in reply to Forcing to ignore LWP/Net::FTP and use wget/lynx etc

From what I can tell (by scanning for LWP), you need to override sub CPAN::has_usable, something like the following should do
#!/usr/bin/perl use CPAN(); $CPAN_has_usable = \&CPAN::has_usable; local *CPAN::has_usable = sub { return if $_[1] =~ /^(?:Net|LWP)/; return $CPAN_has_usable->( @_ ); }; do 'path/to/perl/bin/cpan';

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