refactor: deprecate poetry.repositories.pool

src/poetry/repositories/__init__.py

 from __future__ import annotations
 
+from poetry.repositories.pool import Pool
 from poetry.repositories.repository import Repository
 from poetry.repositories.repository_pool import RepositoryPool
 
 
-__all__ = ["Repository", "RepositoryPool"]
+__all__ = ["Pool", "Repository", "RepositoryPool"]

src/poetry/repositories/pool.py

+from __future__ import annotations
+
+import warnings
+
+from typing import TYPE_CHECKING
+
+from poetry.repositories.repository_pool import RepositoryPool
+
+
+if TYPE_CHECKING:
+    from poetry.repositories.repository import Repository
+
+
+class Pool(RepositoryPool):
+    def __init__(
+        self,
+        repositories: list[Repository] | None = None,
+        ignore_repository_names: bool = False,
+    ) -> None:
+        warnings.warn(
+            "Object Pool from poetry.repositories.pool is renamed and scheduled for"
+            " removal in poetry release 1.4.0. Please migrate to RepositoryPool from"
+            " poetry.repositories.repository_pool.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        super().__init__(repositories, ignore_repository_names)