error: expected type; found constant `CONST`
   ╭▸ test/ui/invalid_key_type.aldrin:43:21
   │
43 │ newtype Set18 = set<invalid_key_type_import::CONST>;
   ╰╴                    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ type expected here