I cant install R-base-core because libpng12-0 cannot be installed. trying to install just libpng12-0 i get
Package 'libpng12-0' has no installation candidate
I have seen a number of posts about adding different repos, but all of them either did nothing or gave Updating from such a repository can't be done securely, and is therefore disabled by default
Here is the full failure:
The following packages have unmet dependencies:
r-base-core : Depends: libpng12-0 (>= 1.2.13-4) 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.
calling uname -a gives
4.13.0-16-generic #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
running this command:
cat /etc/apt/sources.list
#
deb cdrom:[Ubuntu-Server 17.10 Artful Aardvark - Release amd64 (20171017.1)]/ artful main restricted
deb cdrom:[Ubuntu-Server 17.10 Artful Aardvark - Release amd64 (20171017.1)]/ artful main restricted
See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ artful main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ artful main restricted
Major bug fix updates produced after the final release of the
distribution.
deb http://us.archive.ubuntu.com/ubuntu/ artful-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates main restricted
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team. Also, please note that software in universe WILL NOT receive any
review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ artful universe
deb-src http://us.archive.ubuntu.com/ubuntu/ artful universe
deb http://us.archive.ubuntu.com/ubuntu/ artful-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates universe
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team, and may not be under a free licence. Please satisfy yourself as to
your rights to use the software. Also, please note that software in
multiverse WILL NOT receive any review or updates from the Ubuntu
security team.
deb http://us.archive.ubuntu.com/ubuntu/ artful multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ artful multiverse
deb http://us.archive.ubuntu.com/ubuntu/ artful-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ artful-updates multiverse
N.B. software from this repository may not have been tested as
extensively as that contained in the main release, although it includes
newer versions of some applications which may provide useful features.
Also, please note that software in backports WILL NOT receive any review
or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse
Uncomment the following two lines to add software from Canonical's
'partner' repository.
This software is not part of Ubuntu, but is offered by Canonical and the
respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu artful partner
deb-src http://archive.canonical.com/ubuntu artful partner
deb http://security.ubuntu.com/ubuntu artful-security main restricted
deb-src http://security.ubuntu.com/ubuntu artful-security main restricted
deb http://security.ubuntu.com/ubuntu artful-security universe
deb-src http://security.ubuntu.com/ubuntu artful-security universe
deb http://security.ubuntu.com/ubuntu artful-security multiverse
deb-src http://security.ubuntu.com/ubuntu artful-security multiverse
deb http://cran.rstudio.com/bin/linux/ubuntu xenial/
deb https://mirror.ibcp.fr/pub/CRAN/bin/linux/ubuntu xenial/
deb-src https://mirror.ibcp.fr/pub/CRAN/bin/linux/ubuntu xenial/
I spent quite a bit of time trying to install R tonight.
