<p></p>
<p><b>@joto</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/osm2pgsql/pull/1168#discussion_r425257167">src/osm2pgsql.cpp</a>:</p>
<pre style='color:#555'>> @@ -63,7 +63,17 @@ int main(int argc, char *argv[])
         auto const outputs =
             output_t::create_outputs(middle->get_query_instance(), options);
 
-        osmdata_t osmdata{middle, outputs};
+        bool const need_dependencies =
+            std::any_of(outputs.cbegin(), outputs.cend(),
+                        [](std::shared_ptr<output_t> const &output) {
+                            return output->need_forward_dependencies();
+                        });
+
+        auto dependency_manager = std::unique_ptr<dependency_manager_t>(
+            need_dependencies ? new full_dependency_manager_t{middle.get()}
+                              : new dependency_manager_t{});
+
+        osmdata_t osmdata{dependency_manager.get(), middle, outputs};
</pre>
<p>Currently the dependency manager doesn't need any configuration. But if it does in the future, so I think it is better created here where the options are available.</p>
<p>Moving into osmdata would be possible, just as with middle and outputs. That's certainly something to consider, but I'd rather do all of them or none of them.</p>

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