On Fri, Oct 20, 2017 at 11:47 PM, François Bissey <frp.bis...@gmail.com> wrote: > > > On 21/10/2017, at 10:37, Michael Orlitzky <mich...@orlitzky.com> wrote: > > On 10/20/2017 11:30 AM, Nils Bruin wrote: > > Do we actually get real benefit from packaging R with sage? It seems to > me R is a very popular, very mature piece of software. Isn't it easy to > install R on any of the platforms supported by sage? If that is the > case, wouldn't it be much easier to let sage just work with the > system-wide R if that is available? > > > > No, yes, yes. > > > > Of course we had those conversations before. sage interfaces with R in two > ways: > * directly with the R command line through the pexpect interface > * through rpy > > The first way can happily use system wide R. > The second is more complicated. We have to build sage’s rpy and rpy > links directly to libR and that’s where the potential madness comes in, > libR links to blas/lapack. So there is a potential clash between > system blas/lapack and sage blas/lapack in rpy. > This may (or not) be dealt with by being careful in building rpy in sage.
This is a problem for using some other system packages in Sage as well, so it would be good to resolve in general. I don't have a strong opinion on whether or not Sage should include a package for R, or if should be standard or optional. But I do believe that in either case it should be able to resolve an R dependency from the system R, as should be the case for almost any other dependency (which is a problem I'm still working on but progress is slow due to slow progress in getting the necessary preliminaries accepted...) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
