Item13825: SolrPlugin last update complains about Cache::FileCache, which is installed

While upgrading SolrPlugin, I get :

MISSING
    Cache::FileCache version > 0 required -- installed version is 0 - Required

In working/logs/error.log :

Can't locate Cache/FileCache.pm in @INC (@INC contains: /home/data/www/doc.4next.ch/lib /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl . /home/data/www/doc.4next.ch/lib/CPAN/lib) at /home/data/www/doc.4next.ch/lib/Foswiki/Plugins/SolrPlugin/Index.pm line 29.
 at /home/data/www/doc.4next.ch/lib/Foswiki/Plugins/SolrPlugin/Index.pm line 29.

I've installed this module with : aptitude show libcache-cache-perl ; my server is Ubuntu 12.04.5 LTS , previous installation / upgrades of SolrPlugin did not complain.

# cpanm --sudo --skip-installed Cache::FileCache
Cache::FileCache is up to date. (undef)

# locate FileCache.pm
/usr/share/perl/5.14.2/FileCache.pm
/usr/share/perl5/Cache/FileCache.pm
/usr/share/perl5/Cache/SizeAwareFileCache.pm

-- MichelMallejac - 19 Oct 2015

same:

 MISSING

    Cache::FileCache version > 0 required -- installed version is 0 - Required

root@foswiki:/usr/bin# cpan Cache::FileCache
Loading internal null logger. Install Log::Log4perl for logging messages
CPAN: Storable loaded ok (v2.49_01)
Reading '/root/.cpan/Metadata'
  Database was generated on Wed, 01 Feb 2017 12:41:02 GMT
CPAN: Module::CoreList loaded ok (v5.20150214)
Cache::FileCache is up to date (undef).

-- IgorGiunta - 02 Feb 2017

I get the same error on CentOS. Cache::FileCache is installed. # rpm -qf /usr/share/perl5/vendor_perl/Cache/FileCache.pm perl-Cache-Cache-1.06-12.el7.noarch

The problem seems to be that the DEPENDENCIES for the SolrPlugin has: Cache::FileCache,>0,cpan,Required but Cache::FileCache doesn't actually define a $VERSION variable so the check fails. I don't know enough about the proper syntax of the DEPENDENCIES file to know how to tell it to be OK without a defined version. As a workaround I edited FileCache.pm on my system to add a $VERSION variable but that's not a real long-term fix.

-- DavidM - 15 Feb 2017

Cache::FileCache is part of Cache::Cache ... will fix the DEPENDENCIES accordingly to make the installer happy again.

-- MichaelDaum - 18 Sep 2017

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