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Extending Debian repos

We want (761348) to enable:

  • Automatic enumeration of suites for a repository
  • Automatic enumeration of repositories for a distro

This page is for exploring the existing solutions, existing hardcoding and requirements for services.

Existing solutions

distro-info

Has the same problems as hardcoding elsewhere but better than hardcoding in lots of places.

Ubuntu

http://changelogs.ubuntu.com/meta-release

Tanglu

https://lists.debian.org/CAKNHny8OUnOveJxOmDNhQHcoFJG4PbKgCh4ZBYwuj5QyvF-eFQ@mail.gmail.com

reprepro

Has a configuration file listing all suites with metadata about all of them.

Existing hardcoding

sources.debian.net

Name of all suites in the archive, with explicit mappings from "symbolic" names (stable, testing, ...) to "absolute" names (wheezy, jessie, ...). Bonus point: metadata about both current and past releases (on archive.d.o), such as when the releases happened, their version numbers, etc.

Ideally, the above info should be available for all archives, and in particular also for the security archive. Bonus point: having a single central place that gather together information from all relevant archives (the main one, security, what else?).

piuparts.debian.org

Encodes codename combinations like squeeze2bpo2wheezy in a configuration file.

dsa-nagios

Has hostgroups for each Debian release that is currently in use.

dsa-puppet

www.d.o apache2 config hard-codes codename/version mapping and arch association mapping.

secure-testing

  • bin/gen-DSA: hard-codes mappings from oldstable/stable/testing to codenames.

debwww/cron

Has architectures, sections hard-coded, including non-US.

webwml

english/releases/*/release.data has architectures, install manual languages and release notes languages.

webwml/english/releases/Makefile has list of releases.

tracker.debian.org

Hardcodes various info about the releases.

Requirements

piuparts.debian.org

Want squeeze2bpo2wheezy to not be magically deleted just because jessie became stable. When new stable releases are done, new piuparts suites (like wheezy2bpo2jessie) should be created, not old ones reused.

Single source of data

For some purposes it would be interesting to have a single source of all metadata (on a per-repo basis and also on a global distro-wide basis) so that full apt metadata doesn't need to be downloaded if it isn't needed. This could also be easier to parse in some cases.

Know which suites are partial

Knowing what suites are "partial" (i.e. don't have a full set of packages) and what parent suite they are associated with (to get the remaining packages) is important for example to be able to do proper dependency analysis on a partial suite by trying to look up missing packages in the parent suite.