iOS lock step keyboard + metal

examples/issue-0034.sx

@@ -0,0 +1,14 @@
+// Phase 5 verification: 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 clean
+// "duplicate xx conversion" diagnostic naming both modules.
+
+#import "modules/std.sx";
+#import "./issue-0034-impl-a.sx";
+#import "./issue-0034-impl-b.sx";
+
+main :: () -> s32 {
+  w : Wrap = xx 7;
+  print("w.v = {}\n", w.v);
+  0;
+}