[R-sig-Debian] Cannot install R language

[Dirk Eddelbuettel]

Please run the command 'apt-cache policy r-base-core'.

On my Ubuntu 14.04 system, I get

edd at max:~$ apt-cache policy r-base-core
r-base-core:
  Installed: 3.1.1-1trusty0
  Candidate: 3.1.1-1trusty0
  Version table:
 *** 3.1.1-1trusty0 0
        500 http://cran.rstudio.com/bin/linux/ubuntu/ trusty/ Packages
        100 /var/lib/dpkg/status
     3.1.0-1trusty0 0
        500 http://cran.rstudio.com/bin/linux/ubuntu/ trusty/ Packages
     3.0.2-1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages


as I had added the CRAN repo (via the rstudio mirror / CDN).  

Needless to say, this resolves fine and I had 3.1.0 installed and already
upgraded without issues to 3.1.1.

Your system must have something nonstandard / old left over as libtiff4 is
old.   

Maybe you simply didn't update the package cache -- 'sudo apt-get update'.

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org