eddelbuettel/littler — pull request #4 by cboettig (2014-10-07 21:11:35+00:00)
Title: Option to allow install2.r to error if package installation fails

Failing package installations only throw a warning in R. Solution treats warnings as errors. Solution based on http://stackoverflow.com/questions/26244530 to address issue reported in https://github.com/eddelbuettel/rocker/issues/24