This is relevant for Venus colonization since that considers floating cities. Since one can't use cranes, I was thinking perhaps helicopters or airships could be used to move construction pieces around. One inspiration is the SkyLifter airship.
So imagine one had multiple of these airships, could they then coordinate the assembly of multiple parts in the air, or would this just be way too complicated? I assume one could hoist humans down in a tether to connect the parts once two airships got the parts close to each other and managed to hold them close for long enough time for humans to connect them.