Ideally I would like to install 4.0 but just getting the base has been challenging.
Followed the instructions here https://www.digitalocean.com/community/ ... untu-18-04
Tried installing 4.0 and when that failed (with a similar message) tried 3.6 but got this (similar) message:
The following packages have unmet dependencies:
r-base : Depends: r-base-core (>= 3.6.3-1bionic) but it is not going to be installed
Depends: r-recommended (= 3.6.3-1bionic) but it is not going to be installed
Recommends: r-base-html but it is not going to be installed
Recommends: r-doc-html but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Then tried repair/update but still no luck.