request_path

# File lib/rubygems/resolver/conflict.rb, line 124
  def request_path current
    path = []

    while current do
      case current
      when Gem::Resolver::ActivationRequest then
        path <<
          "#{current.request.dependency}, #{current.spec.version} activated"

        current = current.parent
      when Gem::Resolver::DependencyRequest then
        path << "#{current.dependency}"

        current = current.requester
      else
        raise Gem::Exception, "[BUG] unknown request class #{current.class}"
      end
    end

    path = ['user request (gem command or Gemfile)'] if path.empty?

    path
  end