If I understand you correctly, cpan is setting the PERL5LIB variable and thus overriding your pre-existing PERLLIB? A bug report sound better than avoiding PERLLIB because of badly behaving programs :)

In reply to Re: PERLLIB vs PERL5LIB: not quite the same by Anonymous Monk
in thread PERLLIB vs PERL5LIB: not quite the same by Tanktalus

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