A atualização R remove todos os pacotes R

A atualização R remove todos os pacotes R

Estou executando o Ubuntu 20.04.2 (5.8.0-53-genérico) e tenho a versão R 4.0.5 (31/03/2021) - "Shake and Throw" instalado. Hoje atualizei o sistema com sudo apt updatee sudo apt upgradede repente todos os meus pacotes R sumiram (só sobraram os pacotes base). Felizmente, eu tinha um instantâneo do Timeshift de ontem para poder voltar à pré-atualização. Quando corro agora sudo apt updatee apt list --upgradablerecebo esta lista:

gstreamer1.0-alsa/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
gstreamer1.0-gl/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
gstreamer1.0-plugins-base-apps/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
gstreamer1.0-plugins-base/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
gstreamer1.0-x/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
initramfs-tools-bin/focal-updates 0.136ubuntu6.5 amd64 [upgradable from: 0.136ubuntu6.4]
initramfs-tools-core/focal-updates,focal-updates 0.136ubuntu6.5 all [upgradable from: 0.136ubuntu6.4]
initramfs-tools/focal-updates,focal-updates 0.136ubuntu6.5 all [upgradable from: 0.136ubuntu6.4]
libgstreamer-gl1.0-0/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
libgstreamer-plugins-base1.0-0/focal-updates,focal-security 1.16.2-4ubuntu0.1 amd64 [upgradable from: 1.16.2-4]
liblzf1/focal-updates,focal-security 3.6-2~ubuntu1.20.04.2 amd64 [upgradable from: 3.6-2~ubuntu1.20.04.1]
libssl-dev/focal-updates 1.1.1f-1ubuntu2.4 amd64 [upgradable from: 1.1.1f-1ubuntu2.3]
libssl1.1/focal-updates 1.1.1f-1ubuntu2.4 amd64 [upgradable from: 1.1.1f-1ubuntu2.3]
openssl/focal-updates 1.1.1f-1ubuntu2.4 amd64 [upgradable from: 1.1.1f-1ubuntu2.3]
r-base-core/focal-cran40 4.1.0-1.2004.0 amd64 [upgradable from: 4.0.5-1.2004.0]
r-base-dev/focal-cran40 4.1.0-1.2004.0 all [upgradable from: 4.0.5-1.2004.0]
r-base-html/focal-cran40 4.1.0-1.2004.0 all [upgradable from: 4.0.5-1.2004.0]
r-base/focal-cran40 4.1.0-1.2004.0 all [upgradable from: 4.0.5-1.2004.0]
r-doc-html/focal-cran40 4.1.0-1.2004.0 all [upgradable from: 4.0.5-1.2004.0]
r-recommended/focal-cran40 4.1.0-1.2004.0 all [upgradable from: 4.0.5-1.2004.0]
virtualbox-dkms/focal-updates,focal-security 6.1.16-dfsg-6~ubuntu1.20.04.2 amd64 [upgradable from: 6.1.16-dfsg-6~ubuntu1.20.04.1]
virtualbox-qt/focal-updates,focal-security 6.1.16-dfsg-6~ubuntu1.20.04.2 amd64 [upgradable from: 6.1.16-dfsg-6~ubuntu1.20.04.1]
virtualbox/focal-updates,focal-security 6.1.16-dfsg-6~ubuntu1.20.04.2 amd64 [upgradable from: 6.1.16-dfsg-6~ubuntu1.20.04.1]

Alguém já teve esse problema também e como posso atualizar tudo sem perder os pacotes R novamente?

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