
Prior to Qt 5.9.2, there is a QML cache invalidation bug which causes SDDM to segfault when upgrading Plasma. See also: https://bugreports.qt.io/browse/QTBUG-62302
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.