# File lib/rubygems/require_paths_builder.rb, line 4
 4:   def write_require_paths_file_if_needed(spec = @spec, gem_home = @gem_home)
 5:     return if spec.require_paths == ["lib"] &&
 6:               (spec.bindir.nil? || spec.bindir == "bin")
 7:     file_name = File.join(gem_home, 'gems', "#{@spec.full_name}", ".require_paths")
 8:     file_name.untaint
 9:     File.open(file_name, "w") do |file|
10:       spec.require_paths.each do |path|
11:         file.puts path
12:       end
13:       file.puts spec.bindir if spec.bindir
14:     end
15:   end