On Thu, 11 May 2017 at 15:33:41 +0200, Daniel Baumann wrote:
> On 05/11/17 01:27, Aurelien Jarno wrote:
> > The build daemons use aspcud as resolver for the experimental
> > distribution, as aptitude is not able to handle many cases.
>
> why not using apt?
Because the expected behaviour for experimental and *-backports is
not the same as all the other suites.
In unstable, testing, stable, (old*)stable and security suites, it
is sufficient to enable some apt sources, and take the newest version
of each package available from any source.
However, that's a bad heuristic for backports. For example, libglib2.0-0
has a jessie backport, presumably because some package that was backported
needs it. However, GLib users in backports don't necessarily need that
version: for example, libostree and flatpak can work with the GLib from
jessie. Preferring to build against the version in jessie, and only
using the version from backports if a versioned build-dep makes it strictly
necessary, means that you don't need to upgrade GLib (potentially
destabilizing unrelated packages) just to get the flatpak backport.
Similarly, in experimental, just because a build-dependency is
available in experimental at a newer version, that doesn't necessarily
mean that all other experimental packages that depend on that library
need the newer version.
S
