libkf5activitiesexperimentalst software package provides Tools and widgets for the desktop library, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libkf5activitiesexperimentalst
libkf5activitiesexperimentalst is installed in your system.
Make ensure the libkf5activitiesexperimentalst package were installed using the commands given below,
$ sudo dpkg-query -l | grep libkf5activitiesexperimentalst*
You will get with libkf5activitiesexperimentalst package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | KDE |
| Package | libkf5activitiesexperimentalst |
| Version | 4:5.5.5-0ubuntu1 |
| Description | Tools and widgets for the desktop library |
| Sub Section | KDE |