#!/[localpath]/perlbrew/perls/perl-5.24.0/bin/perl -d

use strict;
use warnings;
use CGI;

my $q = CGI->new();

print "Content-type: text/htmlnn";
print "<p>key = " . $q->param('myparam') . "</p>n"; #this is always empty
my @names = $q->param;
foreach my $name (@names) {
  print "<p>$name = " . $q->param($name) . "</p>"; #this never runs
}

my $postdata = '';
my $in = *STDIN;
my $bytes = read($in, $postdata, $ENV{'CONTENT_LENGTH'});
print "<p>postdata = $postdata</p>n"; # postdata is empty
print "<p>content length = " . $ENV{'CONTENT_LENGTH'} . "</p>n"; # this number seems correct

foreach my $key (keys %ENV) {
  print "<p>$key --> $ENV{$key}</p>n"; # nothing special here
}

...
LoadModule cgi_module modules/mod_cgi.so
LoadModule perl_module modules/mod_perl.so
...
ScriptAlias /cgi-bin/ "/[siteroot]/cgi-bin/"
Alias /perl/ "/Applications/MAMP/cgi-bin/"
<IfModule perl_module>
    PerlModule ModPerl::Registry
    <Location /perl>
        SetHandler perl-script
        PerlResponseHandler ModPerl::Registry
        PerlOptions +ParseHeaders
        Options +ExecCGI
    </Location>
</IfModule>

> perlbrew list-modules

CGI
Date::Parse
Encode::Locale
HTML::Parser
HTML::Tagset
HTTP::Date
HTTP::Message
IO::HTML
LWP::MediaTypes
Perl
Sub::Uplevel
Test::Deep
Test::Needs
Test::NoWarnings
Test::Warn
Try::Tiny
URI