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Re: backport of dpkg (>= 1.17.2) and apt (>= 0.9.16.1) for build profiles



Johannes Schauer <j.schauer@email.de> (2014-07-28):
> Quoting Cyril Brulebois (2014-07-28 16:40:49)
> > > diff -Nru apt-0.9.7.9+deb7u2/debian/libapt-pkg4.12.symbols apt-0.9.7.9+deb7u3/debian/libapt-pkg4.12.symbols
> > > --- apt-0.9.7.9+deb7u2/debian/libapt-pkg4.12.symbols  2013-03-01 10:51:21.000000000 +0000
> > > +++ apt-0.9.7.9+deb7u3/debian/libapt-pkg4.12.symbols  2014-07-28 11:32:23.000000000 +0000
> > > @@ -369,6 +369,7 @@
> > >   (c++)"debListParser::VersionHash()@Base" 0.8.0
> > >   (c++)"debListParser::Architecture()@Base" 0.8.0
> > >   (c++)"debListParser::ParseDepends(char const*, char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned int&, bool const&, bool const&)@Base" 0.8.0
> > > + (c++)"debListParser::ParseDepends(char const*, char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, unsigned int&, bool const&, bool const&, bool const&)@Base" 0.9.7.9+deb7u2
> > 
> > This is wrong.
> 
> Why?
> 
> And how would it be done "right"?

Pretty sure 0.9.7.9+deb7u2 doesn't ship the symbol you pretend it does…
(Ansgar told you where to look, by the way.)

> > > diff -Nru python-apt-0.8.8.2/debian/control python-apt-0.8.8.2+deb7u1/debian/control
> > > --- python-apt-0.8.8.2/debian/control 2013-03-13 22:25:59.000000000 +0000
> > > +++ python-apt-0.8.8.2+deb7u1/debian/control  2014-07-28 11:46:59.000000000 +0000
> > > @@ -10,7 +10,7 @@
> > >                 apt-utils,
> > >                 debhelper (>= 7.3.5),
> > >                 fakeroot,
> > > -               libapt-pkg-dev (>= 0.8.11),
> > > +               libapt-pkg-dev (= 0.9.7.9+deb7u3),
> > 
> > I'm pretty sure this a bad idea.
> > 
> > This happened not so long ago:
> >   [12 Jun 2014] DSA-2958 apt - security update
> > 
> > Next apt update would mean python-apt is no longer buildable in stable.
> 
> This is correct. I am not aware of a correct way to express this dependency.

Well, as usual, >= foo together with << bar?

> > I know nothing about python bindings but anyway, it looks like you're
> > not updating doc strings.
> 
> I can easily update all the necessary doc strings. But it seems that more
> fundamental questions should be solved first.

Right.

> > More importantly, what's the impact in packages using those functions? Were
> > packages identified, their code reviewed, and their features tested?
> 
> I might lack the necessary understanding but given the changes expressed in the
> patches I cannot imagine in what way packages depending on apt or python-apt
> would start failing or having any different functionality besides not failing
> when faced with the new syntax.
> 
> For python-apt, none of the exposed python functions gained new arguments and
> thus no code should break. The only difference now is, that it will be able to
> understand the new syntax.
> 
> For libapt-pkg4.12, existing code will be calling ParseDepends in a way which
> sets ParseRestrictionsList to false and thus should not experience any
> functionality change at all. To be able to understand the new syntax as well,
> they'd have to explicitly call ParseDepends with ParseRestrictionsList=true.
> But this is no change in functionality from the status quo.
> 
> If you want us to do any additional tests, I'll be glad to carry them out.

I read this as “no tests have been performed”. Not quite what I'd expect
for things as critical as a new apt in stable…

Mraw,
KiBi.

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