There are answered questions for how to install R packages which do not come in the r-essentials build for Jupyter. But the R version which comes with Anaconda Jupyter is sometimes back a level from the most recent at CRAN.
The trouble is that when packages outside of r-essentials are loaded, a warning is issued that the packages have been built with an R version which is more recent than that installed. Installation continues, but there clearly is the risk that because of the version skew between the packages and the R version, something could go wrong during execution.
Is there an always up-to-date r-essentials some place which can be used with Anaconda Jupyter?
This is for Windows 7, and R version 3.4.3.