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.
Extending Debian repos
- Existing solutions
- Section descriptions
- Possible solutions
Has the same problems as hardcoding elsewhere but better than hardcoding in lots of places.
Has a configuration file listing all suites with metadata about all of them.
All the info.
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?).
Encodes codename combinations like squeeze2bpo2wheezy in a configuration file.
Has hostgroups for each Debian release that is currently in use.
Hardcodes latest Ubuntu release, Debian suite names, compression to suite mappings, currently working mirror.
www.d.o apache2 config hard-codes codename/version mapping and arch association mapping.
- bin/gen-DSA: hard-codes mappings from oldstable/stable/testing to codenames.
- Makefile and lib/debian-releases.mk hard-code architectures
Has architectures, sections hard-coded, including non-US.
parts/7release-notes hard-codes which release notes to build and which release to use for trunk.
lessoften-parts/1installation-guide hard-codes which suites have the installation-guide
@gTags in /srv/bugs.debian.org/etc/config on bugs-master.debian.org has a list of releases and their -ignore tags.
/srv/bugs.debian.org/source/bugscan/bugcfg.pm has hardcoded list of releases and architectures (used for the britney counts)
english/releases/*/release.data has architectures, install manual languages and release notes languages.
english/template/debian/installer.wml has which suites have CD images for which arches.
english/releases/Makefile and english/Bugs/pkgreport-opts.inc have lists of releases.
english/security/oval/Makefile and english/security/oval/generate.py have lists of releases and their versions (without minor release number).
*/ports/index.wml has which architectures are official and which are not, would be better to use the data from the archive re officialness.
*/distrib/archive.wml has which releases are on archive.debian.org, would be better to automatically update that info.
Hardcodes various info about the releases. Hardcodes list of Linux architectures from dpkg.
Hardcoded release name, symbolic name references, architectures, and sorting of releases. Also information about what a partial release (like -updates and -security) does sort-of overlay.
data/RELEASES data/ftp/calculate-override-disparities data/ftp/extract-section-priority data/debcheck/debcheck
The qadb apt database hard-codes which suites are actively updated.
valid_suites, valid_arches, ignore_arches & ignore_suites in /srv/buildd.debian.org/etc/buildlogs.conf on the buildd host hard-code various aspects of the archive.
Hardcodes the names of backports suites.
Hardcodes the list of all official and unofficial architecture Debian names.
- Hardcodes Ubuntu release names.
- Hardcodes architecture list of several distribution (including Debian)
- Hardcodes architecture list of Debian testing (udd/bugs_gatherer.pl)
- releases table has hard-coded info about releases
- bts_tags table has hard-coded list of bts tags
- sql files setup.sql and upgrade.sql also contain this info of the tables listed above
- udd has a copy of the BTS config, which contains hardcoded info about release (see above for bugs.debian.org info).
- udd uses the version in /srv/udd.debian.org/udd/bugs-config, which comes from udd git
- the version from the BTS is available in /srv/bugs.debian.org/etc/config
Various packages hard-code section descriptions.
chdist hardcodes architecture lists. debchange hardcodes suite names. bts hardcodes the BTS suite/suite-ignore usertags.
Hardcodes suite to version, codename and architecture list mappings.
Hardcodes suite to codename mappings, -pu codenames, codenames that binNMUs can be done in.
Hardcodes list of architectures that have ever been on ftp.d.o.
nm-templates hardcodes recent release codenames in nm_emeritus.txt
Hardcodes the codename of Debian testing on the d-i daily builds directories like this:
The base for this is in
and there are multiple places in here which hard-code release name, architecture names etc.
tools/start_new_disc stores architecture abbreviations for long architecture names.
Hard-codes the CD image links and release versions on the front page.
The debian-security-support package lists which packages are unsupported for security fixes in various versions of Debian. It hardcodes version numbers (e.g. 7 to 9) of supported releases.
Ideally, this package wouldn't exist, and this functionality would be upstreamed in the repository itself.
Hard-codes codenames in bin/do_stats triggers/common triggers/trigger.debian
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.
(This is the case already.)
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.
Know the order of suites
packages.d.o, sources.d.n, manpages.d.o etc need to know what order to display suites in.
Know the activity status of suites
sources.d.n etc need to know if suites will ever be updated again.
Some sketches of possible solutions...
Extend deb822 sources.list format
Use an extension of the deb822 sources.list format to describe all Debian URLs, suites, components etc. Place at a canonical location for Debian, an aggregation of all the other ones, sign with a long-lived key. Place at the root of each repository (or in the indicies directory) a file called Sources that lists the sources and their relationships, sign with the current repository key.
Types: deb deb-src URIs: http://security.debian.org/debian-security/ Suites: testing/updates Components: main contrib non-free Architectures: amd64 ... Types: deb deb-src URIs: http://deb.debian.org/debian/ Suites: testing testing-proposed-updates unstable experimental Components: main contrib non-free Architectures: amd64 ... Types: deb deb-src URIs: http://deb.debian.org/debian/ Suites: experimental Components: main contrib non-free Parent: unstable Architectures: amd64 ... Types: deb deb-src URIs: http://incoming.debian.org/debian-buildd/ Suites: buildd-oldstable-proposed-updates buildd-testing-proposed-updates buildd-unstable buildd-experimental Components: main contrib non-free Architectures: amd64 ... Types: deb deb-src URIs: http://debug.mirrors.debian.org/debian-debug/ Suites: testing-debug unstable-debug experimental-debug Components: main contrib non-free Architectures: amd64 ... Types: deb deb-src URIs: http://archive.debian.org/debian/ Codenames: bo buzz hamm ... Components: main contrib non-free Architectures: amd64 ...
Aggregate and extend partial Release files
Strip hashes from the Release files and publish them at the root of each repository (or in the indicies directory) a file called Releases that lists the releases and their relationships, sign with the current repository key. Then aggregate those files in a central location, adding URI fields referencing the repositories, sign with a long-lived key. Any stanza that is missing Suite/Codename is used to provide defaults for the following stanzas that do.
Origin: Debian Label: Debian Changelogs: http://metadata.ftp-master.debian.org/changelogs/@CHANGEPATH@_changelog Acquire-By-Hash: yes Components: main contrib non-free URI: http://deb.debian.org/debian/ Mirrors: https://anonscm.debian.org/viewvc/webwml/webwml/english/mirror/Mirrors.masterlist?view=co Date: Fri, 16 Dec 2016 20:38:11 UTC Valid-Until: Fri, 23 Dec 2016 20:38:11 UTC Architectures: amd64 arm64 armel armhf hurd-i386 i386 kfreebsd-amd64 kfreebsd-i386 mips mips64el mipsel powerpc ppc64el s390x Suite: unstable Codename: sid Description: Debian x.y Unstable - Not Released Suite: testing Codename: stretch Description: Debian x.y Testing distribution - Not Released