I think you're on the right track with the BEGIN block. Here's an example that (I hope) removes Net::FTP and any modules loaded by Net::FTP from %INC: 
BEGIN {
use strict;
use warnings;
use Carp;
use Digest::MD5;
our %inc_copy = %INC;
};

use Net::FTP;
%INC = %inc_copy;

for(keys(%INC)) {print "$_: $INC{$_}\n"}

[download]

Note that I explicitly loaded Carp.pm, and that Net::FTP also loads Carp.pm. Do you therefore require that Carp.pm not appear in %INC ?
With the above example, Carp.pm still appears in %INC.

Cheers,
Rob

In reply to Re: How can I prevent a module from being added to the %INC hash? by syphilis
in thread How can I prevent a module from being added to the %INC hash? by jacques

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