use P5 qw[ LWP::Simple ];
...

my $url :String = <...some P6 source>;
my $content = p5call( "LWP::Simple::get( $url )" );

##</code><code>##

use P5 qw[  DBI DBD::Pg ];

...
my $dbi = P5Object( "DBI->connect( $dataSource, $userName, $userAuth, \%attrs" ); );
my $sth = $dbi->prepare( 'SOME SQL HERE' );
...