Rhinoceros  filed a request to merge r-vimcom  into nvim-r :
Upstream has discontinued vim-r, and replaced it with nvim-r . r-vimcom was previously required for vim-r, but has now been included in nvim-r.
 https://aur.archlinux.org/account/Rhinoceros/  https://aur.archlinux.org/pkgbase/r-vimcom/  https://aur.archlinux.org/pkgbase/nvim-r/
Request #5075 has been accepted by felixonmars .