libtevent-dev - 2:0.16.1+samba4.21.3+dfsg-6+b1 main

tevent is a simple library that can handle the main event loop for an
application. It supports three kinds of events: timed events, file
descriptors becoming readable or writable and signals.
.
Talloc is used for memory management, both internally and for private
data provided by users of the library.
.
This package provides the development files.