> Reuse was overshadowed by incompatible versions, or API changes between versions that became the stuff of legends. The Perl community has spent a couple deca

> Reuse was overshadowed by incompatible versions, or API changes between versions that became the stuff of legends. The Perl community has spent a couple decades "enjoying" taking (or being forced to take) a long hard look at that. One result in P6 is :auth (authority), :api (api version) and :ver (package version) qualifiers, eg: use Some::Module:ver<1.2>:api<3.4>; with corresponding support throughout the language and packaging tools. Aiui this aspect of the language and tooling needs work but shows promise.