[R] update.packages() after updating R version

[Duncan Murdoch]

On 26/05/2018 7:24 PM, Rich Shepard wrote:
>     R-3.5.0 is installed here. When I tried to update installed packages
> errors were reported when their dependencies were built under a prior
> version of R.
> 
>     Reading ?update.packages() I did not see an option that would
> automatically update dependences built under an earlier version of R. Is
> there such an option that I missed?
> 

I think you want update.packages(ask = FALSE, checkBuilt = TRUE) to 
automatically update all packages and their dependencies.  With the 
default checkBuilt=FALSE, R just sees whether a dependency is a high 
enough version number.  But packages installed under R x.y.z are not 
usable in R x.y+1.w.

Duncan Murdoch

>     Alternatively, is there a function I can run that will rebuild all
> installed packages after I upgrade R versions?
> 
> Regards,
> 
> Rich
> 
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