I don’t know how to do it in geonodes, but you can go to preferences->Extensions and in search type extra. Install Extra Mesh Objects. Once that is enabled you can do the following in 3D Viewport. Shift+a->Mesh->extra->Honeycomb. Then use adjust last operator(F9 or expand box on the bottom left corner of viewport) Set the number of rows and columns. Cell Diameter is the overall size of the mesh. Then set edge width to 0 so that the second edge is on top of the other. It will look like it has disappeared, but it hasn’t. Then give it GeoNode. Put a Merge by distances node between the group input and group output. Then you can add a mesh to curve and curve to mesh with the curve circle as the profile.
