How do I get the defaults without duplicates?

Thanks

#!/usr/bin/perl --

system qw[
module-starter
--author=name
--email=email
--module=TW
--module=TW::Plugin::A
--module=TW::Plugin::B
--module=TW::Plugin::C
];
chdir qw[ TW ];
system qw[
podweaver
];

# shows duplicates are generated
system qw[
grep "^=head" lib/TW.pm
];

__END__
Added to MANIFEST: Changes
Added to MANIFEST: ignore.txt
Added to MANIFEST: lib/TW.pm
Added to MANIFEST: lib/TW/Plugin/A.pm
Added to MANIFEST: lib/TW/Plugin/B.pm
Added to MANIFEST: lib/TW/Plugin/C.pm
Added to MANIFEST: Makefile.PL
Added to MANIFEST: MANIFEST
Added to MANIFEST: README
Added to MANIFEST: t/00-load.t
Added to MANIFEST: t/boilerplate.t
Added to MANIFEST: t/manifest.t
Added to MANIFEST: t/pod-coverage.t
Added to MANIFEST: t/pod.t
Created starter directories and files
No META.json or META.yml file found, is '.' a distribution directory?
No 'weaver.ini' found, using Pod::Weaver defaults, this will most like
+ly insert duplicate sections
Weaving file 'lib/TW.pm'
[@Default/Name] couldn't find abstract in lib/TW.pm
Weaving file 'lib/TW/Plugin/A.pm'
[@Default/Name] couldn't find abstract in lib/TW/Plugin/A.pm
Weaving file 'lib/TW/Plugin/B.pm'
[@Default/Name] couldn't find abstract in lib/TW/Plugin/B.pm
Weaving file 'lib/TW/Plugin/C.pm'
[@Default/Name] couldn't find abstract in lib/TW/Plugin/C.pm
=head1 NAME
=head1 VERSION
=head1 SYNOPSIS
=head1 NAME
=head1 VERSION
=head1 EXPORT
=head1 SUBROUTINES/METHODS
=head2 function1
=head2 function2
=head1 AUTHOR
=head1 BUGS
=head1 SUPPORT
=head1 ACKNOWLEDGEMENTS
=head1 LICENSE AND COPYRIGHT
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