[buildd-tools-devel] Make alternative build-depends work on backports buildds (was: Give back ktorrent in squeeze-backports)
Roger Leigh
rleigh at codelibre.net
Tue Jul 26 20:46:02 UTC 2011
On Tue, Jul 26, 2011 at 11:18:42PM +0300, Modestas Vainius wrote:
> Hello,
>
> On antradienis 26 Liepa 2011 22:16:17 Kurt Roeckx wrote:
> > If you want to make the buildds use 0.62, someone is going to need
> > to put time in it to test that it actually works on the buildds.
> >
> > I'm also not sure we want to use the aptitude resolver in that
> > case.
>
> At the moment, no other resolver can reasonably pull off "install from non-
> default repository only and only if dependency is not satisfiable in the
> default repository", which is essential for both experimental and backports.
> You don't expect me to sign off the plan which you would bring experimental
> and backports autobuilding to the stone age it was before, do you?
>
> I guess sbuild maintainers should know that smarter aptitude "A | B"
> resolution is not appropriate for Debian buildds and might be a showstopper
> for upgrading buildds to >= 0.62 ...
This is disabled by default. It's only intended for
backports/experimental use. But it's there as a configurable option
for that type of situation.
The $resolve_alternatives option filters the dependencies before
creating the dependency package, so that apt/aptitude don't see
the alternatives at all. They just get the first alternative.
(Note: does not include alternatives for the same package, e.g.
for different versions, which are explicitly allowed since 0.62.3.
It also doesn't include arch-specific alternatives; the set is reduced
to only the host arch in all cases.)
Regards,
Roger
--
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