Refresh the local cache of available packages

Query the active R package repositories for available packages, and update the in-memory cache of those packages.

Usage

refresh()

Value

A list of package databases, invisibly -- one for each repository currently active in the R session. Note that this function is normally called for its side effects.

Details

Note that R also maintains its own on-disk cache of available packages, which is used by available.packages(). Calling refresh() will force an update of both types of caches. renv prefers using an in-memory cache as on occasion the temporary directory can be slow to access (e.g. when it is a mounted network filesystem).

Examples

if (FALSE) {

# check available packages
db <- available.packages()

# wait some time (suppose packages are uploaded / changed in this time)
Sys.sleep(5)

# refresh the local available packages database
# (the old locally cached db will be removed)
db <- renv::refresh()

}