Don't use base? This does not complain: 

package TestIt;

use Test::Deep;
use Test::Class;
BEGIN { @TestIt::ISA = ( 'Test::Class' ) }
#use base 'Test::Class';

sub startup : Tests(startup) {
}

[download]

In reply to Re: Why Does Test::Deep Kill Test::Class by kyle
in thread Why Does Test::Deep Kill Test::Class by Ovid

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