libtelepathy-glib-dev 0.24.1-2 (amd64 binary) in ubuntu bionic

 This package contains development files for telepathy-glib, a GLib-based
 library for Telepathy components.
 .
 Vala bindings are also included; the Vala bindings are currently considered
 to be experimental by the maintainers of telepathy-glib, and might receive
 incompatible changes until at least telepathy-glib 0.14.0.
 .
 Telepathy is a D-Bus framework for unifying real time communication,
 including instant messaging, voice calls and video calls. It abstracts
 differences between protocols to provide a unified interface for
 applications.