bug#31216: commit 217b8c2e0 produces 'Can't locate Date/Parse.pm in @INC Error' perl error

[Leo Famulari]

On Fri, Apr 20, 2018 at 07:46:45PM -0400, Leo Famulari wrote:
> On Fri, Apr 20, 2018 at 02:41:52PM +0200, Julien Lepiller wrote:
> > Hi, I don't think this is fully fixed. On current master, trying to run
> > po4a (a perl application that guix now depends on to generate the
> > translation of the manual), I get the following:
> > 
> > [env]$ po4a-updatepo
> > Can't locate Locale/Po4a/Po.pm in @INC (you may need to install the
> > Locale::Po4a::Po module) (@INC
> > contains: 
> > /gnu/store/b10z3mm4nyvzwq6b7537nhckmilbv7bm-po4a-0.47/lib/perl5/site_perl 
> > /home/tyreunom/.guix-profile/lib/perl5/site_perl 
> > /home/tyreunom/.guix-profile/lib/perl5/site_perl 
> > /home/tyreunom/.guix-profile/lib/perl5/site_perl 
> > /gnu/store/43vb2vnv7alwi40ms5qsb9i84rs0xb6s-perl-5.26.2/lib/perl5/site_perl/5.26.2/x86_64-linux-thread-multi
> >  
> > /gnu/store/43vb2vnv7alwi40ms5qsb9i84rs0xb6s-perl-5.26.2/lib/perl5/site_perl/5.26.2
> >  
> > /gnu/store/43vb2vnv7alwi40ms5qsb9i84rs0xb6s-perl-5.26.2/lib/perl5/5.26.2/x86_64-linux-thread-multi
> >  /gnu/store/43vb2vnv7alwi40ms5qsb9i84rs0xb6s-perl-5.26.2/lib/perl5/5.26.2)
> > at 
> > /gnu/store/b10z3mm4nyvzwq6b7537nhckmilbv7bm-po4a-0.47/bin/.po4a-updatepo-real
> > line 168.
> > 
> > What fixed the issue was adding
> > $GUIX_ENVIRONMENT/lib/perl5/site_perl/5.26.1 to the PERL5LIB variable.
> > 
> > It used to work until very recently, but I wonder why the version number
> > is 5.26.1 if perl is 5.26.2?
> 
> Okay, something still needs fixing but I'm not sure what. I won't be
> able to take a closer look until Monday. Anyone else is free to try :)

Btw, an easy way to start debugging would be to use `git bisect` to
confirm which commit introduced the problem.

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