I had some friendly emails with Stefan (git2r upstream) when he started the R package git2r (as I needed some features in my drat R package) and he expressed quite some frustration at working with libgit2 as it changed so much upstream.
I know we collectively really hate embedding copies, but r-cran-git2r may be defensible case because libgot2 is too complex / volatile. Just my $0.02. Dirk -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
