I just used rig on Windows to install two R releases and the R-devel. This works very nicely and promises to solve the pain of updating R on Windows (not to mention having several versions side by side). However I'm running into following issues:

1. I set the repos option in my .Rprofile. R installed with rig sets default repos to RStudio package manager rather than CRAN (RSPM is the first element of getOption("repos")). Why is that? Still, thanks for --without-cran-mirror and --without-rspm.
2. rig creates shortcuts on Desktop for each R version added. Is it possible to choose not to?

Thanks for developing this, @gaborcsardi .

Edit: Dropped the item about the install.packages() shim.