If I catch the errors in the apm_callback procs for upgrade (e.g. in the after_upgrade callback) and want to show the user a friendlier error message than the default one, how would I go about it?
Sending the user_message failed, now we will try to use an nsv and query it in install-4.tcl to display it to the user.
Logging into the error log works absolutely fine by the way.
