Package: dpkg
Version: 1.20.9
Severity: bug

In Debian Bullseye dpkg-deb returns nothing when asked for some 'source:*' field, even if .deb file provides the package that is already installed.

At the same time, dpkg-query output is OK.

Logs from Debian Bullseye chroot:

```
(chr-bullseye-amd64)ubely:~$ sudo dpkg -l | grep "ca-certificates"
ii ca-certificates 20210119 all Common CA certificates (chr-bullseye-amd64)ubely:~$ dpkg-deb --show --showformat '${Package}' /var/ cache/apt/archives/ca-certificates_20210119_all.deb; echo
ca-certificates
(chr-bullseye-amd64)ubely:~$ dpkg-deb --show --showformat '${source:Package}' /var/cache/apt/archives/ca-certificates_20210119_all.deb; echo

(chr-bullseye-amd64)ubely:~$ dpkg-query --show --showformat='$ {source:Package}' ca-certificates; echo
ca-certificates
(chr-bullseye-amd64)ubely:~$ dpkg-deb --version
Debian 'dpkg-deb' package archive backend version 1.20.9 (amd64).
```

Under Debign Buster everything is OK:

```
(chr-buster-amd64)ubely:~$ sudo dpkg -l | grep "ca-certificates"
ii ca-certificates 20200601~deb10u2 all Common CA certificates (chr-buster-amd64)ubely:~$ dpkg-deb --show --showformat '${Package}' /var/ cache/apt/archives/ca-certificates_20200601~deb10u2_all.deb; echoca- certificates
(chr-buster-amd64)ubely:~$ dpkg-deb --show --showformat '${source:Package}' / var/cache/apt/archives/ca-certificates_20200601~deb10u2_all.deb; echo ca-certificates
(chr-buster-amd64)ubely:~$ dpkg-query --show --showformat='${source:Package}' ca-certificates; echo
ca-certificates
(chr-buster-amd64)ubely:~$ dpkg-deb --version
Debian 'dpkg-deb' package archive backend version 1.19.7 (amd64).
```

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

Hi!

Thanks for the report!

On Tue, 2022-01-25 at 10:17:31 +0300, Uladzimir Bely wrote:

Package: dpkg
Version: 1.20.9
Severity: bug

Bug reports should be directed to submit@bugs.debian.org, or you could
use reportbug which should manage all this for you.

(I'll probably file a report out of this later today.)

In Debian Bullseye dpkg-deb returns nothing when asked for some 'source:*' field, even if .deb file provides the package that is already installed.

At the same time, dpkg-query output is OK.

It looks like this is a regression from the fix for #972580. I'll fix
this a queue it for the next unstable and stable versions.

Thanks,
Guillem

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

In the email from вторник, 25 января 2022 г. 13:40:58 +03 user Guillem Jover
wrote:

Hi!

Thanks for the report!

On Tue, 2022-01-25 at 10:17:31 +0300, Uladzimir Bely wrote:

Package: dpkg
Version: 1.20.9
Severity: bug

Bug reports should be directed to submit@bugs.debian.org, or you could
use reportbug which should manage all this for you.

(I'll probably file a report out of this later today.)

If you could deal with it quickly, please make the report. I've never used `reportbug` tool before, so it can take me some time to figure out how to do it in proper way.

In Debian Bullseye dpkg-deb returns nothing when asked for some 'source:*' field, even if .deb file provides the package that is already installed.

At the same time, dpkg-query output is OK.

It looks like this is a regression from the fix for #972580. I'll fix
this a queue it for the next unstable and stable versions.

Thanks,
Guillem

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