elpa-simple-httpd software package provides pure elisp HTTP server, 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 elpa-simple-httpd
elpa-simple-httpd is installed in your system.
Make ensure the elpa-simple-httpd package were installed using the commands given below,
$ sudo dpkg-query -l | grep elpa-simple-httpd *
You will get with elpa-simple-httpd package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | elpa-simple-httpd |
| Version | 1.4.6-2 |
| Description | pure elisp HTTP server |
| Sub Section | Lisp |