[Pkg-utopia-maintainers] Bug#847202: Need versioned libostree deps

[Simon McVittie]

On Tue, 06 Dec 2016 at 14:49:35 +0100, Alexander Larsson wrote:
> The flatpak package has versioned build-deps on ostree, but the actual
> package-deps (i.e. flatpak -> libostree) are not.

Versioned library dependencies on Debian and its derivatives are normally
generated via dpkg-shlibdeps, rather than hard-coded in debian/control.
In the case of flatpak depending on libostree, the dependency that is
generated is the earliest version that contained all the symbols used by
the just-built flatpak.

Are you aware of a semantic change in libostree that would require
tighter dependencies for users of a particular symbol or symbols?
If so, we can do that by editing debian/*.symbols in ostree, which
has the advantage of working for all libostree users (not specific to
flatpak).

In practice flatpak <https://packages.debian.org/unstable/flatpak> and
libflatpak0 <https://packages.debian.org/unstable/libflatpak0> currently
both have dependencies on libostree-1-1 (>= 2016.14), except for the
unofficial ppc64 port which has an outdated build of both flatpak and
ostree. So I don't think there's any practical problem here?

Can you point me to a concrete example of building the flatpak source
package against a particular version of ostree, and getting insufficient
dependencies as a result?

Thanks,
    S