code: def _select_md5sum_arch(self, md5sum, md5sum64):
          
          if md5sum and md5sum64:
              if self.meta.arch == "x86_64":
                  return md5sum64
              else:
                  return md5sum
          if md5sum:
              return md5sum
          else:
              return md5sum64
docs: Return checksums by arch