Just install.packages(), he said. It’s easy, he said. (Unknown R tutor) CRAN has spoiled us. Most of the time, it’s a breeze to add new packages to our environment. Just issue the command, and the package becomes available. If you’re an RStudio user, you can simply start typing the package name select it from a list and it’s done. This is because R and CRAN work together to handle your package’s R dependencies: other packages that are needed for the functioning of the package you actually want to use.