Bread::Board::Literal3pm

  my $c = container PrettyBoring => as {
      # These are Bread::Board::Literal services
      service connect_string => 'dbi:mysql:boring_db';
      service service_url => 'http://api.example.com/v0/boring';
      # And some other services depending on them...
      service dbconn => (
          class => 'DBI',
          block => sub {
              my $s = shift;
              DBI->new($s->param('connect_string');
          },
          dependencies => wire_names(qw( connect_string )),
      );
      service service_request => (
          class => 'HTTP::Request',
          block => sub {
              my $s = shift;
              HTTP::Request->new(POST => $s->param('service_url'));
          },
          dependencies => wire_names(qw( service_url ));
      };
  };
  # OR to use directly:
  my $literal = Bread::Board::Literal->new(
      name  => 'the_answer_to_life_the_universe_and_everything',
      value => 42,
  );
  $c->add_service($literal);