I have been trying for days now. I would like to upgrade to the latest version of R. I have followed advice found on this link : Problem installing R4.0 on LInux Mint 19.3
but for me the problem persists for me. When I do
echo -e "\ndeb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/" | sudo tee -a /etc/apt/sources.list
then
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
sudo apt-get install r-base
I get this
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
r-base : Depends: r-recommended (= 4.0.5-1.1804.0) but it is not going to be installed
W: Target Packages (Packages) is configured multiple times in /etc/apt/sources.list:5 and /etc/apt/sources.list:7
W: Target Translations (en_US) is configured multiple times in /etc/apt/sources.list:5 and /etc/apt/sources.list:7
W: Target Translations (en) is configured multiple times in /etc/apt/sources.list:5 and /etc/apt/sources.list:7
E: Unable to correct problems, you have held broken packages.
If anyone has an idea of how to solve this I would be eternally grateful.