liblancelot-dev 4:4.3.80-0ubuntu6 (amd64 binary) in ubuntu lucid

 Liblancelot is a base framework for everything in the world of Lancelot.
 It is built on top of Plasma. It provides a set of custom widgets, layouts
 and has a few more advanced concepts for allowing for quicker development
 of Plasma-based applications.
 .
 Lancelot is an application launcher menu (or ALI) for KDE 4 designed to
 provide a place from which all your jobs begin. It provides quick access
 to applications, places, documents, contacts and system information.
 .
 This package contains the development headers that are needed to compile
 plasma widgets that use the lancelot library. It is part of the KDE 4
 plasma addons module.