installer: call ElementTree.Element with explicit attrib parameter

Type checkers today are unable to determine that `defn` does not contain
an `attrib` member, this prevents them from checking our dict would
provide compatible data (which is does not).

Signed-off-by: Yann Dirson <[email protected]>

Author: ydirson

lib/installer.py

@@ -67,7 +67,7 @@ def _defn_to_xml_et(defn, /, *, parent=None):
         assert isinstance(name, str)
         contents = defn.pop('CONTENTS', ())
         assert isinstance(contents, (str, list))
-        element = ET.Element(name, **defn)
+        element = ET.Element(name, {}, **defn)
         if parent is not None:
             parent.append(element)
         if isinstance(contents, str):