Re: wrong type of agument... where ?

[Danny Milosavljevic]

Is the tryton test using marionette-operating-system ?

marionette-shepherd-service seems to already try to remote-control the system - 
but it seems that this case has not been handled?

Check out marionette-shepherd-service in gnu/tests.scm for the general 
mechanism.  Maybe add some (display "XXX") in there in order to find out where 
it goes off the deep end.