>=dev-lang/R-3.1.0
sci-CRAN/rlang
sci-CRAN/ggplot2

r_suggests_backports?
      ( sci-CRAN/backports )

r_suggests_covr?
      ( sci-CRAN/covr )

r_suggests_dplyr?
      ( sci-CRAN/dplyr )

r_suggests_knitr?
      ( sci-CRAN/knitr )

r_suggests_rmarkdown?
      ( sci-CRAN/rmarkdown )

r_suggests_stringi?
      ( sci-CRAN/stringi )

r_suggests_testthat?
      ( sci-CRAN/testthat )

dev-lang/R:=