[R] Can one get a list of recommended packages?

[Dr. David Kirkby]

R 2.10.1 is used in the Sage maths project. Several recommended packages 
(Matrix, class, mgcv, nnet, rpart, spatial, and survival) are failing to build 
on Solaris 10 (SPARC).

We would like to be able to get a list of the recommended packages for R 2.10.1, 
but ideally via a call to R, so it is not necessary to update that list every 
time a new version of R is released. We do not want to access the Internet to 
get this information.

Is there a way in R to list the recommended packages?

Better still, is there a way to list the recommended packages which have not 
been installed, so getting a list of any failures?

Dave