Qt4 was removed from the default Ubuntu 17.10 ISO this week as a result of dropping fcitx support there. It looks like the only reason Qt5 is still there is because ibus-mozc recommends mozc-utils-gui which depends on Qt5. mozc is a Japanese input method but we do not pre-install Japanese language packs in the live environment.
mozc was added to the live environment just before Ubuntu 15.10 was released: https://bazaar.launchpad.net/~ubuntu-core-dev/ubuntu-seeds/ubuntu.artful/revision/2363 To use the mozc input method, I had to install ibus-mozc and then log out of GNOME and log back in for it to show up in GNOME Settings > Region & Language > Input Sources > + > … > Other > Japanese (Mozc) . Since I have more than one input method/keyboard now, a language menu shows up in the right side of the top bar. That menu allows switching between 6 different mozc modes. gnome-control-center does not provide any other mozc preferences. mozc-utils-gui adds a "Mozc Setup" app. This app has a low-resolution icon which doesn't look as good when people are browsing the list of installed apps in the live environment. mozc-utils-gui allowing customizing a lot of apparently useful mozc preferences. Here are some follow-up questions: 1. Does it make sense to have ibus-mozc in the live environment but without mozc-utils-gui? 2. It's hard for me to tell but mozc-utils-gui is possibly the only thing keeping Qt in Ubuntu main. I guess we should consider whether that app is important enough to stay in 'supported' if we do drop it from 'live'. Thanks, Jeremy Bicha -- ubuntu-desktop mailing list ubuntu-desktop@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-desktop