Install an R package specifying repository
install.packages('RMySQL', repos='http://cran.us.r-project.org')
Other repositories:
https://ftp.yz.yamagata-u.ac.jp/pub/cran/
https://mirror.las.iastate.edu/CRAN/
...https://cran.r-project.org/mirrors.html
Install an R package into a user directory
.libPaths(.libPaths()[c(2,1,3)])
devtools::install_github("perishky/meffonym")
library(meffonym)
packageVersion("meffonym") # [1] ‘1.2.3’