Bug#791490: Package libgpac3 should be libgpac4

[Fabian Greffrath]

Am Mittwoch, den 08.07.2015, 06:45 -0500 schrieb Bálint Réczey:
> In my interpretation of [2] this is enough if both packages contain
> the same file while it is not our case.
> IMO 7.6.2 applies here where the Conflicts: is needed, too.
> I have pushed what would work IMO.

Conflicts only apply if two packages are not co-installable in general.
However, this is not the case here: libgpac3 and libgpac4 are generally
co-installable. There is just this one version of libgpac3 for which
this isn't true. For versioned Conflicts like this one, please use
versioned Breaks.

Second, the Replaces field tells apt that in the versioned Breaks lock
-in situation it is better to install libgpac4 and kick out libgpac3 (=
offending.version) at the same time. The alternative approach would be
to keep libgpac3 at the offending version and not install libgpac4 at
all, which is not what we prefer. Thus, please add the Replaces field.

 - Fabian
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