0install software package provides cross-distribution packaging system, 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 0install
0install is installed in your system.
Make ensure the 0install package were installed using the commands given below,
$ sudo dpkg-query -l | grep 0install *
You will get with 0install package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Administration Utilities |
| Package | 0install |
| Version | 2.7-3 |
| Description | cross-distribution packaging system |
| Sub Section | admin |