Bug#1003176: transition: perl 5.34

[Alex <gaaf@gmx.net>]

On donderdag 10 februari 2022 14:59:59 CET Paul Gevers wrote:
> > The "collectd" package recommends libperl5.34 as it has a loadable
> > module built against libperl5.34. The transition criteria however
> > will not consider rebuilding the package even though in the
> > current state in unstable it is broken for any practical usage. The
> > module still loads, as libperl5.32 is still present, but the
> > executed perl code fails on lots of missing packages as their 5.32
> > version is already replaced with the 5.34 version.
>
>
> Hmm, I *think* libperl* is co-installable on purpose,

Probably, but that's only useful if the perl script doesn't use any
modules with compiled code.



> so if stuff
> breaks, is it because you expect more than you ask for or because you
> also link against other packages that link against the latest
> version and you get symbols double

I'm not compiling anything, just trying to run a script which uses
"HTML::Parser" via an embedded perl interpreter in collectd.



> (I am not sure if I use the right
> terminology, but I hope you understand what I mean)? Do you know?

I don't think I do, unfortunately.


Because the collectd perl plugin is linked against libperl5.32, my
script fails as libhtml-parser-perl is already upgraded to 5.34.

I agree that package dependencies probably won't be able to solve this,
but that's not the message I'm trying to convey.

The issue is that in order for my script to work again, I must wait
until collectd is recompiled against libperl5.34. Because of the
criteria/conditions in the transition, this won't happen automatically
as collectd only has a recommends against libperl5.32, not a depends.

I think in case of a recommends on a _library_, it is warranted to
trigger a rebuild too, as recommends on libraries mostly implies that it
will be dl-opened instead of linked. And dl-opended libraries have the
same versioning constraints as directly linked ones.

Hence my request to add "recommends ~ libperl5.43" to the transition
criteria.
--
mvg,

Alex Hermann