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on configure => sub {
    requires 'ExtUtils::MakeMaker::CPANfile';
    requires 'ExtUtils::PkgConfig';
};

requires 'X::Tiny' => '0.22';

on test => sub {
    requires 'Test::More';
    requires 'Test::FailWarnings';
    requires 'Test::Deep';
    requires 'Test::Fatal';
};