MooseX::App::WritingPlugins - Writing plugins for MooseX::App


 package MooseX::App::Plugin::MyPlugin;
 use Moose::Role;
 sub plugin_metaroles {
     my ($self,$class) = @_;
     return {
         class   => ['MooseX::App::Plugin::MyPlugin::Meta::Class'],
 around 'initialize_command_class' => sub {


Plugins are implemented as Moose roles and must reside in the MooseX::App::Plugin::* namespace. Metaclasses can be altered via the 'plugin_metaroles' callback method. Furthermore Moose method modifiers (around, after, before) can be used to alter the behaviour of MooseX::App or its meta classes.



Optional callback method that should return a hash reference specifying which metaroles will be applied to the class metaclass and its contained metaclasses and helper classes.

Each key should in turn point to an array reference of role names.

It accepts the following keys:

  • class

  • attribute

  • method

  • wrapped_method

  • instance

  • constructor

  • destructor

  • error


Most of MooseX-App behaviour is implemented in metaclass roles. When writing plugins you will most likely need to alter/augument the behaviour of these roles. Implementation details can be found in the respective packages.