Install specified version of a CRAN package.
If you are installing an package that contains compiled code, you will
need to have an R development environment installed. You can check
if you do by running
devtools::has_devel (you need the
devtools package for this).
install_version(package, version = NULL, repos = getOption("repos"), type = getOption("pkgType"), ...)
If the specified version is NULL or the same as the most recent version of the package, this function simply calls
install.packages. Otherwise, it looks at the list of archived source tarballs and tries to install an older version instead.
character vector, the base URL(s) of the repositories to use, e.g., the URL of a CRAN mirror such as
"http://cran.us.r-project.org". For more details on supported URL schemes see
NULLto install from local files, directories or URLs: this will be inferred by extension from
pkgsif of length one.
character, indicating the type of package to download and install. Will be
"source"except on Windows and some OS X builds: see the section on ‘Binary packages’ for those.
Other arguments passed on to