Le mardi 30 août 2016 19:33:20 UTC+2, leif a écrit :


> > Making R optional *will* break existing code. 
>
> How do you come to that conclusion? 
>

To be precise : any code relying on R being standard and using it without 
bothering checking this assumption.
I have such code myself (e. g. a couple of pedagogic notebooks confronting 
explicit symbolic integration + function evaluation, numerical integration 
and Monte-Carlo integration, which uses R for the latter).

>
> Making R optional just means people using R (or the interface to it) 
> would have to "manually" (=explicitly) install it then (or in the 
> future, perhaps have to configure Sage '--with-R' or something like that). 
>

(Wouldn't that be "sage -i R" ? ) Indeed. Yet another chore during Sge 
maintainance.... easily avoided with standard R binary, partially avoided 
with a standard R interface.

HTH,

--
Emmanuel Charpentier

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