# File lib/rvm/environment/utility.rb, line 13
    def self.current_environment_id
      @current_environment_id ||= begin
        gem_home = ENV['GEM_HOME'].to_s.strip
        if !gem_home.empty? && gem_home =~ /rvm\/gems\//
          File.basename(gem_home)
        else
          matching_path = $:.select { |item| item =~ /rvm\/rubies/ }.first
          matching_path.to_s.gsub(/^.*rvm\/rubies\//, '').split('/')[0] || "system"
        end
      end
    end