Estou recebendo dependências não satisfeitas quando tento instalar o R no Debian 9 (extensão). Especificamente, executando:
$ sudo apt-get install r-base-core
resulta em
Reading package lists... Done
Building dependency tree
Reading state information... Done
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-core : Depends: libjpeg8 (>= 8c) but it is not installable
Recommends: r-recommended but it is not going to be installed
Recommends: r-base-dev 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.
Alguém poderia ajudar? Eu pesquisei em torno dessa questão, mas não consigo encontrar nenhuma correção.
Obrigado
EDIT: A saída de apt policy é:
Package files:
100 /var/lib/dpkg/status
release a=now
500 http://repository.spotify.com stable/non-free i386 Packages
release v=0.4,o=Spotify LTD,a=stable,n=stable,l=Spotify Public
Repository,c=non-free,b=i386
origin repository.spotify.com
500 http://repository.spotify.com stable/non-free amd64 Packages
release v=0.4,o=Spotify LTD,a=stable,n=stable,l=Spotify Public
Repository,c=non-free,b=amd64
origin repository.spotify.com
500 https://repo.skype.com/deb stable/main amd64 Packages
release o=. stable,a=stable,n=stable,l=. stable,c=main,b=amd64
origin repo.skype.com
500 https://desktop-download.mendeley.com/download/apt stable/main i386
Packages
release n=stable,c=main,b=i386
origin desktop-download.mendeley.com
500 https://desktop-download.mendeley.com/download/apt stable/main amd64
Packages
release n=stable,c=main,b=amd64
origin desktop-download.mendeley.com
500 http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu
bionic/main i386 Packages
release v=18.04,o=LP-PPA-maarten-baert- simplescreenrecorder,a=bionic,n=bionic,l=SimpleScreenRecorder,c=main,b=i386
origin ppa.launchpad.net
500 http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu bionic/main amd64 Packages
release v=18.04,o=LP-PPA-maarten-baert-simplescreenrecorder,a=bionic,n=bionic,l=SimpleScreenRecorder,c=main,b=amd64
origin ppa.launchpad.net
500 http://deb.debian.org/debian stretch/main i386 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=i386
origin deb.debian.org
500 http://deb.debian.org/debian stretch/main amd64 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=amd64
origin deb.debian.org
500 https://dl.winehq.org/wine-builds/debian stretch/main i386 Packages
release v=9.0,o=dl.winehq.org,a=stable,n=stretch,l=winehq,c=main,b=i386
origin dl.winehq.org
500 https://dl.winehq.org/wine-builds/debian stretch/main amd64 Packages
release v=9.0,o=dl.winehq.org,a=stable,n=stretch,l=winehq,c=main,b=amd64
origin dl.winehq.org
500 http://cran.rstudio.com/bin/linux/debian stretch-cran34/ Packages
release o=CRAN,a=stretch-cran34,n=stretch-cran34,l=CRAN Backports,c=
origin cran.rstudio.com
500 http://cran.rstudio.com/bin/linux/ubuntu trusty/ Packages
release v=14.04,o=CRAN,a=trusty,n=trusty,l=CRAN,c=
origin cran.rstudio.com
500 http://ftp.uk.debian.org/debian jessie/main i386 Packages
release v=8.10,o=Debian,a=oldstable,n=jessie,l=Debian,c=main,b=i386
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian jessie/main amd64 Packages
release v=8.10,o=Debian,a=oldstable,n=jessie,l=Debian,c=main,b=amd64
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch-updates/main i386 Packages
release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=i386
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch-updates/main amd64 Packages
release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main,b=amd64
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/contrib i386 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=contrib,b=i386
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/contrib amd64 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=contrib,b=amd64
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/non-free i386 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=non-free,b=i386
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/non-free amd64 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=non-free,b=amd64
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/main i386 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=i386
origin ftp.uk.debian.org
500 http://ftp.uk.debian.org/debian stretch/main amd64 Packages
release v=9.4,o=Debian,a=stable,n=stretch,l=Debian,c=main,b=amd64
origin ftp.uk.debian.org
Pinned packages: