cl-mcclim software package provides Common Lisp graphic user interface toolkit, 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-mcclim
cl-mcclim is installed in your system.
Make ensure the cl-mcclim package were installed using the commands given below,
$ sudo dpkg-query -l | grep cl-mcclim *
You will get with cl-mcclim package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | cl-mcclim |
| Version | 0.9.6.dfsg.cvs20100315-2 |
| Description | Common Lisp graphic user interface toolkit |
| Sub Section | Lisp |