It also defines a fix for that

sub xs_c {
    my $cmd = shift->SUPER::xs_c(@_);
    $cmd .= << 'END';
    sed -i -e 's/newXSproto("TagLib/newXSproto("Audio::TagLib/g' $*.c
    sed -i -e 's/XS(boot_TagLib)/XS(boot_Audio__TagLib)/g' $*.c
END
    return $cmd;
}
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