refactor path to root preventing circular import (#18357)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.github/workflows/ci-tests-store.yml

@@ -10,6 +10,11 @@ on:
     paths:
       - ".actions/*"
       - "requirements/store/**"
+      - "src/lightning/__about__.py"
+      - "src/lightning/__init__.py"
+      - "src/lightning/__main__.py"
+      - "src/lightning/__setup__.py"
+      - "src/lightning/__version__.py"
       - "src/lightning/store/**"
       - "tests/tests_store/**"
       - "pyproject.toml"  # includes pytest config

src/lightning/__init__.py

@@ -1,6 +1,5 @@
 """Root package info."""
 import logging
-import os
 
 # explicitly don't set root logger's propagation and leave this to subpackages to manage
 _logger = logging.getLogger(__name__)
@@ -29,9 +28,7 @@
 from lightning.pytorch.trainer import Trainer  # noqa: E402
 
 import lightning.app  # isort: skip # noqa: E402
-import lightning.store  # isort: skip # noqa: E402
-
-lightning.app._PROJECT_ROOT = os.path.dirname(lightning.app._PROJECT_ROOT)
+import lightning.store  # isort: skip # noqa: E402, F401
 
 
 __all__ = [

src/lightning/app/__init__.py

@@ -45,5 +45,8 @@
 
 _PACKAGE_ROOT = os.path.dirname(__file__)
 _PROJECT_ROOT = os.path.dirname(os.path.dirname(_PACKAGE_ROOT))
+if __package_name__ == "lightning":
+    _PACKAGE_ROOT = os.path.dirname(_PACKAGE_ROOT)
+    _PROJECT_ROOT = os.path.dirname(_PROJECT_ROOT)
 
 __all__ = ["LightningApp", "LightningFlow", "LightningWork", "LightningPlugin", "BuildConfig", "CloudCompute"]