R: Find Reverse Dependencies

dependsOnPkgs {tools}

R Documentation

Find Reverse Dependencies

Description

Find ‘reverse’ dependencies of packages, that is those packages which depend on this one, and (optionally) so on recursively.

Usage

dependsOnPkgs(pkgs,
              dependencies = "strong",
              recursive = TRUE, lib.loc = NULL,
              installed =
              utils::installed.packages(lib.loc, fields = "Enhances"))

Arguments

`pkgs`	a character vector of package names.
`dependencies`	a character vector listing the types of dependencies, a subset of `c("Depends", "Imports", "LinkingTo", "Suggests", "Enhances")`. Character string `"all"` is shorthand for that vector, character string `"most"` for the same vector without `"Enhances"`, character string `"strong"` (default) for the first three elements of that vector.
`recursive`	logical: should reverse dependencies of reverse dependencies (and so on) be included?
`lib.loc`	a character vector of R library trees, or `NULL` for all known trees (see `.libPaths`).
`installed`	a result of calling `installed.packages`.

Value

A character vector of package names, which does not include any from pkgs.

Examples


## there are few dependencies in a vanilla R installation:
## lattice may not be installed
dependsOnPkgs("lattice")