pypeline.Model: make deserialize to static

Change the `Model.deserialize` to a static function, which will return
a new instance of the Model.

python/revng/pypeline/cli/pipeline/run_analysis.py

@@ -131,9 +131,8 @@ def build_run_analysis_command(
             name=analysis_name,
         )
         # Load the model
-        loaded_model: Model = model_ty()
         with open(model, "rb") as model_file:
-            loaded_model.deserialize(model_file.read())
+            loaded_model = model_ty.deserialize(model_file.read())
 
         logger.debug("Model loaded: `%s`", loaded_model)
 

python/revng/pypeline/cli/pipeline/run_pipe.py

@@ -154,9 +154,8 @@ def build_pipe_command(
             static_configuration=static_configuration,
         )
         # Load the model
-        loaded_model: Model = model_ty()
         with open(model, "rb") as model_file:
-            loaded_model.deserialize(model_file.read())
+            loaded_model = model_ty.deserialize(model_file.read())
         # Load the containers with args form the command line
         containers = []
         for arg in pipe.arguments:

python/revng/pypeline/cli/project/analyze.py

@@ -117,8 +117,7 @@ def build_analysis_command(
 
         # Load the model
         storage_provider = storage_provider_factory(model_path=model)
-        loaded_model: Model = model_ty()
-        loaded_model.deserialize(storage_provider.get_model())
+        loaded_model = model_ty.deserialize(storage_provider.get_model())
 
         logger.debug("Model loaded: `%s`", loaded_model)
 

python/revng/pypeline/cli/project/artifact.py

@@ -128,8 +128,7 @@ def build_artifact_command(
 
         # Load the model
         storage_provider = storage_provider_factory(model_path=model)
-        loaded_model: Model = model_ty()
-        loaded_model.deserialize(storage_provider.get_model())
+        loaded_model = model_ty.deserialize(storage_provider.get_model())
 
         logger.debug("Model loaded: `%s`", loaded_model)
 

python/revng/pypeline/model.py

@@ -103,8 +103,9 @@ class Model(ABC):
     def serialize(self) -> bytes:
         pass
 
+    @classmethod
     @abstractmethod
-    def deserialize(self, data: bytes):
+    def deserialize(cls, data: bytes) -> Model:
         pass
 
     @classmethod