gistfile1.txt

[ 385 OK kyle@nebula:~/src/copious/vagrant-berkshelf ]
[ git:master ]
$ bundle install
Your Gemfile lists the gem vagrant-berkshelf (>= 0) more than once.
You should probably keep only one of them.
While it's not a problem now, it could cause errors if you change the version of just one of them later.
Updating git://github.com/mitchellh/vagrant.git
Fetching gem metadata from https://rubygems.org/........
Fetching additional metadata from https://rubygems.org/..
Resolving dependencies...
Bundler could not find compatible versions for gem "bundler":
  In Gemfile:
    vagrant (>= 0) ruby depends on
      bundler (~> 1.5.2) ruby

  Current Bundler version:
    bundler (1.6.3)

This Gemfile requires a different version of Bundler.
Perhaps you need to update Bundler by running `gem install bundler`?