elpa-elfeed software package provides Emacs Atom/RSS feed reader, 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-elfeed
elpa-elfeed is installed in your system.
Make ensure the elpa-elfeed package were installed using the commands given below,
$ sudo dpkg-query -l | grep elpa-elfeed *
You will get with elpa-elfeed package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Lisp |
| Package | elpa-elfeed |
| Version | 2.0.1-1 |
| Description | Emacs Atom/RSS feed reader |
| Sub Section | Lisp |