>=dev-lang/R-3.5
sci-CRAN/ggplot2

r_suggests_car?
      ( sci-CRAN/car )

r_suggests_devtools?
      ( sci-CRAN/devtools )

r_suggests_knitr?
      ( sci-CRAN/knitr )

r_suggests_metan?
      ( sci-CRAN/metan )

r_suggests_rmarkdown?
      ( sci-CRAN/rmarkdown )

r_suggests_testthat?
      ( sci-CRAN/testthat )

r_suggests_usethis?
      ( sci-CRAN/usethis )

dev-lang/R:=