I prefer LuaTeX over XeTeX mainly because of the greater support of the package
microtype. Therefore, I would like to include my results from R in a document typeset with LuaTeX, through a Sweave file - which I prefer over Rmarkdown for the easier control over the TeX packages and settings.
By default RStudio does not compile the Sweave files with LuaTeX, but I have seen here and here that it is possible to do so. My dounts are: is there any newer/better solution (the first link is 4yo)? are planning to add the LuaTeX option in the setting menu since it seems to work well for the guy asking?
Thanks for the help,