Moose minus the antlers
Moose is a postmodern object system for Perl5. Moose is wonderful. Unfortunately, Moose has a compile-time penalty. Though significant progress has been made over the years, the compile time penalty is a non-starter for some very specific applications. If you are writing a command-line application or CGI script where startup time is essential, you may not be able to use Moose (we recommend that you instead use persistent Perl executing environments like FastCGI for the latter, if possible). Mouse is a Moose compatible object system, which aims to alleviate this penalty by providing a subset of Moose's functionality. We're also going as light on dependencies as possible. Mouse currently has no dependencies except for building/testing modules. Mouse also works without XS, although it has an XS backend to make it much faster.
pkg install p5-Mouse