>=dev-lang/R-3.5.0
sci-CRAN/spdep
virtual/spatial
sci-CRAN/Rcpp
sci-CRAN/Rcpp
sci-CRAN/RcppArmadillo

r_suggests_class?
      ( virtual/class )

r_suggests_knitr?
      ( sci-CRAN/knitr )

r_suggests_maptools?
      ( sci-CRAN/maptools )

r_suggests_markdown?
      ( sci-CRAN/markdown )

r_suggests_rcolorbrewer?
      ( sci-CRAN/RColorBrewer )

r_suggests_rgeos?
      ( sci-CRAN/rgeos )

r_suggests_sf?
      ( sci-CRAN/sf )

r_suggests_sp?
      ( sci-CRAN/sp )

r_suggests_tidyverse?
      ( sci-CRAN/tidyverse )

dev-lang/R:=