module foo

import bar

type foo {
  Foo
}

fun to-int(x: foo): int {
  match (x) {
    Foo -> 1
  }
}

module bar

public type bar {
  Foo
}

src/foo.kk(11, 5): error: identifier Foo is ambiguous. Possible candidates: 
  Foo    : foo
  bar/Foo: bar/bar
  hint   : give a type annotation to the function parameters or arguments