cscope-el software package provides transitional dummy package, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cscope-el
cscope-el is installed in your system.
Make ensure the cscope-el package were installed using the commands given below,
$ sudo dpkg-query -l | grep cscope-el *
You will get with cscope-el package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | cscope-el |
| Version | 15.8b-2 |
| Description | transitional dummy package |
| Sub Section | devel |