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Re: mk-build-deps cannot install particular version of Build-Depends packages

On Thu, Aug 25, 2016 at 9:29 PM, The Wanderer wrote:

> In other words: the problem here is the fact that apt's priorities in
> this regard are messed up.

The same will happen with custom priorities set.

> If there exists a dependency solution which will achieve the result
> requested on the command line (here, installing the lower version of the
> depended-on package), that solution should be chosen over any which do
> not achieve that result; if that solution involves removing or
> downgrading packages, it should be presented for confirmation before
> proceeding.

I don't think that apt should step outside the configured priorities
without instruction from the user. Since apt doesn't currently
interact with the user (but aptitude does), it can only print an
error. That error could be improved with info about alternative
solutions to try that are outside the configured priorities, using the
-t suite and somepkg/suite syntax.

That said, in this case the solution is within the configured
priorities so apt could do better.



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