gnustep software package provides User applications for the GNUstep Environment, 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 gnustep
gnustep is installed in your system.
Make ensure the gnustep package were installed using the commands given below,
$ sudo dpkg-query -l | grep gnustep *
You will get with gnustep package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | GNUstep |
| Package | gnustep |
| Version | 7.8 |
| Description | User applications for the GNUstep Environment |
| Sub Section | GNUstep |