Fixes python-poetry#5727

src/poetry/puzzle/solver.py

@@ -164,21 +164,20 @@ def _solve(
             if package.features:
                 for _package in packages:
                     if (
-                        _package.name == package.name
-                        and not _package.is_same_package_as(package)
+                        not _package.features
+                        and _package.name == package.name
                         and _package.version == package.version
                     ):
                         for dep in package.requires:
-                            if dep.is_same_package_as(_package):
+                            # Prevent adding base package as a dependency to itself
+                            if _package.name == dep.name:
                                 continue
 
                             if dep not in _package.requires:
                                 _package.add_dependency(dep)
-
-                continue
-
-            final_packages.append(package)
-            depths.append(results[package])
+            else:
+                final_packages.append(package)
+                depths.append(results[package])
 
         # Return the packages in their original order with associated depths
         return final_packages, depths