This package isn’t on CRAN yet, but you can install it from this repository using the devtools package,
Alternatively, check the releases page for prebuilt versions.
Then install the package so that other Stencila packages and applications can detect it:
This package lets you run R code from inside Stencila Documents. When you start the Stencila Desktop it will be automatically detect the installed R package and you’ll be able to execute R code cells from within your documents.