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Where each loaded package came from

Source: R/repro.R
capture_dependencies.Rd

Records, for every package named, its version and enough about its provenance to find the same one again: the library it was loaded from, the repository it was installed from, and – for a package installed from a remote – the remote's URL and commit.

Usage

capture_dependencies(packages = loadedNamespaces())

Arguments

packages

Character vector of package names. Defaults to the namespaces currently loaded.

Value

A data frame with one row per package: package, version, library, repository, remote_url, remote_sha, built. Unavailable fields are NA rather than omitted, so a reader can see that the information was absent rather than forgotten.

Details

Why versions alone are not enough. Two installations can report the same version and differ: one built from CRAN, one from a fork, one from a local R CMD INSTALL of a working tree with uncommitted changes. A version number identifies an intention; the repository and commit identify what was actually loaded.

See also

capture_environment(), environment_diff().

Examples

deps <- capture_dependencies(c("stats", "utils"))
deps[, c("package", "version")]
#>   package version
#> 1   stats   4.6.1
#> 2   utils   4.6.1

# a package with no repository field records that fact
is.na(capture_dependencies("stats")$repository)
#> [1] TRUE