Bug 2539584

On Fedora 44 KDE Plasma (Wayland), users whose locale is in _xcompose_language_list (am_ET, el_GR, fi_FI, pt_BR, ru_RU) get QT_IM_MODULE=xim exported into the session by /etc/xdg/plasma-workspace/env/xinput.sh (imsettings-plasma). Qt/KDE applications then use XIM instead of the Wayland text-input protocol, so the Plasma virtual keyboard (plasma-keyboard) never appears in Qt/KDE applications. It still works in non-Qt applications (Chromium, Flatpaks).

Other locales are not affected: they get none.conf, which has IMSETTINGS_IGNORE_ME=yes and IMSETTINGS_IGNORE_SESSION=*-wayland,GNOME (added for bug 2240722), so setup_qt_immodule unsets QT_IM_MODULE. xcompose.conf lacks these lines, so the xcompose locales still get "xim".

Versions:
imsettings-1.8.11-2.fc44
imsettings-plasma-1.8.11-2.fc44
plasma-workspace-6.7.5-1.fc44
kwin-6.7.5-1.fc44
plasma-keyboard-6.7.5-1.fc44
Rawhide (1.8.11-3) has the same xcompose.conf.

Reproducible: Always

Steps to Reproduce:
1. On Fedora 44 KDE Plasma, set the system locale to ru_RU.UTF-8 (or fi_FI, pt_BR, el_GR, am_ET).
2. Log in to a Plasma Wayland session.
3. Run: systemctl --user show-environment | grep QT_IM_MODULE
4. Enable the virtual keyboard (System Settings > Keyboard > Virtual Keyboard) and tap a text field in a Qt/KDE app (Dolphin, System Settings).
Actual Results:
3. QT_IM_MODULE=xim
4. The virtual keyboard does not appear in Qt/KDE applications.

Expected Results:
3. QT_IM_MODULE is not set, as with en_US and other none.conf locales.
4. The virtual keyboard appears in Qt/KDE applications.

Additional Information:
Result of the xinput.sh logic in a Plasma Wayland session with IMSETTINGS_DISABLE_USER_XINPUTRC=yes and different LANG values:
  ru_RU, fi_FI, pt_BR, el_GR -> QT_IM_MODULE=xim
  en_US, de_DE, fr_FR, uk_UA, es_ES, pt_PT, ja_JP, zh_CN -> unset

none.conf ends with:
  IMSETTINGS_IGNORE_ME=yes
  # We don't take care of Wayland
  IMSETTINGS_IGNORE_SESSION=*-wayland,GNOME
xcompose.conf has no such lines.

Suggested fix: add the same two lines to /etc/X11/xinit/xinput.d/xcompose.conf:
  IMSETTINGS_IGNORE_ME=yes
  IMSETTINGS_IGNORE_SESSION=*-wayland,GNOME

Related: the 1.8.11-2 changelog says "Disable imsettings for KDE", but Patch5 (imsettings-disable-kde.patch) is inside %if 0%{?rhel} in imsettings.spec and is not in the Fedora SRPM. On Fedora 44 /usr/libexec/imsettings-target-checker.sh has no kde* case and "imsettings-check --check-desktop KDE" returns 0, so KDE sessions are still handled by imsettings. Applying that patch on Fedora would also fix this.
See also bug 2240722 and bug 2232064.

Workaround:
  mkdir -p ~/.config/imsettings
  echo 'XIM=none' > ~/.config/imsettings/xinputrc
then log out and back in.