R: Install specified version or relative version of a CRAN...
install_version
R Documentation
Install specified version or relative version of a CRAN package.
Description
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
has_devel.
Usage
install_version(package, version = NA, compare = NA,
repos = getOption("repos"), type = getOption("pkgType"), ...)
Arguments
package
package name
version
If the specified version is NA or the same
as the most recent version of the package, this function
simply calls install. Otherwise, it looks
at the list of archived source tarballs and tries to
install an older version instead.
compare
If specified, and if the version is
specified, enforces comparison of the package version.
Valid values: ==, <, >, >=, or <=
...
Other arguments passed on to
install.
repos
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".
Can be NULL to install from local files (with
extension ‘.tar.gz’ for source packages).
type
character, indicating the type of package to
download and install.
Possible values are "source",
"mac.binary.leopard" and "win.binary": the
binary types can be listed and downloaded but not
installed on other platforms.
The default is the appropriate binary type on Windows and
on the CRAN binary OS X distribution, otherwise
"source". For the platforms where binary packages
are the default, an alternative is "both" which
means ‘try binary if available, otherwise try
source’. (This will only choose the binary package if
its version number is no older than the source version.
In interactive use it will ask before attempting to
install source packages.)
Details
Note: This is an updated version of devtools
'install_version' It has been fixed to work with the latest
CRAN repository and updated to support version comparisons
(i.e. >, ==, <, etc.)
providing 
.