Estimate CRAN's date of packages — cran_date • repo.data

Check which CRAN dates are possible for a given packages and versions.

Usage

cran_date(versions)

cran_session(session = sessionInfo())

Arguments

versions: A data.frame with the packages names and versions
session: Session information.

Value

Last installation date from CRAN.

See also

Other utilities: cran_doom(), cran_snapshot(), duplicated_alias(), package_date(), package_repos(), repos_dependencies(), update_dependencies()

Examples

# ip <- installed.packages()
ip <- data.frame(Package = c("A3", "AER"), Version = c("1.0.0", "1.2-15"))
cran_date(ip)
#> [1] "2025-06-18 13:10:07 CEST"
cran_session()
#> [1] "2025-10-01 14:00:07 CEST"