[R] Difficulty Installing Packages

[Uwe Ligges]

On Windows, if you load a dll, this is locked.
Hence, for package installations, close all R instances, start one 
without loading packages and then update packages.

Best,
Uwe Ligges




On 26.08.2017 15:18, Bill Denney wrote:
> Hi,
> 
>   
> 
> When installing packages in Windows (currently using Windows 10 with all
> service packs), occasionally, I get a warning similar to the following:
> 
>   
> 
> package 'Rcpp' successfully unpacked and MD5 sums checked
> 
> Warning in install.packages :
> 
>    unable to move temporary installation 'C:\Users\William
> Denney\Documents\R\win-library\3.4\file32701900456\Rcpp' to
> 'C:\Users\William Denney\Documents\R\win-library\3.4\Rcpp'
> 
>   
> 
> This can occur when installing many packages where the package that could
> not be moved (e.g. Rcpp) is a dependency.  In the end, the package where the
> warning is issued is not available to load, and I have to spend time
> figuring out why.  The usual reason is that for some reason during the
> package install process the library directory ("C:\Users\William
> Denney\Documents\R\win-library\3.4\") has been set to partially or fully
> read-only.
> 
>   
> 
> I have a couple of questions:
> 
>   
> 
> *	Why is the directory set to read-only?  It happens almost every time
> that I install packages that are compiled.  (It doesn't seem to occur with
> interpreted-only packages.)
> *	Shouldn't that warning be an error or at least prevent the packages
> that depend on the one that couldn't be moved from being installed?  The way
> that it tends to go, package installation completes with that warning, and
> then I have to clean up the mess of missing dependencies.
> 
>   
> 
> Thanks,
> 
>   
> 
> Bill
> 
> 
> 	[[alternative HTML version deleted]]
> 
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