Squirrel is actually deprecated in favor of Any::Moose. They basically do the same thing except Any::Moose decides to use Mouse or Moose once, where as Squirrel

Squirrel is actually deprecated in favor of Any::Moose. They basically do the same thing except Any::Moose decides to use Mouse or Moose once, where as Squirrel will attempt to do it every time it's imported.