Bug#1121356: opm-simulators FTBFS with scotch 7.0.10

[Markus Blatt]

On 11/26/25 17:38, Adrian Bunk wrote:
> On Tue, Nov 25, 2025 at 10:52:32PM +0100, Drew Parsons wrote:
>> On 2025-11-25 22:00, Adrian Bunk wrote:
>>> [ Adding Drew to Cc. ]
>>>
>>> On Tue, Nov 25, 2025 at 08:57:29PM +0100, Markus Blatt wrote:
>>>> Hi,
>>>>
>>>> Both DUNE and OPM have their own cmake scripts for finding
>>>> metis/parmetis or
>>>> the appropriate wrappers from scotch.
>>>>
>>>> It seems like the libraries from scotch changed and they are now
>>>> libscotchmetisv3 and libscotchmetisv5 instead of libscotchmetis.
>>>>
>>>> This broke assumptions made by upstream.
>>
>> But it appears to be sorted out now, isn't it?
>>
>> opm-simulators are now building against the rebuilt libopm-grid-dev.
>>
>> Looks like this was just a transition bug caught in the gap of the scotch
>> transition. Like it hadn't waited before libopm-grid-dev was rebuilt and
>> ready.
> It got "fixed" by unintentionally dropping scotch support in OPM.
>
> And the opm-grid autopkgtest failure blocking testing migration of
> scotch is also caused by that:
> https://tracker.debian.org/pkg/scotch

I see. so migration would happen if scotch opm-grid and opm-simulators 
migrates at the same time.

The latter is blocked by a failing test on ppc64el (thought it was due 
to lto but it isn't. Could not really replicate it on a porter machine, 
though).

I'll try to work around it.

Best,

Markus