cl-babel software package provides A charset encoding/decoding library, not unlike GNU libiconv, 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-babel
cl-babel is installed in your system.
Make ensure the cl-babel package were installed using the commands given below,
$ sudo dpkg-query -l | grep cl-babel *
You will get with cl-babel package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | cl-babel |
| Version | 0.3.0+20091229-1 |
| Description | A charset encoding/decoding library, not unlike GNU libiconv |
| Sub Section | Lisp |