[ESS] setting environment variables before starting R

Ross Boylan ross at biostat.ucsf.edu
Thu Mar 27 21:47:38 CET 2014

On 3/27/2014 1:22 PM, Vitalie Spinu wrote:
> Yes, process-environment is one way tot go but it will affect all the
> processes spanned by Emacs. If you want only for R then Sys.setenv from
> .Rprofile should do what you want.
>     Vitalie
I have seen some comments that Sys.setenv may be too late to affect the 
library paths R uses (I mean paths in the LD_LIBRARY_PATH sense, not the 
R sense) and it's certainly too late for PATH to affect which R gets 
run.  Do I need PATH set when I launch emacs to affect ESS's choice of R 

>   >>> Ross Boylan on Thu, 27 Mar 2014 11:49:23 -0700 wrote:
>   > I need to set LD_LIBRARY_PATH and PATH before invoking R.  How can I do that?
>   > Reading the source it looks as if process-environment might be relevant
>   > (ess-inf.el), but I'm not sure if it's just a local variable.  Also, that sounds
>   > as if it affects everything, and I really want it only for R (though since
>   > that's usually all I use it doesn't matter much).
>   > The customization variables mentioned in the documentation seem to apply to
>   > command line arguments only.
>   > I guess for now I'll just use a shell and ess-remote.
>   > Thanks.
>   > Ross Boylan
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