add xml_marshaller & comment about lxml status

stack/erp5/buildout-py3.cfg

@@ -29,19 +29,14 @@ eggs =
     zope.sendmail
     zope.structuredtext
     Products.CMFCore
-#Products.BTreeFolder2 
-#Products.ExternalMethod 
-#Products.MIMETools 
     Products.PythonScripts 
     Products.SiteErrorLog 
     Products.DCWorkflow
-#Products.StandardCacheManagers 
-#Products.ZCatalog 
-#Record
+    xml_marshaller
+
 Products.DCWorkflow-patches = ${:_profile_base_location_}/../../component/egg-patch/Products.DCWorkflow/workflow_method.patch#7908d849d453a23c321a1a838abddadc
 Products.DCWorkflow-patch-options = -p1
 
-
 [python]
 part = python3
 
@@ -208,4 +203,8 @@ wrapt = 1.11
 typed-ast = 1.4.0
 Products.SiteErrorLog = 5.4
 Products.PythonScripts = 4.12
-Products.DCWorkflow = 2.4.0+SlapOSPatched001
\ No newline at end of file
+Products.DCWorkflow = 2.4.0+SlapOSPatched001
+lxml = 4.4.3 
+# This is the version of lxml building, I copy/paste the 4.6.1 from pip install instead
+# XXX it must be checked later
+xml_marshaller = 1.0.2
\ No newline at end of file