[debian] initial Debian package management support

tests/__init__.py

@@ -0,0 +1,10 @@
+
+class AnyInstance(object):
+    def __init__(self, instance_class: type):
+        self._class = instance_class
+
+    def __eq__(self, other):
+        return other is not None and isinstance(other, self._class)
+
+    def __repr__(self):
+        return f'<ANY_{self._class.__name__}>'