elpa-epc software package provides RPC stack for Emacs Lisp, 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-epc
elpa-epc is installed in your system.
Make ensure the elpa-epc package were installed using the commands given below,
$ sudo dpkg-query -l | grep elpa-epc *
You will get with elpa-epc package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | elpa-epc |
| Version | 0.1.1-2 |
| Description | RPC stack for Emacs Lisp |
| Sub Section | Lisp |