Estimate CRAN's date — 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.

Examples

ip <- installed.packages()
cran_date(ip)
#> Warning: Omitting packages repo.data.
#> Maybe they were not on CRAN?
#> [1] "2025-06-22"
cran_session()
#> Warning: Omitting packages repo.data.
#> Maybe they were not on CRAN?
#> [1] "2025-06-22"