requires 'perl',         '5.008008';
requires 'Scalar::Util', '1.25';
on test => sub {
    test_requires 'Test::More',      '0.98';
    test_requires 'Test::Exception', '0.32';
};
on configure => sub {
    requires 'Module::Build', '0.38';
};
on build => sub {
    requires 'Module::Build', '0.38';
};