@adamhsparks @eliocamp I wrote a quick general guide a little while ago: https://petejon.es/posts/2025-01-29-using-neovim-for-r/ it could use an update but overall it might still be helpful.

No off-the-shelf tooling for plots that I'm aware of - Neovim is ultimately a TUI so graphics need to be handled in a separate window. I just use my window manager to pin the plot window that R spawns and have no problems at all, and httpgd can be useful for adding some extra functionality too.