I’m happy to report that @BethanyG got interested enough in the R track to spend the last 48 hours (fairly continuously) adding a Jinja2-based test generator. We still need to beat on it some more to find the edge cases, but it currently looks good.
Along the way, the belief that Python-R interop is getting better all the time was pretty well vindicated. The (fairly) new R linter/styler Air turns out to be available in PyPI, so it can be pip-installed from the Python side as well as R-installed from CRAN. Polyglot data science for the win!
@ErikSchierboom, could you please add @BethanyG as an R maintainer? If necessary I could make the case that this up-and-coming young programmer deserves the status, but it would seem … gratuitous.