Is there a way to perform a select that uses values from a selection to navigate? Like to select down one path, and then use the selected value to navigate down another?

Seems like collected? is what I was looking for.

Actually, not quite. I'd like to be able to refer to both the collected? values and the structure.

Say for example I want to query this structure:

{:guild {:a {:members ["1234"]}}
 :members {"1234" 1}}

It looks like this can be done with some effort by using the transformed navigator

In this particular case, it would be done in this manner:

(select-one [(transformed [(collect :guilds MAP-VALS :members ALL)
                           :members]
                          #(select-keys %2 %1))
             :members MAP-VALS]
            structure)