Just a quick follow-up to say that I finally had some time to go over this again (twice, in fact) and to also include BioC and 'other' packages.
A full write-up in the (GitHub) sources of package RcppAPT and also available as a rendered vignette at http://eddelbuettel.github.io/rcppapt/binnmuAfterR340.html I have used the information therein to file the required binnmu request as bug report #868558. Cheers, Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org