bundle                  Bundles a package and it's dependencies into a
                        library.
compare_versions        Compares the requested version to the available
                        version using the compare operator.
construct_r_libs_user   Constructs a new R_LIBS_USER setting using the
                        current libraries and the new bundle library.
create_mock_packages    Creates a series of mock packages, useful for
                        testing and experimentation.
create_package          Creates a package matching the given
                        description and dependencies.
create_package_description
                        A Utility function for creating rbundler
                        scenarios.
dependency_clauses      Creates the 'Depends:' clause by concatenating
                        individual packages and adding their compare
                        clauses.
determine_version_to_install
                        Determines the version to install by comparing
                        available versions to the required version and
                        compare.
find_available_versions
                        Retrieves a list of available versions for a
                        package.
install_version         Install specified version or relative version
                        of a CRAN package.
load_available_packages
                        Loads available packages from the given
                        repository.
mock_dependency         Creates a mock dependency - corresponding to a
                        real package - for use in testing and
                        experimentation.
rbundler                A package dependency management utility.
read_archive_rds        Loads archive from CRAN-like repositories.
                        Returns empty list for non-CRAN (i.e. flat)
                        repositories.
update_current_environment
                        Updates the current environment.
update_renviron_file    Updates a .Renviron file in the given path.
validate_compare        Validates the compare clause.
validate_installed_package
                        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.
