Gem::BasicSpecification#full_require_paths

# File tmp/rubies/ruby-3.1.3/lib/rubygems/basic_specification.rb, line 145
def full_require_paths
  @full_require_paths ||=
  begin
    full_paths = raw_require_paths.map do |path|
      File.join full_gem_path, path.tap(&Gem::UNTAINT)
    end

    full_paths << extension_dir if have_extensions?

    full_paths
  end
end