xml parse error is vital

inary/operations/emerge.py

@@ -157,7 +157,6 @@ def plan_emerge(A):
 
     order_build = G_f.topological_sort()
     order_build.reverse()
-
     order_inst = inary.operations.install.plan_install_pkg_names(install_list)
 
     return order_inst, order_build

inary/sxml/autoxml.py

@@ -712,8 +712,7 @@ class autoxml(oo.autosuper, oo.autoprop):
                 return value
             else:
                 if req == mandatory:
-                    errs.append(
-                        where + ': ' + _('Mandatory token {} not available.').format(token))
+                    raise Exception(_('Mandatory token {} not available.').format(token)+"\n  {}".format(where))
                 return None
 
         def encode(node, value, errs):
@@ -722,9 +721,7 @@ class autoxml(oo.autosuper, oo.autoprop):
                 writetext(node, token, str(value))
             else:
                 if req == mandatory:
-                    errs.append(
-                        _('Mandatory token {} not available.').format(token))
-
+                    raise Exception(_('Mandatory token {} not available.').format(token)+"\n  {}".format(value))
         def errors(value, where):
             errs = []
             if value and not isinstance(value, token_type):