Hello, Andreas Beckmann <a...@debian.org> writes:
> Package: python-persistent,python-zodb > Version: 4.0.8-1 > Severity: serious > User: trei...@debian.org > Usertags: edos-file-overwrite > Control: found -1 1:3.9.7-2 First of all, thanks for finding and reporting such issues, it's greatly appreciated! > Selecting previously unselected package python-zodb. > Preparing to unpack .../python-zodb_1%3a3.9.7-2_amd64.deb ... > Unpacking python-zodb (1:3.9.7-2) ... > dpkg: error processing archive > /var/cache/apt/archives/python-zodb_1%3a3.9.7-2_amd64.deb (--unpack): > trying to overwrite '/usr/lib/python2.7/dist-packages/persistent/wref.py', > which is also in package python-persistent 4.0.8-1 > Errors were encountered while processing: > /var/cache/apt/archives/python-zodb_1%3a3.9.7-2_amd64.deb > > This is a serious bug as it makes installation fail, and violates > sections 7.6.1 and 10.1 of the policy. An optimal solution would > consist in only one of the packages installing that file, and renaming > or removing the file in the other package. Depending on the > circumstances you might also consider Replace relations or file > diversions. If the conflicting situation cannot be resolved then, as a > last resort, the two packages have to declare a mutual > Conflict. Please take into account that Replaces, Conflicts and > diversions should only be used when packages provide different > implementations for the same functionality. > > Here is a list of files that are known to be shared by both packages > (according to the Contents file for sid/amd64, which may be > slightly out of sync): > > usr/lib/python2.7/dist-packages/persistent/__init__.py > [...] From upstream point of view, ZODB3 (aka python-zodb in Debian) used to include persistent, BTrees, ZODB and ZEO modules. However, since ZODB3 3.11.0a1, upstream has split it up into 4 distinct packages (one for each module), bump the version to 4.0 and made ZODB3 a "metapackage" depending on all of them. As of fixing this RC bug for Jessie: Among the four, only persistent package is currently available in Debian, so there is no way to get rid of ZODB3 (at least for Jessie). Barry: If persistent >= 4.0 Debian package is useful on its own to anyone (and thus should not be removed From testing), then can I add a Conflict on both packages and upload them to fix this bug? Cheers, -- Arnaud Fontaine
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