|character vector of the names of packages. If
repos = NULL, a character vector of file paths.
|character vector giving the library directories where to install the packages.
|character vector, the base URL(s) of the repositories to use, can be
NULL to install from local files
|directory where downloaded packages are stored
|logical indicating whether to also install uninstalled packages which these packages depend on/link to/import/suggest (and so on recursively). Not used if
repos = NULL.
|Arguments to be passed to ‘download.file’ or to the functions for binary installs on OS X and Windows.