Re: deb822 sources by default for bookworm
On Wed, Nov 3, 2021 at 11:45 PM Julian Andres Klode <jak@debian.org> wrote:
>
> Hi all,
>
> I'd like us to move from
>
> /etc/apt/sources.list
>
> to
> /etc/apt/sources.list.d/debian.sources
>
While it's really a nice feature for the third-party repository, I
don't see the benefits to change the default one, especially the path.
I had to admit that I have countless scripts which run `sed
/etc/apt/souces.list`, to change the default mirror, as well as in the
Dockerfile.
> in bookworm.
>
> # deb822 intro
>
> The deb822 format can be shorter and easier to read, to quote the
> sources.list manual page:
>
> As an example, the sources for your distribution could look like this in one-line-style format:
>
> deb http://deb.debian.org/debian bullseye main contrib non-free
> deb http://security.debian.org bullseye-security main contrib non-free
>
> or like this in deb822 style format:
>
> Types: deb
> URIs: http://deb.debian.org/debian
> Suites: bullseye
> Components: main contrib non-free
>
> Types: deb
> URIs: http://security.debian.org
> Suites: bullseye-security
> Components: main contrib non-free
>
>
> Now if you mix unstable and testing, you could just have that it one
> paragraph.
>
> The big advantage of deb822 sources is that you can embed larger data:
>
> Types: deb
> URIs: https://deb.debian.org
> Suites: stable
> Components: main contrib non-free
> Signed-By:
> -----BEGIN PGP PUBLIC KEY BLOCK-----
> .
> mDMEYCQjIxYJKwYBBAHaRw8BAQdAD/P5Nvvnvk66SxBBHDbhRml9ORg1WV5CvzKY
> CuMfoIS0BmFiY2RlZoiQBBMWCgA4FiEErCIG1VhKWMWo2yfAREZd5NfO31cFAmAk
> IyMCGyMFCwkIBwMFFQoJCAsFFgIDAQACHgECF4AACgkQREZd5NfO31fbOwD6ArzS
> dM0Dkd5h2Ujy1b6KcAaVW9FOa5UNfJ9FFBtjLQEBAJ7UyWD3dZzhvlaAwunsk7DG
> 3bHcln8DMpIJVXht78sL
> =IE0r
> -----END PGP PUBLIC KEY BLOCK-----
>
> Oh yeah, a standalone sources file with embedded key - making third-party
> repository management substantially more convenient.
>
> # issues
>
> several software does not support deb822 currently. I plan to work on
> adding deb822 support to python-apt in the upcoming months, I don't know
> what else is affected.
>
> There is some software "parsing" sources.list on its own, most of that
> is better served by `apt-get indextargets` (and for downloading stuff
> based on the urls, `apt-helper download-file`, such that it respects
> proxies and supports all transports users may use in sources.list)
>
> In terms of setting up system, I guess debootstrap and d-i's apt-setup
> module need changes? I admit I do not have a total overview.
>
> # timeline
>
> I do not know the total outcome of this. My hope would be that
> we can switch the default in Summer 2022 and see what breaks,
> although I don't know who's going to install from testing
> d-i :D
>
> docker images probably can move earlier as they don't have
> as much interactive users that use tools that might be broken
> (e.g. software-properties). Possibly others, there's no need
> to roll out in multiple places at the same time, as long as
> we converge by freeze time.
>
> I invite people to test this out already on their own systems,
> I know several people do; and extrepo also builds deb822 sources
> files, but several people I guess do not know about it yet. Please
> test and report bugs.
> --
> debian developer - deb.li/jak | jak-linux.org - free software dev
> ubuntu core developer i speak de, en
>
--
Shengjing Zhu
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