diff --git a/coconut/_pyparsing.py b/coconut/_pyparsing.py
index 6f290d3cb..54790c18b 100644
--- a/coconut/_pyparsing.py
+++ b/coconut/_pyparsing.py
@@ -28,7 +28,6 @@
 from collections import defaultdict
 
 from coconut.constants import (
-    PYPY,
     PURE_PYTHON,
     use_fast_pyparsing_reprs,
     use_packrat_parser,
@@ -187,7 +186,8 @@ def enableIncremental(*args, **kwargs):
     use_computation_graph_env_var,
     default=(
         not MODERN_PYPARSING  # not yet supported
-        and not PYPY  # experimentally determined
+        # commented out to minimize memory footprint when running tests:
+        # and not PYPY  # experimentally determined
     ),
 )
 
diff --git a/coconut/tests/src/cocotest/agnostic/primary_2.coco b/coconut/tests/src/cocotest/agnostic/primary_2.coco
index 9c589e99e..3f9d63a65 100644
--- a/coconut/tests/src/cocotest/agnostic/primary_2.coco
+++ b/coconut/tests/src/cocotest/agnostic/primary_2.coco
@@ -377,12 +377,16 @@ def primary_test_2() -> bool:
     assert list(py_xs) == [] if sys.version_info >= (3,) else [4, 6]
     for xs in [
         zip((x for x in range(5)), (x for x in range(10))),
-        py_zip((x for x in range(5)), (x for x in range(10))),
         map((,), (x for x in range(5)), (x for x in range(10))),
-        py_map((,), (x for x in range(5)), (x for x in range(10))),
     ]:  # type: ignore
         assert list(xs) == list(zip(range(5), range(5)))
         assert list(xs) == []
+    for xs in [
+        py_zip((x for x in range(5)), (x for x in range(10))),
+        py_map((,), (x for x in range(5)), (x for x in range(10))),
+    ]:  # type: ignore
+        assert list(xs) == list(zip(range(5), range(5)))
+        assert list(xs) == [] if sys.version_info >= (3,) else list(zip(range(5), range(5)))
     xs = map((.+1), range(5))
     py_xs = py_map((.+1), range(5))
     assert list(xs) == list(range(1, 6)) == list(xs)