Applies the most recent snapshot to the project's private library.
restore(project = NULL, overwrite.dirty = FALSE, prompt = interactive(), dry.run = FALSE, restart = !dry.run)
The project directory. When in packrat mode, if this is
then the directory associated with the current packrat project is used. Otherwise,
the project directory specified is used.
A dirty package is one that has been changed since the
last snapshot or restore. Packrat will leave these alone by default. If you
want to guarantee that
restore will put you in the exact state
represented by the snapshot being applied, use
overwrite.dirty = TRUE.
TRUE to prompt before performing potentially destructive
changes (package removals or downgrades);
FALSE to perform these
operations without confirmation.
TRUE, compute the changes to your packrat state that
would be made if a restore was performed, without actually executing them.
TRUE, restart the R session after restoring.
restore works by adding, removing, and changing packages so that the
set of installed packages and their versions matches the snapshot exactly.
There are three common use cases for
restore after copying a project to a new
machine to populate the library on that machine.
restore to apply library changes made by a
collaborator to your own library. (In general, you want to run
whenever you pick up a change to
restore to undo accidental changes made
to the library since the last snapshot.
restore cannot make changes to packages that are currently loaded. If
changes are necessary to currently loaded packages, you will need to restart
R to apply the changes (
restore will let you know when this is
necessary). It is recommended that you do this as soon as possible, because
any library changes made between running
restore and restarting R will
snapshot, the command that creates the snapshots applied with
status to view the differences between the most recent snapshot
and the library.