validate_installed_package

package

version

compare


Checks whether a package has already been installed. If it
has, and if the version corresponds to the required package
version, then it returns TRUE. If it has been installed and
the version does not correspond to the required version,
then it throws an exception. Otherwise, it returns false.


Rbundler manages a project-specific library for dependency
package installation. By specifying dependencies in a DESCRIPTION file
in a project's root directory, one may install and use dependencies
in a repeatable fashion without requiring manual maintenance.
rbundler creates a project-specific R library in
`PROJECT_ROOT/.Rbundle` (by default) and a project-specific
`R_LIBS_USER` value, set in `PROJECT_ROOT/.Renviron`. It supports
dependency management for R standard "Depends", "Imports",
"Suggests", and "LinkingTo" package dependencies. rbundler also
attempts to validate and install versioned dependencies, such
as ">=", "==", "<=". Note that, due to the way R manages package
installation, differing nested versioned dependencies are not
allowed. For example, if your project depends on packages A (== 1),
and B (== 2), but package A depends on B (== 1), then a nested
dependency violation will cause rbundler to error out.

Yoni Ben-Meshulam

rbundler

Rbundler manages an application's dependencies systematically
and repeatedly.

validate_installed_package function

Checks whether a package has already been installed. If it has, and if the version corresponds to the
required package version, then it returns TRUE. If it has been installed and the version does
not correspond to the required version, then it throws an exception. Otherwise, it returns false.

Description

Usage

Arguments

Value