'''1.''' Download the [[Signing Key|Signing Key]].

{{CodeSelect|code=
wget https://www.{{project_clearnet}}/derivative.asc
}}

'''2.''' ''Optional:'' [[Signing Key|Check the Signing Key]] for better security.

'''3.''' Add {{project_name_short}} signing key.

{{CodeSelect|code=
sudo cp derivative.asc /usr/share/keyrings/derivative.asc
}}

'''4.''' {{project_name_short}} APT repository choices.

''Optional:'' See [[Packages for Debian Hosts|{{project_name_short}} Packages for Debian Hosts and {{project_name_short}} Host Enhancements]] instead of the next step for more secure and complex options.

'''5.''' Add {{project_name_short}} APT repository.

{{CodeSelect|code=
echo "Types: deb
URIs: https://deb.{{project_clearnet}}
Suites: {{Stable project version based on Debian testing codename}}
Components: main contrib non-free
Enabled: yes
Signed-By: /usr/share/keyrings/derivative.asc" {{!}} sudo tee /etc/apt/sources.list.d/derivative.sources
}}