[Rd] RFC install.packages() changes

[Gabor Grothendieck]

Prof Brian Ripley <ripley <at> stats.ox.ac.uk> writes:

: install/update.packages() in R-devel has been enhanced in a few ways,
: notably to handle multiple repositories, and to allow packages to be 
: reinstalled under the current version of R.

The change to updating that I would like would be to check before 
downloading whether the package is open.  Right now using the 
update menu item in Windows it checks afterwards 
and if its open fails which means that one has to do the download all
over again.  If it failed before downloading it would save some
wasted downloads.