On Sep 28, 2015, at 10:38 PM, Chris Yang wrote: > Hello, > > I am new to R and just installed R and RStudio on a Mac. > > I have a question about managing packages in R. I wonder if there is > the need and functionality to periodically clean up packages installed > via RStudio, e.g. older versions, files downloaded for installation, > etc. Does the update remove the older version completely before > installing a new one? And what about installation from source? > > I ask because Homebrew (a package manager for OS X) keeps older > versions of a package and the files necessary for past installations > upon updates but it offers a command to clean up these stuff too. I > wonder if it is the same for R.
If you have older versions of R in a Framework directory tree, those packages are kept but if you update a package in the current major version it will be over-written. That is not a Mac specific behavior. You may be able to recover older versions with a Time Machine copy, but I'm not clear why you would want to do so. You can also pull source copies of earlier package version in the CRAN archives. -- David Winsemius Alameda, CA, USA _______________________________________________ R-SIG-Mac mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-mac
