using RStudio latest version, R4.0
RStan geting started instructions:
Step 2 Checking Tool chain:
after entering below command and choosing yes nothing happens. Rtools not being installed.
> pkgbuild::has_build_tools(debug = TRUE)
[1] FALSE
Operating System: Windows 10
Interface Version: RStudio 1.2.5042, R4.0.0
Compiler/Toolkit: