[R-pkg-devel] Disable a particular knitr vignette

Henrik Bengtsson henrik@bengt@@on @ending from gm@il@com
Thu Aug 2 11:41:26 CEST 2018

As a workaround, until resolved, you could precompile your vignette
into a PDF and then use the 'R.rsp::asis' vignette engine
(%\VignetteEngine{R.rsp::asis} etc) to include it as a static PDF.
This is described in the vignettes

On Thu, Aug 2, 2018 at 10:04 AM Iñaki Úcar <i.ucar86 using gmail.com> wrote:
> Hi everyone,
> I have a JSS vignette based on the rticles package. It was compiling
> just fine until rticles v0.5 for some reason started requiring pandoc
> v2.x for such a document class, and failing otherwise. Due to this
> requirement, Windows machines on CRAN show a nasty WARN, because they
> still have pandoc v1.x.
> It is painful for Uwe to install pandoc v2.x there, so I was wondering
> whether there's any easy mechanism to just disable a particular
> vignette based on some condition (in this case, it would be "we are on
> CRAN, this is Windows and the pandoc version is < 2"; this is easy to
> test).
> I tried putting a condition for the output format in the YAML header
> and it works, i.e.:
> output: if (cond) rticles::jss_article else rmarkdown::pdf_document
> But rmarkdown::pdf_document fails to compile, because the JSS class
> has many custom macros. I tried also putting a NULL or a NA there, and
> it doesn't work.
> Does any knitr ninja here know if there's some easy trick to do this
> and make Uwe's life easier? Some "NULL" document format?
> Regards,
> Iñaki
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