Bug#977891: opencascade: library package names do not follow SOVERSION

[Carsten Schoenert]

Hello,

the latest information about the piuparts run with version 7.5.0+dfsg1-3
says this issue isn't any longer existing. The issue was already
addressed in the -2 upload so far I can see.

https://piuparts.debian.org/sid/source/o/opencascade.html

Simplay forgotten to close the report by the -2 upload?

Regards
Carsten


Am Tue, Dec 22, 2020 at 02:25:31PM +0100 schrieb Andreas Beckmann:
> Source: opencascade
> Version: 7.5.0+dfsg1-1
> Severity: serious
> User: debian-qa at lists.debian.org
> Usertags: piuparts
> 
> Hi,
> 
> during a test with piuparts I noticed your package fails to upgrade from
> 'stable'.
> It installed fine in 'stable', then the upgrade to 'sid' fails
> because it tries to overwrite other packages files without declaring a
> Breaks+Replaces relation.
> 
> See policy 7.6 at
> https://www.debian.org/doc/debian-policy/ch-relationships.html#overwriting-files-and-replacing-packages-replaces
> 
> This test intentionally skipped 'testing' to find file overwrite
> problems before packages migrate from 'unstable' to 'testing'.
> 
> From the attached log (scroll to the bottom...):
> 
>   Preparing to unpack .../0-libocct-foundation-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-foundation-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/0-libocct-foundation-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKMath.so.7', which is also in package libocct-foundation-7.3:amd64 7.3.0+dfsg1-5
>   Preparing to unpack .../1-libocct-modeling-data-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-modeling-data-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/1-libocct-modeling-data-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKBRep.so.7', which is also in package libocct-modeling-data-7.3:amd64 7.3.0+dfsg1-5
>   Preparing to unpack .../2-libocct-modeling-algorithms-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-modeling-algorithms-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/2-libocct-modeling-algorithms-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKBO.so.7', which is also in package libocct-modeling-algorithms-7.3:amd64 7.3.0+dfsg1-5
>   Preparing to unpack .../3-libocct-visualization-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-visualization-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/3-libocct-visualization-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKMeshVS.so.7', which is also in package libocct-visualization-7.3:amd64 7.3.0+dfsg1-5
>   Preparing to unpack .../4-libocct-ocaf-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-ocaf-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/4-libocct-ocaf-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKBin.so.7', which is also in package libocct-ocaf-7.3:amd64 7.3.0+dfsg1-5
>   Preparing to unpack .../5-libocct-data-exchange-7.5_7.5.0+dfsg1-1_amd64.deb ...
>   Unpacking libocct-data-exchange-7.5:amd64 (7.5.0+dfsg1-1) ...
>   dpkg: error processing archive /tmp/apt-dpkg-install-ytPrh7/5-libocct-data-exchange-7.5_7.5.0+dfsg1-1_amd64.deb (--unpack):
>    trying to overwrite '/usr/lib/x86_64-linux-gnu/libTKBinXCAF.so.7', which is also in package libocct-data-exchange-7.3:amd64 7.3.0+dfsg1-5
>   Errors were encountered while processing:
>    /tmp/apt-dpkg-install-ytPrh7/0-libocct-foundation-7.5_7.5.0+dfsg1-1_amd64.deb
>    /tmp/apt-dpkg-install-ytPrh7/1-libocct-modeling-data-7.5_7.5.0+dfsg1-1_amd64.deb
>    /tmp/apt-dpkg-install-ytPrh7/2-libocct-modeling-algorithms-7.5_7.5.0+dfsg1-1_amd64.deb
>    /tmp/apt-dpkg-install-ytPrh7/3-libocct-visualization-7.5_7.5.0+dfsg1-1_amd64.deb
>    /tmp/apt-dpkg-install-ytPrh7/4-libocct-ocaf-7.5_7.5.0+dfsg1-1_amd64.deb
>    /tmp/apt-dpkg-install-ytPrh7/5-libocct-data-exchange-7.5_7.5.0+dfsg1-1_amd64.deb
> 
> From looking the the file list of libocct-data-exchange-7.5 I observed
> that there are multiple shared libraries (and nothing else), but all have
> the same SOVERSION (7). So why is the package naming following MAJOR.MINOR
> instead of SOVERSION? The latter would ease maintenance by avoiding lots
> of Breaks+Replaces in the future.
> This is probably the same for all the packages shipping opencascade shared
> libraries.
> 
> cheers,
> 
> Andreas
> 
> PS: If the libraries from 7.3 and 7.5 are not exchangeable (i.e. not API and ABI
> compatible), they should not have the same SOVERSION.