class Bundler::Definition

def pinned_spec_names(specs)
  names = []
  specs.each do |s|
    # TODO when two sources without blocks is an error, we can change
    # this check to !s.source.is_a?(Source::LocalRubygems). For now,
    # we need to ask every Rubygems for every gem name.
    if s.source.is_a?(Source::Git) || s.source.is_a?(Source::Path)
      names << s.name
    end
  end
  names.uniq!
  names
end