rstudio/packrat — pull request #40 by krlmlr (2014-02-11 10:17:44+00:00)
Title: Install packages from GitHub via SHA1 and not via named reference

Reason: Named references can change, SHA1 cannot

It was necessary to download the .tar.gz file, because untar had weird problems with the zip file. Also, GitHub will download

Closes #39 (=includes it).