Simple script to resolve dependencies in a Gemfile without installing them

bundle_resolver.rb

require 'bundler'

unless ARGV.size == 1
  puts "Usage: bundle_resolver.rb [/path/to/gemfile]"
  exit 1
end

defn = Bundler::Definition.build(ARGV[0], nil, nil)
defn.resolve_remotely!

defn.specs.each do |spec|
  puts "#{spec.name} #{spec.version}"
end