class Bundler::Source::Git::GitNotAllowedError

def initialize(command)
  msg =  "Bundler is trying to run a `git #{command}` at runtime. You probably need to run `bundle install`. However, "
  msg << "this error message could probably be more useful. Please submit a ticket at http://github.com/bundler/bundler/issues "
  msg << "with steps to reproduce as well as the following\n\nCALLER: #{caller.join("\n")}"
  super msg
end