Bug#1109174: libfst-dev: fails to upgrade from bookworm because of libfst26

[Ivo De Decker]

Hi,

On Sun, Jul 13, 2025 at 09:48:48AM +0200, Lucas Nussbaum wrote:

[...]

> What happens is that libfst22 and libfst26 cannot be co-installed,
> because libfst22 Conflicts with libfst, which is Provided by libfst26.
> 
> I'm not sure of how to untangle this.

It seems the provides was introduced in 
https://salsa.debian.org/science-team/openfst/-/commit/1de604f36884caa99bb054a125f73ad96d504057
which is in oldstable.

I assume the provides can just be removed. I'm not sure that the provides was
correct in the first place.

Obviously, for that to work, libfst22 and libfst26 need to be co-installable,
so that would need to be tested. It seems the last upload had the intention to
enable that, but the provides was probably missed.

Thanks,

Ivo