[R] Can one perform a dry run of a package installation?

[Duncan Murdoch]

On 09/04/2019 5:46 p.m., Sebastien Bihorel wrote:
> Hi,
> 
> Is there a way to do a dry run of install.packages() or update.packages() to simulate how an R environment would be modified by the installation or update of a particular set of packages (with their dependencies)?
> 
> I am particularly interested in finding how dependencies would be recursively updated to newer versions.

Set the `lib` parameter of `install.packages` to an empty directory, and 
see what gets installed there.

Duncan Murdoch