When a new inheriting view is imported during a module
installation, it is validated thanks to the _constraints
on the ir.ui.view model. However the validation uses
a rather convoluted system for validating the whole
view tree at once (root view + all inherited changes)
while only taking into account the views that belong
to modules that are currently loaded.
This complicated system is necessary to be able to
operate on-the-fly at any point during the registry
loading/initialization.
Now because _constraints are checked during create()
this particular validation happens *before* the
external ID (ir.model.data entry) of that new view
can be created (it obviously needs to wait until
the view record is inserted). As a consequence the
view validation cannot determine the module to
which that new view belongs, and was erroneously
ignoring it.
Changing the view filtering to also include views
from unknown modules fixes this transient problem,
and also means that manually created inherited
views will be validated during module init too.
bzr revid: odo@openerp.com-20130703215704-x732bepiifvf4g3n
eae2321cd2