R devel - Dec 2020 - Ignore Sites Option For libPaths

On 8 December 2020 at 23:00, Dario Strbenac wrote:
| Could .libPaths gain an option to ignore all values other than the
user-specified new parameter? Currently, it takes the union of new and .Library
and .Library.site and there is no way to turn it off.

Are you use? It is constructed from looking at environment variables you could
set.

  edd at rob:~$ R_LIBS="/tmp" R_LIBS_SITE="/var" Rscript -e
'print(.libPaths())'
  [1] "/tmp"               "/var"              
"/usr/lib/R/library"
  edd at rob:~$ 

Dirk

-- 
https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org

Of course you can, but the ability to do something via R code and the
ability to do them by wrapping the invocation of R are not similar terms of
convenience, IMO.

I say that as someone who routinely does both type of thing.

~G

On Tue, Dec 8, 2020 at 4:07 PM Dirk Eddelbuettel <edd at debian.org>
wrote:
>
> On 8 December 2020 at 23:00, Dario Strbenac wrote:
> | Could .libPaths gain an option to ignore all values other than the
> user-specified new parameter? Currently, it takes the union of new and
> .Library and .Library.site and there is no way to turn it off.
>
> Are you use? It is constructed from looking at environment variables you
> could set.
>
>   edd at rob:~$ R_LIBS="/tmp" R_LIBS_SITE="/var"
Rscript -e
> 'print(.libPaths())'
>   [1] "/tmp"               "/var"              
"/usr/lib/R/library"
>   edd at rob:~$
>
> Dirk
>
> --
> https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
	[[alternative HTML version deleted]]

Good day,

That seems like a straightforward and reasonable thing to do, but:

~$ R_LIBS="/tmp" R_LIBS_SITE="/var" Rscript -e
'print(.libPaths())'
[1] "/dora/nobackup/biostat/Rpackages/v4"
"/dora/users/course/splus/library/R"
[3] "/usr/lib/R/site-library"            
"/usr/lib/R/library"

/tmp and /var exist of course.

--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia