For our Windows XP installation it is required to duplicate (CopyFile) a file before the MsiProcessDrivers action which becomes sequenced automatically by the Difxapp extension.
Unfortunately the "difx:Driver/@Sequence" attribute does not control the sequencing (position) in the InstallExecuteSequence table.
Thus a new element is required for the difx:Driver element of the Difxapp extension in order to be able to control the sequence position of the MsiProcessDrivers action in the InstallExecuteSequence table:
I suggest difx:Driver/InstallExecuteSequence with the following attributes in accordance with the Custom Element:
I do not believe that @OnExit or @Overridable would make sense in this context, but maybe there is a use case.
I would appreciate if this feature would be realized with 3.6.