search for: 1trusty1

...x/ubuntu trusty/" | sudo tee -a /etc/apt/sources.list sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9 sudo apt-get update And then a simple install call, which used to work just fine some time ago, tosses an error: ubuntu at test:~$ sudo apt-get -y install r-base=3.4.2-1trusty1 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 mo...

...o tee -a /etc/apt/sources.list > sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E084DAB9 > sudo apt-get update > > And then a simple install call, which used to work just fine some time ago, tosses an error: > > ubuntu at test:~$ sudo apt-get -y install r-base=3.4.2-1trusty1 > 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 n...