 --> [ local path prefix ]/interface/import_of_broken_interface.fpp:5:5
  |
5 |     output port p: P
  |     ^^^^^^^^^^^^^^^^ duplicate port instance p
  |
 ::: [ local path prefix ]/interface/import_of_broken_interface.fpp:4:5
  |
4 |     output port p: P
  |     ---------------- previous instance is here

