class Bundler::Definition

def converge_sources
  # Replace the sources from the Gemfile with the sources from the Gemfile.lock,
  # if they exist in the Gemfile.lock and are `==`. If you can't find an equivalent
  # source in the Gemfile.lock, use the one from the Gemfile.
  changes = sources.replace_sources!(@locked_sources)
  sources.all_sources.each do |source|
    # has to be done separately, because we want to keep the locked checksum
    # store for a source, even when doing a full update
    if @locked_checksums && @locked_gems && locked_source = @locked_gems.sources.find {|s| s == source && !s.equal?(source) }
      source.checksum_store.merge!(locked_source.checksum_store)
    end
    # If the source is unlockable and the current command allows an unlock of
    # the source (for example, you are doing a `bundle update <foo>` of a git-pinned
    # gem), unlock it. For git sources, this means to unlock the revision, which
    # will cause the `ref` used to be the most recent for the branch (or master) if
    # an explicit `ref` is not used.
    if source.respond_to?(:unlock!) && @sources_to_unlock.include?(source.name)
      source.unlock!
      changes = true
    end
  end
  changes
end