Comment 2 for bug 919802

The relevant code in question is located here: https://projects.kde.org/projects/extragear/sysadmin/libqapt/repository/revisions/master/entry/src/worker/workerinstallprogress.cpp

The addition of a pty is a bit recent, so it may be related to the issue. Unfortunately, I do not know as much about ptys and pipes as I should... You seem to know a lot about it, though, so if you could take a look at the code it would be much appreciated.