the Pandoc version install. So that is not a big deal, but every new project using this action is testing with an older Pandoc. I still think it would worth upgrading the default Pandoc version - but maybe in another tag ?

[gaborcsardi]

I am happy to update it, which version should I update to?

[gaborcsardi]

I changed it to 2.14.2 in v2: 453e4fb

Will that be OK?

[cderv]

I am fine with any. I think we can make a rule of following RStudio IDE shipped version, which will soon be Quarto bundled version.

Currently, after a quick check:

• RStudio release and preview are the same 2021.09.1+372 Ghost Orchid and it is in fact 2.14.0.3
• RStudio daily 2022.01.0-daily+309 Prairie Trillium is 2.16.2 now

I don't know what is best to follow really. Probably last preview or stable release ?

[gaborcsardi]

Yeah, IDK, either. I think for most people it does not matter, and for the people that care, they'll probably set the version manually. I'll just leave it as is now, it seems that it is slightly newer than the one in RStudio release.

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