class Bundler::Installer

def load_plugins
  Bundler.rubygems.load_plugins
  requested_path_gems = @definition.requested_specs.select {|s| s.source.is_a?(Source::Path) }
  path_plugin_files = requested_path_gems.map do |spec|
    Bundler.rubygems.spec_matches_for_glob(spec, "rubygems_plugin#{Bundler.rubygems.suffix_pattern}")
  rescue TypeError
    error_message = "#{spec.name} #{spec.version} has an invalid gemspec"
    raise Gem::InvalidSpecificationException, error_message
  end.flatten
  Bundler.rubygems.load_plugin_files(path_plugin_files)
  Bundler.rubygems.load_env_plugins
end