Fast depends v3 compatibility fix

src/dependency_injector/wiring.py

@@ -76,11 +76,29 @@ with suppress(ImportError):
 
     MARKER_EXTRACTORS.append(extract_marker_from_fastapi)
 
+# Fast-depends support for both old and new versions
+FastDepends = None
+FastDependant = None
+
+# Try to import from different locations to support both versions
 with suppress(ImportError):
+    # Try version 3.0.0+ first (Dependant from model)
+    from fast_depends.dependencies.model import Dependant as FastDependant
+
+    def extract_marker_from_dependant_fast_depends(param: Any) -> Any:
+        # Check for Dependant (3.0.0+)
+        if FastDependant is not None and isinstance(param, FastDependant):
+            return param.dependency
+        return None
+
+    MARKER_EXTRACTORS.append(extract_marker_from_dependant_fast_depends)
+
+with suppress(ImportError):
+    # Try version < 3.0.0 (Depends class)
     from fast_depends.dependencies import Depends as FastDepends
 
     def extract_marker_from_fast_depends(param: Any) -> Any:
-        if isinstance(param, FastDepends):
+        if FastDepends is not None and isinstance(param, FastDepends):
             return param.dependency
         return None
 

tox.ini

@@ -17,7 +17,7 @@ deps=
     mypy_boto3_s3
     pydantic-settings
     werkzeug
-    fast-depends
+    fast-depends==3.0.0
 extras=
     yaml
 commands = pytest
@@ -45,7 +45,7 @@ deps =
     boto3
     mypy_boto3_s3
     werkzeug
-    fast-depends
+    fast-depends==3.0.0
 commands = pytest -m pydantic
 
 [testenv:coveralls]