libmoosex-params-validate-perl 0.14-1 (amd64 binary) in ubuntu maverick

 MooseX::Params::Validate fills a gap in Moose by adding method parameter
 validation to Moose, providing a simple way to verify that incoming parameters
 are of the appropriate Moose types and roles. This module is just one of many
 developing options to do this sort of thing; it should not yet be considered
 the "official" way to validate parameters.