インストールしてるモジュール一覧をperllocal.podから

installed_modules.pl

#!perl
use strict;
use warnings;
use Perl6::Say;
use Path::Class;
use Pod::Parser;
use List::MoreUtils qw/uniq/;
use Regexp::Assemble;

my @perllocals = do {
    my $version = do {
        my $info = `perl -v`;
        ($info =~ /\(v(5[\.\d]+)\)/)[0];
    };

    my $search;
    for my $path (@INC) {
        if ($path =~ /(.+?$version)/) {
            $search = $1 and last;
        }
    }
    map {chomp $_; $_} `find $search -name 'perllocal.pod'`;
};

my $search = do {
    my $ra = Regexp::Assemble->new;
    $ra->add('^Module');
    $ra->add('[^:]:[^:]');
    $ra->re
};

my $parser = Pod::Parser->new;

my @modules = (
    uniq
    sort
    grep {
        $_ && $_ !~ /$search/;
    }
    map {
        $_->{'-ptree'}->[0] =~ /^(.+)\|/;
    }
    grep {
        ref($_) eq 'Pod::InteriorSequence'
    }
    map {
        @{$parser->parse_text(scalar file($_)->slurp)};
    }
    @perllocals
);

say $_ for @modules;