use ExtUtils::MakeMaker;
package MY;
sub test_via_harness {
  my($self, $perl, $tests) = @_;
  local $_ = $self->SUPER::test_via_harness($perl, $tests);
  s/PERL_DL_NONLAZY=1//g;
  return $_;
}

sub test_via_script {
  my($self, $perl, $tests) = @_;
  local $_ = $self->SUPER::test_via_script($perl, $tests);
  s/PERL_DL_NONLAZY=1//g;
  return $_;
}

package main;
# rest of your Makefile.PL