2 versions of a module installed?

From: Kevin Buzzard (buzzard_at_crackpot.ma.ic.ac.uk)
Date: 12/29/04 

Date: Wed, 29 Dec 2004 12:27:34 +0000 (GMT)

Hi. I think I have currently got two versions of Net::DNS installed on
my system. Perl has always run fine on my system and I've never needed
to delve into its inner workings but I appear now to have some problems
(specifically, I have just upgraded spamassassin to 3.0.2 and am now
getting some unexpected error messages). Using linux, debian unstable.

Here's why I think something is wrong.

***

root@crackpot:~# perl -MCPAN -e shell
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.7601)
ReadLine support available (try 'install Bundle::CPAN')

cpan> i Net::DNS
Strange distribution name [Net::DNS]
Module id = Net::DNS
    DESCRIPTION Interface to the DNS resolver
    CPAN_USERID CREIN (Chris Reinhardt <cpan@triv.org>)
    CPAN_VERSION 0.48
    CPAN_FILE C/CR/CREIN/Net-DNS-0.48.tar.gz
    DSLI_STATUS RmhO (released,mailing-list,hybrid,object-oriented)
    MANPAGE Net::DNS - Perl interface to the DNS resolver
    INST_FILE /usr/local/lib/perl/5.8.4/Net/DNS.pm
    INST_VERSION 0.48

cpan>

***

This seems (to me) to indicate that I have V0.48 of Net::DNS installed.
*But* running spamassassin V3.02 e.g. with

$ spamassassin -r < sample_spam.txt > spam.out

gives me errors of the form

Net::DNS version is 0.23, but need 0.34dnsavailable-1 at /usr/local/share/perl/5.8.4/Mail/SpamAssassin/Dns.pm line 1230.

I am a total novice now. Here are some things that might be helpful:

root@crackpot:~# locate Dns.pm
/root/.cpan/build/Mail-SpamAssassin-2.63/blib/lib/Mail/SpamAssassin/Dns.pm
/root/.cpan/build/Mail-SpamAssassin-2.63/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-2.63/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-3.0.2/blib/lib/Mail/SpamAssassin/Dns.pm
/usr/local/Mail-SpamAssassin-3.0.2/lib/Mail/SpamAssassin/Dns.pm
/usr/local/share/perl/5.8.3/Mail/SpamAssassin/Dns.pm
/usr/local/share/perl/5.8.4/Mail/SpamAssassin/Dns.pm
/usr/share/perl5/Mail/SpamAssassin/Dns.pm
root@crackpot:~#

(is that rather a lot of Dns.pm's?)

$ perl -V
[snip]
Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
  Built under linux
  Compiled at Oct 25 2004 01:13:24
  @INC:
    /etc/perl
    /usr/local/lib/perl/5.8.4
    /usr/local/share/perl/5.8.4
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.8
    /usr/share/perl/5.8
    /usr/local/lib/site_perl
    /usr/local/lib/perl/5.8.3
    /usr/local/share/perl/5.8.3

Perl itself will have been installed via debian's apt-get. I installed
spamassassin via the tarball.

Any hints as to how to convince spamassassin (which was compiled and
installed after I installed Net::DNS 0.48) to use the right version?

Cheers,

Kevin

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