cl-hyperobject software package provides Common Lisp library for hyperobjects, 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 cl-hyperobject
cl-hyperobject is installed in your system.
Make ensure the cl-hyperobject package were installed using the commands given below,
$ sudo dpkg-query -l | grep cl-hyperobject *
You will get with cl-hyperobject package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | cl-hyperobject |
| Version | 2.12.0-1 |
| Description | Common Lisp library for hyperobjects |
| Sub Section | Lisp |