// Duplicate impl detection — two impls for the same (Source, Target)
// pair are both visible from the same `xx` site (because both their
// defining modules are transitively imported). The compiler must
// emit a "duplicate xx conversion" diagnostic naming both modules,
// not silently pick one or the other.
//
// Setup:
//   - 180-impl-duplicate-impl-a.sx: `impl Into(Wrap) for s64` (mul by 10).
//   - 180-impl-duplicate-impl-b.sx: `impl Into(Wrap) for s64` (add 100).
//   - Main imports both; the `xx 7 : Wrap` site must error.
//
// Expected exit = 1, expected output = the focused diagnostic naming
// both impl modules.

#import "modules/std.sx";
#import "./0411-protocols-impl-duplicate-impl-a.sx";
#import "./0411-protocols-impl-duplicate-impl-b.sx";

main :: () -> s32 {
  w : Wrap = xx 7;
  print("w.v = {}\n", w.v);
  0
}