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...y-cran3/" > /etc/apt/sources.list.d/r-cran.list apt-get install r-base-core=3.1.2* and I get the error: *Selected version '3.1.2-1~wheezycran3.0' (CRAN Backports:wheezy-cran3 [amd64]) for 'r-base-core'Some packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor 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 (&g...