R devel - Dec 2020 - Ignore Sites Option For libPaths

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
>
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	[[alternative HTML version deleted]]

>>>>> Gabriel Becker 
>>>>>     on Tue, 8 Dec 2020 17:09:57 -0800 writes:
    > 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

I agree with Gabe here.
Also, R allows the user to remove their own home directory, it
should also allow to get a .libPaths() which contains nothing compulsory
but R's own .Library {as only that can contain 'base' !}

Martin


    > 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