libkidletime4 software package provides library to provide information about idle time, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libkidletime4
libkidletime4 is installed in your system.
Make ensure the libkidletime4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libkidletime4 *
You will get with libkidletime4 package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Libraries |
| Package | libkidletime4 |
| Version | 4:4.14.2-5+deb8u1 |
| Description | library to provide information about idle time |
| Sub Section | libs |