Get package dependencies

getDependencies(
  pkgs,
  dependencies = c("Depends", "Imports", "LinkingTo"),
  installed = TRUE,
  available = TRUE,
  base = FALSE,
  recommended = FALSE
)

Arguments

pkgs: character vector of package names
dependencies: character vector of dependency types to include. Choices are "Depends", "Imports", "LinkingTo", "Suggests", and "Enhances". Defaults to c("Depends", "Imports", "LinkingTo").
installed: Logical indicating whether to pull dependency information from installed packages. Defaults to TRUE.
available: Logical indicating whether to pull dependency information from available packages. Defaults to TRUE.
base: Logical indicating whether to include dependencies on base packages that are included in the R installation. Defaults to FALSE.
recommended: Logical indicating whether to include dependencies on recommended packages that are included in the R installation. Defaults to FALSE.

Value

A character vector of package names.

Details

This function recursively constructs the list of dependencies for the packages given by pkgs. By default, the dependency information is extracted from both installed and available packages. As a consequence, it works both for local and CRAN packages.

Note

If available=TRUE R will attempt to access the currently selected CRAN repository, prompting for one if necessary.

Author

Gregory R. Warnes greg@warnes.net based on the non exported utils:::getDependencies and utils:::.clean_up_dependencies2.

Examples


if (FALSE) { # \dontrun{
## A locally installed package
#' getDependencies("MASS", installed = TRUE, available = FALSE)

## A package on CRAN
getDependencies("gregmisc", installed = FALSE, available = TRUE)


## Show base and recommended dependencies
getDependencies("MASS", available = FALSE, base = TRUE, recommended = TRUE)

## Download the set of packages necessary to support a local package
deps <- getDependencies("MyLocalPackage", available = FALSE)
download.packages(deps, destdir = "./R_Packages")
} # }