Keep existing plugin utils for now

docs/user-guide/expressions/plugins.md

@@ -94,7 +94,7 @@ expression in batches. Whereas for other operations this would not be allowed, t
 # expression_lib/__init__.py
 import polars as pl
 from polars.type_aliases import IntoExpr
-from polars._utils.udfs import _get_shared_lib_location
+from polars.utils.udfs import _get_shared_lib_location
 
 from expression_lib.utils import parse_into_expr
 

py-polars/polars/_utils/udfs.py

@@ -977,17 +977,4 @@ def warn_on_inefficient_map(
             )
 
 
-def is_shared_lib(file: str) -> bool:
-    return file.endswith((".so", ".dll", ".pyd"))
-
-
-def _get_shared_lib_location(main_file: Any) -> str:
-    import os
-
-    directory = os.path.dirname(main_file)  # noqa: PTH120
-    return os.path.join(  # noqa: PTH118
-        directory, next(filter(is_shared_lib, os.listdir(directory)))
-    )
-
-
-__all__ = ["BytecodeParser", "warn_on_inefficient_map", "_get_shared_lib_location"]
+__all__ = ["BytecodeParser", "warn_on_inefficient_map"]

py-polars/polars/utils/udfs.py

@@ -0,0 +1,15 @@
+import os
+from typing import Any
+
+__all__ = ["_get_shared_lib_location"]
+
+
+def _get_shared_lib_location(main_file: Any) -> str:
+    directory = os.path.dirname(main_file)  # noqa: PTH120
+    return os.path.join(  # noqa: PTH118
+        directory, next(filter(_is_shared_lib, os.listdir(directory)))
+    )
+
+
+def _is_shared_lib(file: str) -> bool:
+    return file.endswith((".so", ".dll", ".pyd"))