As reported by lintian -i:
W: openvswitch source: debhelper-but-no-misc-depends python-openvswitch
N:
N: The source package uses debhelper, but it does not include
N: ${misc:Depends} in the given binary package's debian/control entry. Any
N: debhelper command may add dependencies to ${misc:Depends} that are
N: required for the work that it does, so recommended best practice is to
N: always add ${misc:Depends} to the dependencies of each binary package if
N: debhelper is in use.
N:
N: Refer to the debhelper(7) manual page for details.
N:
N: Severity: normal, Certainty: possible
Package: python-openvswitch
Architecture: all
Section: python
-Depends: ${python:Depends}
+Depends: ${misc:Depends}, ${python:Depends}
Provides: ${python:Provides}
Description: Python bindings for Open vSwitch
This package contains the full Python bindings for Open vSwitch database.