xul-ext-gdata-provider 1:38.4.0+build3-0ubuntu0.15.10.1 (amd64 binary) in ubuntu wily

 Lighting is the Mozilla Calendar extension for Thunderbird, based
 on Sunbird - the Mozilla Standalone Calendar application. It is tightly
 integrated with Thunderbird, allowing it to easily perform email-related
 calendaring tasks.
 .
 This package provides Google Calendar support. It's a recommended component
 if you want to connect to your google calendar.