Bug#886742: postgresql-9.4-postgis-2.1 missing in stretch

[Jürgen Fuchsberger]

On 2018-01-10 09:10, Bas Couwenberg wrote:
> On 2018-01-10 08:35, Jürgen Fuchsberger wrote:
>> On 2018-01-09 18:18, Sebastiaan Couwenberg wrote:
>>> severity 886742 normal
>>> thanks
>>>
>>> Hi Juergen,
>>>
>>> On 01/09/2018 02:16 PM, Bas Couwenberg wrote:
>>>> On 2018-01-09 14:08, Christoph Berg wrote:
>>>>> Re: Juergen Fuchsberger 2018-01-09
>>>>>> Due to missing postgresql-9.4-postgis-2.1 in stretch, a postgis
>>>>>> enabled
>>>>>> database becomes corrupt when upgrading from jessie to stretch since
>>>>>> the required postgis libraries are missing. This can cause serious
>>>>>> data
>>>>>> loss, because once upgraded to stretch, the postgis data can't be
>>>>>> accesed nor dumped (Database gives error "could not access file
>>>>>> "$libdir/postgis-2.1": no such file or directory").
>>>
>>> The database is not corrupt, your old database still works (after
>>> installing the old postgis).
>>
>> Sure, but I can't install the old postgis-2.1 because it is not
>> available in stretch.
> 
> So temporarily add the sources for jessie and install postgis from
> jessie and remove the sources again.
> 
> Or use the symlink hack.
> 
>> I think the problem is that postgis-2.1 was removed on updating which
>> should not be the case, should it?
> 
> Removing packages no longer in the distribution your upgrading to is
> quite common.
> 
OK, this is all clear - *but*: is this behavior really ok? Isn't it
affecting every single Debian user when upgrading from Jessie to Stretch
if he is running postgresql + postgis?

Best,
Juergen