code styling

app/orm.py

@@ -5,7 +5,7 @@ from sqlalchemy import Column, VARCHAR, CHAR, ForeignKey, DATETIME, update, and_
 from sqlalchemy.engine import Engine
 from sqlalchemy.orm import sessionmaker, declarative_base
 
-from util import NV
+from util import DriverMatrix
 
 Base = declarative_base()
 
@@ -25,7 +25,7 @@ class Origin(Base):
         return f'Origin(origin_ref={self.origin_ref}, hostname={self.hostname})'
 
     def serialize(self) -> dict:
-        _ = NV().find(self.guest_driver_version)
+        _ = DriverMatrix().find(self.guest_driver_version)
 
         return {
             'origin_ref': self.origin_ref,