fixup! Implement chained exceptions

Author: jepler

py/circuitpy_mpconfig.h

@@ -225,7 +225,7 @@ typedef long mp_off_t;
 #define MICROPY_CPYTHON_COMPAT                (CIRCUITPY_FULL_BUILD)
 #endif
 #ifndef MICROPY_CPYTHON_EXCEPTION_CHAIN
-#define MICROPY_CPYTHON_EXCEPTION_CHAIN       (CIRCUITPY_CPYTHON_COMPAT)
+#define MICROPY_CPYTHON_EXCEPTION_CHAIN       (CIRCUITPY_FULL_BUILD)
 #endif
 #define MICROPY_PY_BUILTINS_POW3              (CIRCUITPY_BUILTINS_POW3)
 #define MICROPY_PY_FSTRINGS                   (1)

tests/run-tests.py

@@ -512,8 +512,12 @@ def run_tests(pyb, tests, args, result_dir, num_threads=1):
         skip_tests.add("basics/scope_implicit.py")  # requires checking for unbound local
         skip_tests.add("basics/try_finally_return2.py")  # requires raise_varargs
         skip_tests.add("basics/unboundlocal.py")  # requires checking for unbound local
-        skip_tests.add(
-            "circuitpython/traceback_test.py"
+        skip_tests.update(
+            (
+                "basics/chained_exception.py",
+                "circuitpython/traceback_test.py",
+                "circuitpython/traceback_test_chained.py",
+            )
         )  # because native doesn't have proper traceback info
         skip_tests.add("extmod/uasyncio_event.py")  # unknown issue
         skip_tests.add("extmod/uasyncio_lock.py")  # requires async with