📝 Update install-from-source for debian trixie

[christophfroehlich]

Issue Type

• 🐛 Bug / Problem
• ✏️ Typo / Grammar
• 📖 Outdated Content
• 🚀 Enhancement

Generated by Generative AI

no

Distribution

Rolling+Lyrical

Description

The install-from-source page lists debian as Tier 3 platform, but is later not specific about differences from Ubuntu to debian: software-properties-common is not available on Trixie anymore, and so it is not possible to add the Universe repository with the given commands.

1. Why do we need to install Universe on Ubuntu at all, or can it be removed from the instructions?
2. If there is a reason to install it on Ubuntu, should we add a note that this is Ubuntu-only?
3. Or is there a reason for something similar on debian, maybe using extrepo?

Affected Pages/Sections

https://github.com/ros2/ros2_documentation/blob/rolling/source/Installation/_Apt-Repositories.rst

Screenshots or Examples (if applicable)

No response

Suggested Fix

No response

Additional Context

No response

[SomeshG1151]

Hi! I'd like to work on this. I think the simplest fix is to add a note clarifying that the software-properties-common / add-apt-repository universe step is Ubuntu-only, since Debian Trixie no longer ships software-properties-common. Does this approach sound right to maintainers ?