chore: Removed deprecation by switching to importlib.metadata

Author: tabedzki

datajoint/plugin.py

@@ -1,7 +1,7 @@
 import logging
 from pathlib import Path
 
-import pkg_resources
+from importlib.metadata import distribution, entry_points
 from cryptography.exceptions import InvalidSignature
 from otumat import hash_pkg, verify
 
@@ -13,12 +13,18 @@
 def _update_error_stack(plugin_name):
     try:
         base_name = "datajoint"
-        base_meta = pkg_resources.get_distribution(base_name)
-        plugin_meta = pkg_resources.get_distribution(plugin_name)
+        base_meta = distribution(base_name)
+        plugin_meta = distribution(plugin_name)
 
-        data = hash_pkg(pkgpath=str(Path(plugin_meta.module_path, plugin_name)))
-        signature = plugin_meta.get_metadata(f"{plugin_name}.sig")
-        pubkey_path = str(Path(base_meta.egg_info, f"{base_name}.pub"))
+        # Get the package location - equivalent to module_path
+        plugin_location = plugin_meta.locate_file("")
+        data = hash_pkg(pkgpath=str(Path(plugin_location.parent, plugin_name)))
+
+        # Get signature metadata - equivalent to get_metadata()
+        signature = plugin_meta.read_text(f"{plugin_name}.sig")
+
+        # Get public key path - equivalent to egg_info
+        pubkey_path = str(Path(base_meta.locate_file("").parent, f"{base_name}.pub"))
         verify(pubkey_path=pubkey_path, data=data, signature=signature)
         logger.info(f"DataJoint verified plugin `{plugin_name}` detected.")
         return True
@@ -28,19 +34,28 @@ def _update_error_stack(plugin_name):
 
 
 def _import_plugins(category):
+    # Get entry points for the group - equivalent to iter_entry_points()
+    group_name = f"datajoint_plugins.{category}"
+    eps = entry_points()
+
+    # Handle both Python 3.9 and 3.10+ entry points API
+    if hasattr(eps, 'select'):
+        group_eps = eps.select(group=group_name)
+    else:
+        group_eps = eps.get(group_name, [])
+
     return {
         entry_point.name: dict(
             object=entry_point,
-            verified=_update_error_stack(entry_point.module_name.split(".")[0]),
-        )
-        for entry_point in pkg_resources.iter_entry_points(
-            "datajoint_plugins.{}".format(category)
+            verified=_update_error_stack(entry_point.module.split(".")[0]),
         )
+        for entry_point in group_eps
         if "plugin" not in config
         or category not in config["plugin"]
-        or entry_point.module_name.split(".")[0] in config["plugin"][category]
+        or entry_point.module.split(".")[0] in config["plugin"][category]
     }
 
 
 connection_plugins = _import_plugins("connection")
 type_plugins = _import_plugins("datatype")
+