local: Really deprecate local/data_dir

docs/changelog.rst

@@ -10,6 +10,12 @@ v1.2.0 (UNRELEASED)
 
 Feature release.
 
+Local
+-----
+
+- Made :confval:`local/data_dir` really deprecated. This change breaks older
+  versions of Mopidy-Local-SQLite and Mopidy-Local-Images.
+
 Cleanups
 --------
 

mopidy/local/__init__.py

@@ -23,7 +23,7 @@ class Extension(ext.Extension):
         schema = super(Extension, self).get_config_schema()
         schema['library'] = config.String()
         schema['media_dir'] = config.Path()
-        schema['data_dir'] = config.Path(optional=True)
+        schema['data_dir'] = config.Deprecated()
         schema['playlists_dir'] = config.Deprecated()
         schema['tag_cache_file'] = config.Deprecated()
         schema['scan_timeout'] = config.Integer(

mopidy/local/ext.conf

@@ -2,7 +2,6 @@
 enabled = true
 library = json
 media_dir = $XDG_MUSIC_DIR
-data_dir = $XDG_DATA_DIR/mopidy/local
 scan_timeout = 1000
 scan_flush_threshold = 100
 scan_follow_symlinks = false