On Thu, 25 Apr 2019 16:36:38 +0200 Petr Pisar <ppi...@redhat.com> wrote: > It was a long time ago I wrote to this list. I'm thinking about > changing site paths. > > Now, perl configures site paths to: > > /usr/local/lib64/perl5 > /usr/local/share/perl5 > > so that anyone installing distributions from CPAN in a system-wide > manner will install his modules there. These two paths are listed > before core and vendor path used by Fedora packages in order to allow > users to override Perl modules coming with Fedora. > > This layout has the nice feature that user's code is available across > Fedora upgrades. However, this feature is also bad because perl tends > to change ABI and as a result XS modules stop working and becuse the > site location precedence they can hinder even Fedora's Perl code. > Then inexperienced users report bugs for perl that Perl stopped > working after upgrade Fedora. > > My proposal is make the two paths changing with every new > incompatible Perl release (that happens every year with a new minor > Perl version). Example: > > /usr/local/lib64/perl5/5.30 > /usr/local/share/perl5/5.30 > > As a result when users upgrade to Perl 5.30, their locally installed > modules become unavailable and thus they won't be able to affect the > new system. Also the user immediatelly recongnizes that his locally > installed code "disappeared" instead of receiving some cryptic error > message from XSLoader few days later when some optional XS module > gets loaded.
Having seen a few of these bugs, I think this is a good idea. > So if we conclude that this change is good and should be implemented, > the only uncertainity is the issue of aestetic: How exactly should > the paths be named? I can see these posibilities: > > > /usr/local/share/perl5/5.30 > /usr/local/share/perl5/30 > /usr/local/share/perl5.30 > > The first two keep all Perl files under one directory, while the > third one proliferates directories right under /usr/local/share. It > also is backward compatible for people who back up or NFS-mount the > paths. The last two makes the path a little bit shorter. While the > first and last resembles a soname we already give to libperl.so > (/usr/lib64/libperl.so.5.30). The first two have also a very tiny > posibility of a clash with Perl modules namespaced into "5.30::" or > "30::" that could survive from current days (installed > into /usr/local/share/perl5). I like the first option. > > Any opinions? Should we go with this change? Wich format do you like > most? I like the first one too. Paul. _______________________________________________ perl-devel mailing list -- perl-devel@lists.fedoraproject.org To unsubscribe send an email to perl-devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/perl-devel@lists.fedoraproject.org
