cvsdelta software package provides Summarize differences in a CVS repository, 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 cvsdelta
cvsdelta is installed in your system.
Make ensure the cvsdelta package were installed using the commands given below,
$ sudo dpkg-query -l | grep cvsdelta *
You will get with cvsdelta package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Version Control Systems |
| Package | cvsdelta |
| Version | 1.7.0-6 |
| Description | Summarize differences in a CVS repository |
| Sub Section | vcs |