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

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