if !defined $p || $input->revision ne $p->revision || $input->type ne $p->type || $input->uri ne $p->uri || 

                if !defined $p || ($input->revision || "") ne ($p->revision || "") || $input->type ne $p->type || ($input->uri || "") ne ($p->uri || "") || 

sub narinfo :Path('*.narinfo') {
    my ($self, $c) = @_;
    $c->stash->{current_view} = 'NixInfo';
}