On Apr 17, 2014, at 9:52 PM, Gábor Csárdi <csardi.ga...@gmail.com> wrote:
> On Thu, Apr 17, 2014 at 9:43 PM, Simon Urbanek <simon.urba...@r-project.org> > wrote: > [...] > The Suggests failure has nothing to do with BioC. Only packages listed in > Depends/Imports are required for a package to work so there is no guarantee > for any packages in Suggests to be available - hence the package should not > break if they are not available - that's the whole point of Suggests. If you > list it in Depends/Imports then it won't even get to the check if those > packages are not available - it won't build at all. I didn't look at the > dependencies in this particular case, but one reason to use Suggests is to > break dependency loops: if A depends on B and B on A, then there is no way to > install them, so typically A suggests B and B depends on A so that A can be > installed and checked first without B and then B checked with A and finally A > with B. > > I would naively think that if you install A and B _together_, then they > should be fine. At least this is how dependencies work on various Linux > distributions, AFAIK. They cannot be installed together, R doesn't have a concept of "together" since it doesn't separate copying and parse/eval stages so you cannot "pre-install" the packages and then run them through R to create the binary. Therefore dependencies are always sequential. > If A breaks without B then it makes such bootstrapping impossible - we found > some packages with this issue, that's why mentioned this - I don't know if > that's the case with igraph or not. > > As for BioC, the builds for BioC are independent of CRAN, so CRAN doesn't > build BioC packages and thus their availability is subject to manual > intervention - on the OS X build machine there is currently no automated way > to track BioC packages, but we're working on it. > > So this effectively means that if I Import/Depend/Suggest etc. a BioC package > in igraph, then igraph will likely not be available for OSX. Right? > No. Cheers, Simon ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
