Prelude.CAPIT is now a built-in primitive. It still generates &| in the Haskell runtime but will be intepreted in the C runtime

src/runtime/c/pgf/reader.c

@@ -709,6 +709,13 @@ pgf_read_symbol(PgfReader* rdr)
 		gu_return_on_exn(rdr->err, gu_null_variant);
 		break;
 	}
+	case PGF_SYMBOL_CAPIT: {
+		gu_new_variant(PGF_SYMBOL_CAPIT,
+		               PgfSymbolCAPIT,
+		               &sym, rdr->opool);
+		gu_return_on_exn(rdr->err, gu_null_variant);
+		break;
+	}
 	default:
 		pgf_read_tag_error(rdr);
 	}