Bring back and deprecate queries and types imports from beets.library

Author: snejus

beets/library/__init__.py

@@ -1,8 +1,33 @@
+import warnings
+from importlib import import_module
+
 from .exceptions import FileOperationError, ReadError, WriteError
 from .library import Library
 from .models import Album, Item, LibModel
 from .queries import parse_query_parts, parse_query_string
 
+NEW_MODULE_BY_NAME = dict.fromkeys(
+    ("DateType", "DurationType", "MusicalKey", "PathType"), "beets.dbcore.types"
+) | dict.fromkeys(
+    ("BLOB_TYPE", "SingletonQuery", "PathQuery"), "beets.dbcore.query"
+)
+
+
+def __getattr__(name: str):
+    if name in NEW_MODULE_BY_NAME:
+        new_module = NEW_MODULE_BY_NAME[name]
+        warnings.warn(
+            (
+                f"'beets.library.{name}' import is deprecated and will be removed"
+                f"in v3.0.0; import '{new_module}.{name}' instead."
+            ),
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        return getattr(import_module(new_module), name)
+    raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
+
+
 __all__ = [
     "Library",
     "LibModel",

docs/changelog.rst

@@ -54,7 +54,7 @@ Bug fixes:
   e.g. non latin characters as 盗作. If you want to keep the legacy behavior
   set the config option ``spotify.search_query_ascii: yes``.
   :bug:`5699`
-  
+
 For packagers:
 
 * Optional ``extra_tags`` parameter has been removed from
@@ -67,7 +67,7 @@ For plugin developers:
   source registration in the process of introducing typings to the code.
   Custom art sources might need to be adapted.
 * We split the responsibilities of plugins into two base classes
-    #. :class:`beets.plugins.BeetsPlugin` 
+    #. :class:`beets.plugins.BeetsPlugin`
         is the base class for all plugins, any plugin needs to inherit from this class.
     #. :class:`beets.metadata_plugin.MetadataSourcePlugin`
         allows plugins to act like metadata sources. E.g. used by the MusicBrainz plugin. All plugins
@@ -76,15 +76,22 @@ For plugin developers:
         ``album_for_id``, ``candidates``, ``item_candidates``, ``album_distance``, ``track_distance`` methods,
         please update your plugin to inherit from the new baseclass, as otherwise your plugin will
         stop working with the next major release.
-        
+* Several definitions have been moved away from ``beets.library`` module:
+  * ``BLOB_TYPE`` constant, ``PathQuery`` and ``SingletonQuery`` queries have moved
+    to ``beets.dbcore.queries`` module
+  * ``DateType``, ``DurationType``, ``PathType`` types and ``MusicalKey`` class have
+    moved to ``beets.dbcore.types`` module.
+  Old imports are now deprecated and will be removed in version ``3.0.0``.
+
+
 Other changes:
 
 * Refactor: Split responsibilities of Plugins into MetaDataPlugins and general Plugins.
 * Documentation structure for auto generated API references changed slightly.
   Autogenerated API references are now located in the `docs/api` subdirectory.
 * :doc:`/plugins/substitute`: Fix rST formatting for example cases so that each
   case is shown on separate lines.
-* Refactored library.py file by splitting it into multiple modules within the 
+* Refactored library.py file by splitting it into multiple modules within the
   beets/library directory.
 
 2.3.1 (May 14, 2025)