class Bundler::SourceList

def replace_sources!(replacement_sources)
  return true if replacement_sources.empty?
  [path_sources, git_sources].each do |source_list|
    source_list.map! do |source|
      replacement_sources.find {|s| s == source } || source
    end
  end
  replacement_rubygems =
    replacement_sources.detect {|s| s.is_a?(Source::Rubygems) }
  @rubygems_aggregate = replacement_rubygems if replacement_rubygems
  # Return true if there were changes
  lock_sources.to_set != replacement_sources.to_set ||
    rubygems_remotes.to_set != replacement_rubygems.remotes.to_set
end