dedent in memory modules

micropip/_mock_package.py

@@ -3,6 +3,7 @@
 import importlib.util
 import sys
 from collections.abc import Callable
+from textwrap import dedent
 
 
 class MockDistribution(importlib.metadata.Distribution):
@@ -62,7 +63,7 @@ def exec_module(self, module):
         init_object = _mock_modules[module.__name__]
         if isinstance(init_object, str):
             # run module init code in the module
-            exec(init_object, module.__dict__)
+            exec(dedent(init_object), module.__dict__)
         elif callable(init_object):
             # run module init function
             init_object(module)

tests/test_micropip.py

@@ -198,9 +198,10 @@ def mock_fetch(monkeypatch, mock_importlib, wheel_base):
 @pytest.fixture(scope="module")
 def wheel_path(tmp_path_factory):
     # Build a micropip wheel for testing
-    import build
     from build.env import IsolatedEnvBuilder
 
+    import build
+
     output_dir = tmp_path_factory.mktemp("wheel")
 
     with IsolatedEnvBuilder() as env:
@@ -950,7 +951,7 @@ def capture_out(x):
         stdout_captured += x
 
     sys.stdout.write = capture_out
-    add_mock_package("test_1", "1.0.0")
+    add_mock_package("test_1", "1.0.0", persistent=True)
     add_mock_package(
         "test_2",
         "1.2.0",
@@ -961,6 +962,7 @@ def fn():
             print("Hello from fn")
         """,
         },
+        persistent=True,
     )
     import t1