  --> [ local path prefix ]/interface/failed_import_keeps_merged_ports.fpp:8:5
   |
 8 |     output port x: P
   |     ^^^^^^^^^^^^^^^^ duplicate port instance x
   |
  ::: [ local path prefix ]/interface/failed_import_keeps_merged_ports.fpp:13:5
   |
13 |     import B
   |     -------- port imported from here
   |
  ::: [ local path prefix ]/interface/failed_import_keeps_merged_ports.fpp:4:5
   |
 4 |     output port x: P
   |     ---------------- previous instance is here
   |
  ::: [ local path prefix ]/interface/failed_import_keeps_merged_ports.fpp:12:5
   |
12 |     import A
   |     -------- previous instance imported from here
   |
  ::: [ local path prefix ]/interface/failed_import_keeps_merged_ports.fpp:13:5
   |
13 |     import B
   |     -------- failed to import interface here

