<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def continue_to_install(self):
 """Continue to install ? """

        if (self.count_uni > 0 or self.count_upg > 0 or
                "--download-only" in self.flag or "--rebuild" in self.flag):
            if self.master_packages and self.msg.answer() in ["y", "Y"]:
                installs, upgraded = self.build_install()
                if "--download-only" in self.flag:
                    raise SystemExit()
                self.msg.reference(installs, upgraded)
                write_deps(self.deps_dict)
                delete(self.build_folder)