Problem installing missing modules with CPAN::Shell

sotona has asked for the wisdom of the Perl Monks concerning the following question:

Enlightened monks,

I'm trying to check which modules are missing at the particular box which runs my script and install them if needed.

First part (check missing) is ok, but when I try to install module using

CPAN::Shell->install()
[download]

I get the followign error:

Can't locate package CPAN::Debug for @CPAN::Shell::ISA
[download]

despite of CPAN::Debug is present at PERL5LIB path

Any ideas what do I do wrong ?

P.S.: Debian Wheezy 3.2.0-4-amd64, perl 5.20.1

Sapienti sat.

Comment on Problem installing missing modules with CPAN::Shell Select or Download Code

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Re: Problem installing missing modules with CPAN::Shell by hotpelmen (Scribe) on Feb 10, 2015 at 17:32 UTC
Unless you've done so I'd start with trivial checks: Verify CPAN::Debug is accessible when you do `/path/to/perl -e 'use CPAN::Debug'` [download] If more than one version of Perl is installed, use full path for perl command to make sure you're installing the module for the correct version.	[reply] [d/l]
Re^2: Problem installing missing modules with CPAN::Shell by sotona (Scribe) on Feb 11, 2015 at 08:53 UTC
I have only one perl version installed and when I do `/usr/bin/perl -e "use CPAN::Debug"` or `/usr/bin/perl -MCPAN::Debug -e "print 1"` everything is ok Sapienti sat.	[reply] [d/l] [select]
Re^2: Problem installing missing modules with CPAN::Shell by sotona (Scribe) on Feb 12, 2015 at 17:18 UTC
Well, I tried literally everything, including complete de- and re-installation of perl (and "rm -rf" of leftovers) but it did not help. Looks like a bug? Sapienti sat.	[reply]
Re^3: Problem installing missing modules with CPAN::Shell by Anonymous Monk on Feb 12, 2015 at 23:18 UTC
Well, I tried literally everything, including complete de- and re-installation of perl (and "rm -rf" of leftovers) but it did not help. Looks like a bug? No. Looks like user error. Try this, get https://cpan.metacpan.org/authors/id/A/AN/ANDK/CPAN-2.05.tar.gz, untar it and install it Then try running ... and if it fails post the full error message including output of `perl -V`	[reply] [d/l]
Re^4: Problem installing missing modules with CPAN::Shell by sotona (Scribe) on Feb 13, 2015 at 08:07 UTC
Re^5: Problem installing missing modules with CPAN::Shell by Corion (Patriarch) on Feb 13, 2015 at 08:20 UTC
Re: Problem installing missing modules with CPAN::Shell by jmacloue (Beadle) on Feb 11, 2015 at 16:09 UTC
Ahem, quite obvious suggestion but nevertheless - 99% of time if a module is found by `perl -MMod::Name` but is not found by, for example, a CGI script that is because you have different environment in the console and in the script. Try checking `$ENV{PERL5LIB}` to see the difference, maybe you have some part of CPAN library installed locally for your user or something. As a side note - have you seen those `Makefile.PL` files in CPAN distributions? Maybe you are re-inventing the bike here, why not use a standard solution for the problem?	[reply] [d/l] [select]