Retrieves package dependencies.

Performs recursive retrieve for Depends, Imports and LinkLibrary. Performs non-recursive retrieve for Suggests.

Usage

pkgDep(
  pkg,
  availPkgs,
  repos = getOption("repos"),
  type = "source",
  depends = TRUE,
  suggests = TRUE,
  enhances = FALSE,
  includeBasePkgs = FALSE,
  Rversion = R.version,
  quiet = FALSE,
  ...
)

Arguments

pkg

Character vector of packages.

availPkgs

Data frame with an element called package. The package element is a vector of available packages. Defaults to reading this list from CRAN, using available.packages()

repos

URL(s) of the 'contrib' sections of the repositories, e.g. "https://cran.us.r-project.org". Passed to available.packages()

type

Possible values are (currently) "source", "mac.binary" and "win.binary": the binary types can be listed and downloaded but not installed on other platforms. Passed to download.packages().

depends

If TRUE, retrieves Depends, Imports and LinkingTo dependencies (non-recursively)

suggests

If TRUE, retrieves Suggests dependencies (non-recursively)

enhances

If TRUE, retrieves Enhances dependencies (non-recursively)

includeBasePkgs

If TRUE, include base R packages in results

Rversion

Version of R (only used if type is not source.) Defaults to R.version, but this can be specified as any of the following formats:

• a character string with the two digit R version, e.g. "3.1"

• a list with components major and minor

• the result of getRversion()

• the result of R.version

quiet

If TRUE, suppresses warnings

...

Other arguments passed to available.packages()

Value

character vector of package names

See also

Other dependency functions: basePkgs(), makeDepGraph(), plot.pkgDepGraph()

Examples

if (interactive()) {
  pkgDep(pkg = c("ggplot2", "plyr", "reshape2"),
         repos = c(CRAN = "https://cloud.r-project.org")
  )
  
  pdb <- cranJuly2014
  pdb <- pkgAvail(repos = c(CRAN = getOption("minicran.mran")))
  
  pkgDep(pkg = c("ggplot2", "plyr", "reshape2"), pdb)
  
}