# File lib/phusion_passenger/platform_info/ruby.rb, line 302
        def self.rvm_installation_mode
                if in_rvm?
                        if ENV['rvm_path'] =~ /\.rvm/
                                return :single
                        else
                                if GEM_HOME =~ /\.rvm/
                                        return :mixed
                                else
                                        return :multi
                                end
                        end
                else
                        return nil
                end
        end