error: type 'Box' is ambiguous: it is declared in multiple flat-imported modules; qualify the reference or remove the duplicate import
  --> examples/0815-route-all-new-surfaces-ambiguous.sx:25:12
   |
25 | BoxPtr :: *Box;
   |            ^^^

error: type 'Box' is ambiguous: it is declared in multiple flat-imported modules; qualify the reference or remove the duplicate import
  --> examples/0815-route-all-new-surfaces-ambiguous.sx:27:21
   |
27 | WrapU :: union { b: Box; n: i32; }
   |                     ^^^

error: type 'Box' is ambiguous: it is declared in multiple flat-imported modules; qualify the reference or remove the duplicate import
  --> examples/0815-route-all-new-surfaces-ambiguous.sx:29:20
   |
29 | WrapE :: enum { V: Box; }
   |                    ^^^

error: type 'Box' is ambiguous: it is declared in multiple flat-imported modules; qualify the reference or remove the duplicate import
  --> examples/0815-route-all-new-surfaces-ambiguous.sx:32:20
   |
32 |     sz := size_of((Box, i32));
   |                    ^^^

error: type 'Box' is ambiguous: it is declared in multiple flat-imported modules; qualify the reference or remove the duplicate import
  --> examples/0815-route-all-new-surfaces-ambiguous.sx:33:20
   |
33 |     x : union { b: Box; n: i32 } = ---;
   |                    ^^^