 --> [ local path prefix ]/interface/conflict_name.fpp:4:5
  |
4 |     async input port P: P
  |     ^^^^^^^^^^^^^^^^^^^^^ duplicate port instance P
  |
 ::: [ local path prefix ]/interface/conflict_name.fpp:9:5
  |
9 |     import I
  |     -------- port imported from here
  |
 ::: [ local path prefix ]/interface/conflict_name.fpp:8:5
  |
8 |     output port P: P
  |     ---------------- previous instance is here
  |
 ::: [ local path prefix ]/interface/conflict_name.fpp:9:5
  |
9 |     import I
  |     -------- failed to import interface here

