Your message dated Fri, 11 Oct 2024 18:16:01 +0200
with message-id <[email protected]>
and subject line Re: Bug#1084948: dpkg not respecting Breaks+Replaces
relationship
has caused the Debian Bug report #1084948,
regarding dpkg not respecting Breaks+Replaces relationship
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1084948: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1084948
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--- Begin Message ---
Package: dpkg
Version: 1.22.11
Severity: normal
Dear maintainers,
It seems like dpkg does not allow for overwriting files when using the
combination of package Replaces and Breaks that's described in Policy chapter
7.6.1
https://www.debian.org/doc/debian-policy/ch-relationships.html#s-replaces
If I read the Policy correctly, if you split off package A 1.0 into package A
2.0 and B 2.0, where B 2.0 contains some files that was previously in A 1.0,
you can then declare the relationships in a way that you can install B 2.0 on
top of A 1.0 and have dpkg replace the overlapping files and make B 2.0 the
owner of them.
However, in my testing this does not happen. Rather, dpkg will throw an error
as such.
==========
$ apt install netatalk
$ dpkg -i netatalk-tools_4.0.0~ds-4_arm64.deb
dpkg: regarding .../netatalk-tools_4.0.0~ds-4_arm64.deb containing
netatalk-tools:
netatalk-tools breaks netatalk (<< 4.0.0~ds-1)
netatalk (version 3.2.10~ds-1) is present and installed.
dpkg: error processing archive ../netatalk-tools_4.0.0~ds-4_arm64.deb
(--install):
installing netatalk-tools would break netatalk, and
deconfiguration is not permitted (--auto-deconfigure might help)
Errors were encountered while processing:
../netatalk-tools_4.0.0~ds-4_arm64.deb
==========
This commit represents the particular test case that I was using:
https://salsa.debian.org/netatalk-team/netatalk/-/commit/50d0f4b5522a366ce186d567dfa516b71c09d600
Am I missing something obvious here, or is there a discrepancy between what the
Policy says and how dpkg behaves presently?
Your insights would be hugely appreciated!
Sincerely,
Daniel
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--- End Message ---
--- Begin Message ---
On Fri, Oct 11, 2024 at 03:45:40PM +0000, Daniel Markstedt wrote:
> However, in my testing this does not happen. Rather, dpkg will throw an error
> as such.
>
> ==========
> $ apt install netatalk
> $ dpkg -i netatalk-tools_4.0.0~ds-4_arm64.deb
>
> dpkg: regarding .../netatalk-tools_4.0.0~ds-4_arm64.deb containing
> netatalk-tools:
> netatalk-tools breaks netatalk (<< 4.0.0~ds-1)
> netatalk (version 3.2.10~ds-1) is present and installed.
>
> dpkg: error processing archive ../netatalk-tools_4.0.0~ds-4_arm64.deb
> (--install):
> installing netatalk-tools would break netatalk, and
> deconfiguration is not permitted (--auto-deconfigure might help)
> Errors were encountered while processing:
> ../netatalk-tools_4.0.0~ds-4_arm64.deb
> ==========
You are asking dpkg to install netatalk-tools which declares Breaks
against the installed netatalk without allowing it to deconfigure
netatalk. As a result, dpkg errors out. If you really want to allow dpkg
to proceed, you should either remove or upgrade netatalk before
unpacking netatalk-tools or you should allow dpkg to deconfigure the
installed netatalk by passing --auto-deconfigure.
I think this resolves your question and am thus closing the bug. If it
does not, please reopen.
Helmut
--- End Message ---
