Re: What to do about XML::LibXML / XML::LibXSLT failures with old versions of libxml2 and libxslt?

On Thu, 2013-05-09 at 10:11 +0300, Shlomi Fish wrote:
> Hi all,
> 
> I keep getting reports of failures like this to my modules, such as:
> 
> * http://www.cpantesters.org/cpan/report/7d08b688-b80d-11e2-ad73-dd0a7cfad375
> 
> * http://www.cpantesters.org/cpan/report/2e8c9bae-b7e6-11e2-8285-28e030ca8a65
> 
> These failures should not be happening, and they are likely caused by old
> versions of libxml2 and/or libxslt. Now, one option would be to require only
> the latest version in XML::LibXML and XML::LibXSLT, but this may inconvenience
> some users of older systems.
> 
> Is there a better alternative?

If certain functionality of XML::LibXML/LibXSLT is not working due to
deficiencies of the installed version of the underlying library, then
ideally that should be picked up by the XML::LibXML/LibXSLT test suites
and installation should fail at that point.

The XML::LibXML Makefile.PL already has a blacklist section that lists
known broken library versions.

If XML::GrammarBase requires certain features of XML::LibXML that don't
work on a given system then the the installation of XML::LibXML should
fail and the report should go to the maintainer of XML::LibXML rather
than the maintainer of XML::GrammarBase.

Of course that won't protect you against people who 'force' install the
dependencies but hopefully that wouldn't include any cpantester systems.

Regards
Grant


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