I downloaded rtools and then command install.packages("plyr") and it said trying url "https://ccran.rstudio.com/bin/windows/contrib/4.1/plyr_1.8.6.zip" content type "application zil" length 1496320 bytes (1.4 mb) downloaded 1.4mb
Package "plyr" successfully unpacked and md5 sums checked.
Does that mean it's working? Because rcpp packages wasnt mentioned there.
R Installing-R-and-RStudio-on-Windows 08-09 min 30-40 sec