Hello, I would

like to get only the debian directory of a package, in order to build locally a set of packages.

My tools are for now, the dht programm from pkg-haskell-tools.

This tool expect a flat directory organized like this p/<package>/debian

It then create the dsc file from this and build all the .deb files, taking care of the dependency in order to build everythings via sbuild.
I like the simplicity of this and the fact that it is really easy to deploy, especially since sbuild use unshare.

It works very whell for the build part.

Now, I `just` need to maintain this flat package organisation.

So I started by providing to our users a file 'package' which describe the set of package expected., like this


# version package
testing ufo-core
unstable ufo-filters
git pyfai http://salsa.debian.org/science-team/pyfai <subfolder>
...

In the futur I would like to add also other sources for packages like pip or something else.

Then I just need to write something which can parse this file and put the right p/<package>/debian files depending of the user information.
So to start with, I just want to get the debian directory of the testing/unstable version of package.

How can I get this without downloading a full debian source package ?

thanks for your help

Frederic.

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On 2025-06-18 PICCA Frederic-Emmanuel <frederic-emmanuel.picca@synchrotron-soleil.fr> wrote:
[...]

So to start with, I just want to get the debian directory of the testing/unstable version of package.

How can I get this without downloading a full debian source package ?

Ther is no easy way for native packages (i.e. where the source package
only consists of tarball and .dsc). For modern non-native 3.0 you can
simply unpack the debian.tar.xz, for older packages you'd need to
extract the files from diff.gz.

cu Andreas

--
`What a good friend you are to him, Dr. Maturin. His other friends are
so grateful to you.'
`I sew his ears on from time to time, sure'

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On Wed, Jun 18, 2025 at 11:30:05AM +0200, Andreas Metzler wrote:

So to start with, I just want to get the debian directory of the
testing/unstable version of package.

How can I get this without downloading a full debian source package ?

Ther is no easy way for native packages (i.e. where the source package
only consists of tarball and .dsc). For modern non-native 3.0 you can
simply unpack the debian.tar.xz, for older packages you'd need to
extract the files from diff.gz.

... and hope that they don't patch the upstream source directly.

--
WBR, wRAR

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... and hope that they don't patch the upstream source directly.

The purpose is not necessarely to build every packages already uploaded into Debian :).

Just a few packages from testing/unstable in order to build backports on the current stable or exceptionally oldstable.

Maybe a solution would be to use snapshot in order to retrive the source packages.

Do we have a cli-tool whcih is an equivalent of apt source blabla=version, but connected by default to snapshot ?

Fred

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On Wed, Jun 18, 2025 at 11:59:11AM +0200, PICCA Frederic-Emmanuel wrote:

Do we have a cli-tool whcih is an equivalent of apt source blabla=version, but connected by default to snapshot ?

There's debsnap(1) in devscripts.

--
Colin Watson (he/him) [cjwatson@debian.org]

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Wed, Jun 18, 2025 at 11:59:11AM +0200, PICCA Frederic-Emmanuel wrote:

... and hope that they don't patch the upstream source directly.

The purpose is not necessarely to build every packages already uploaded into Debian :).

Just a few packages from testing/unstable in order to build backports on the current stable or exceptionally oldstable.

Maybe a solution would be to use snapshot in order to retrive the source packages.

Do we have a cli-tool whcih is an equivalent of apt source blabla=version, but connected by default to snapshot ?

debsnap

--
WBR, wRAR

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debsnap

Indeed,

it is quite slow compare to apt source...

thanks

Fred

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On Wed, Jun 18, 2025 at 12:51:28PM +0200, PICCA Frederic-Emmanuel wrote:

debsnap

Indeed,

it is quite slow compare to apt source...

Not to me.
Make sure you are using it correctly, e.g. make sure you are specifying
the version to download.

--
WBR, wRAR

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