[R-sig-Debian] Can't install R 2.15 and r-recommended on Ubuntu

[Kirill Müller]

Hi

When attempting to install R in version 2.15 (for testing purposes) on a 
clean Ubuntu 12.04 machine from the CRAN Ubuntu repository, I can't seem 
to install r-recommended:

+ sudo apt-get install --no-install-recommends 
r-base-dev=2.15.3-1precise0precise1 r-base-core=2.15.3-1precise0precise1 
r-recommended=2.15.3-1precise0precise1 qpdf

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-recommended : Depends: r-cran-boot (>= 1.2.19) but it is not going to 
be installed

Depends: r-cran-cluster (>= 1.9.6-2) but it is not going to be installed

Depends: r-cran-foreign (>= 0.7-2) but it is not going to be installed

Depends: r-cran-kernsmooth (>= 2.2.14) but it is not going to be installed

Depends: r-cran-lattice (>= 0.10.11) but it is not going to be installed

Depends: r-cran-mgcv (>= 1.1.5) but it is not going to be installed

Depends: r-cran-nlme (>= 3.1.52) but it is not going to be installed

Depends: r-cran-rpart (>= 3.1.20) but it is not going to be installed

Depends: r-cran-survival (>= 2.13.2-1) but it is not going to be installed

Depends: r-cran-mass but it is not going to be installed

Depends: r-cran-class but it is not going to be installed

Depends: r-cran-nnet but it is not going to be installed

Depends: r-cran-codetools but it is not going to be installed

Depends: r-cran-matrix but it is not going to be installed

E: Unable to correct problems, you have held broken packages.


Is there a way to automatically infer the versions for the R packages 
r-recommends depends on, and install these? Thanks!


Cheers

Kirill