camlp5-885x9 software package provides virtual package provided by camlp5, 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 camlp5-885x9
camlp5-885x9 is installed in your system.
Make ensure the camlp5-885x9 package were installed using the commands given below,
$ sudo dpkg-query -l | grep camlp5-885x9*
You will get with camlp5-885x9 package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Virtual packages |
| Package | camlp5-885x9 |
| Version | |
| Description | virtual package provided by camlp5 |
| Sub Section | Virtual |