'Error: Failed to render RMarkdown' in pkgdown GitHub action

[ngreifer]

I'm using pkgdown to make a website for my package, cobalt. The website is up and running, but when I push to GitHub, the pkgdown test fails with the following error:

── Building articles ───────────────────────────────────────────────────────────
Writing 'articles/index.html'
Reading 'vignettes/cobalt_A0_basic_use.Rmd'
Writing 'articles/cobalt_A0_basic_use.html'
Reading 'vignettes/cobalt_A1_other_packages.Rmd'
##[error]Error: Failed to render RMarkdown

This looks like it's an issue with my Appendix 1 vignette, but the Rmarkdown seems to render just fine locally (using knit in RStudio) and on the package website itself. There doesn't seem to be anything unusual about the block of code where it appears to error. Thanks for your help.

[hadley]

I've made a fix to the development version — it's unlikely to actually resolve the problem, but it at least now prints the complete RMarkdown error instead of just the first 1000 characters. That will hopefully allow you to figure out what's going on.

[ngreifer]

Thanks for doing that. I was able to see the full error, and it was this:

Loading required package: tcltk
##[error]Error: package or namespace load failed for 'tcltk':
 .onLoad failed in loadNamespace() for 'tcltk', details:
  call: fun(libname, pkgname)
  error: X11 library is missing: install XQuartz from xquartz.macosforge.org
Quitting from lines 308-315 (cobalt_A1_other_packages.Rmd) 
Error : package 'tcltk' could not be loaded

Not sure how this can be resolved within the GitHub Action environment.

[kpj]

@ngreifer: r-lib/actions#78 (comment) might be the solution you're looking for.