Tag: python-depends-but-no-python-helper Severity: error Check: debhelper Explanation: The source package declares a dependency on ${python:Depends} in the given binary package's debian/control entry. However, debian/rules doesn't call any helper that would generate this substitution variable. . The source package probably needs a call to dh_python2 (possibly via the Python2 debhelper add-on) in the debian/rules file.