The directory indicated by cpan config item keep_source_where (~/.cpan/sources) contains every distribution I've ever attempted to install, going back years. That catch is that it's not specific to a Perl install.

But if one were to set keep_source_where differently when installing for a specifc install of Perl, one could not just track the name of the distros but have the actual distros (by author) that was installed for that install of Perl. Perfect :) 

perl -MCPAN -MCPAN::HandleConfig -e'
    CPAN::HandleConfig::require_myconfig_or_config();
    $CPAN::Config->{keep_source_where} = "/tmp/sources/";
    shell;
' CGI

[download]

created 

/tmp/sources/
/tmp/sources/authors/
/tmp/sources/authors/id/
/tmp/sources/authors/id/F/
/tmp/sources/authors/id/F/FL/
/tmp/sources/authors/id/F/FL/FLORA/
/tmp/sources/authors/id/F/FL/FLORA/CHECKSUMS
/tmp/sources/authors/id/F/FL/FLORA/FCGI-0.71.tar.gz
/tmp/sources/authors/id/M/
/tmp/sources/authors/id/M/MA/
/tmp/sources/authors/id/M/MA/MARKSTOS/
/tmp/sources/authors/id/M/MA/MARKSTOS/CGI.pm-3.52.tar.gz
/tmp/sources/authors/id/M/MA/MARKSTOS/CHECKSUMS

[download]

Note that FCGI is a prereq of CGI.

In reply to Re: What modules got installed? (keep_source_where) by ikegami
in thread What modules got installed? by ikegami

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