Hi, Duncan et al.:

Thanks very much to Duncan for his suggestion. I did added the line Duncan suggested in three slightly different places. That fixed the problems with missing tex and pdflatex, but exposed two new problems:


          On Windows and ubuntu (both release and devel) I now get:


LaTeX Error: File `tikz.sty' not found.


          On macOS, I got a different error:


there is no package called 'ks'


I added "ks" to "suggests" in DESCRIPTON but still got "no package called 'ks'. And I studied README in https://github.com/r-lib/actions, and I did some other searches without figuring out how to fix "`tikz.sty' not found."


          For more details, see:


https://github.com/sbgraves237/sos


          Suggestions?
          Thanks,
          Spencer


On 5/23/21 4:43 AM, Duncan Murdoch wrote:
On 22/05/2021 10:05 p.m., Spencer Graves wrote:
Hello:


      What do you suggest I do to enable GitHub Action to process "sos.Rnw"
properly?


      The development version of my "sos" package passes "R CMD check" on
my Mac but fails in all four platforms under GitHub Action on


https://github.com/sbgraves237/sos


      The error messages on macOS and Ubuntu release and devel all seems
the same:


            * Error: processing vignette 'sos.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'sos.tex' failed.  Messages: You don't have a
working TeX binary (tex) installed anywhere in your PATH, and texi2dvi
cannot proceed without one.


      The error message under Windows seemed crudely similar but different:


            * Error: processing vignette 'sos.Rnw' failed with diagnostics:
pdflatex is not available


      What do you suggest?

The virtual machines that run Github actions have lots of tools installed, but apparently not LaTeX.  So you need to figure out the "step" to install it.  I'm not currently using Rnw with Github actions, but by looking at the README for https://github.com/r-lib/actions, I'm pretty sure all you need is to add

   - uses: r-lib/actions/setup-tinytex@v1

somewhere after

   - uses: actions/checkout@master

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