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Apoorva Babu avatar Ubuntu

Problems installing latest version of R in ubuntu 20.04 LTS

nl flag
Apoorva Babu

I've been trying to install R 4.1 on ubuntu and each time I get the same error

The following packages have unmet dependencies:
 r-base : Depends: r-base-core (>= 4.1.2-1.2004.0) but 3.6.3-2 is to be installed
          Depends: r-recommended (= 4.1.2-1.2004.0) but it is not going to be installed
          Recommends: r-base-html but it is not going to be installed
 r-base-dev : Depends: r-base-core (>= 4.1.2-1.2004.0) but 3.6.3-2 is to be installed
E: Unable to correct problems, you have held broken packages.

I looked it up and it appears to be a common problem and I tried all the solutions suggested - Uninstalled and reinstalled R, deleted and recreated a new /etc/apt/sources.list file, restored default repositories, made sure focal-cran40 is on the sources.list, updated and upgraded everything. But i'm still having the same problem. This is my code

sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/'
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
sudo apt update && sudo apt upgrade
sudo apt install r-base

Here is the output of apt-cache policy

sudo apt-cache policy r-base r-base-dev r-base-core r-recommended
r-base:
  Installed: (none)
  Candidate: 4.1.2-1.2004.0
  Version table:
     4.1.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.5-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.4-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.3-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
r-base-dev:
  Installed: (none)
  Candidate: 4.1.2-1.2004.0
  Version table:
     4.1.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.5-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.4-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.3-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
r-base-core:
  Installed: 3.6.3-2
  Candidate: 3.6.3-2
  Version table:
 *** 3.6.3-2 100
        100 /var/lib/dpkg/status
r-recommended:
  Installed: (none)
  Candidate: 4.1.2-1.2004.0
  Version table:
     4.1.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.1.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.5-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.4-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.3-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.2-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.1-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
     4.0.0-1.2004.0 500
        500 https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/ Packages
352
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N0rbert avatar
zw flag
N0rbert
Can't reproduce on fresh 20.04 LTS VM. Please add output of `apt-cache policy r-base r-base-dev r-base-core r-recommended` to the question by [editing it](https://askubuntu.com/posts/1373827/edit).
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Apoorva Babu avatar
nl flag
Apoorva Babu
I added the apt-cache policy. Any solutions to fix it ?
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N0rbert avatar
zw flag
N0rbert
Does this answer your question? [How do I enable the "Universe" repository?](https://askubuntu.com/questions/148638/how-do-i-enable-the-universe-repository) You have incorrect output of r-base-core (correct will include universe as orogin for https://packages.ubuntu.com/focal/r-base-core ).
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karel avatar
sa flag
karel
Does this answer your question? [How do I resolve unmet dependencies after adding a PPA?](https://askubuntu.com/questions/140246/how-do-i-resolve-unmet-dependencies-after-adding-a-ppa)
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Score:0
Alfredo Morales Pinzón avatar Ubuntu
us flag
Alfredo Morales Pinzón

I was having the same issue. It looks like the version of the default libraries are not compatible, specially r-base-core is only available in version 3.6.3-2 (check using apt-cache show r-base-core)

Given that some libraries were not available in version 4.x, I decided to install version 3.6 using the following code and it worked:

apt install r-recommended=3.6.3-2 r-base=3.6.3-2 r-base-dev=3.6.3-2
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