Platform field value version R version 4.1.0 (2021-05-18) os macOS Big Sur 10.16 system x86_64, darwin17.0 ui X11 language (EN) collate en_US.UTF-8 ctype en_US.UTF-8 tz US/Pacific date 2021-05-31 Dependencies package old new Δ vcr 1.0.0 1.0.2 * Revdeps