contrib.url
adds the appropriate type-specific path within a
repository to each URL in repos
.contrib.url(repos, type = getOption("pkgType"))
install.packages
.
repos
.type = "both"
this will use the source repository.setRepositories
to set options("repos")
,
the most common value used for argument repos
. available.packages
, download.packages
,
install.packages
. The ‘R Installation and Administration’ manual for how to
set up a repository.