When I am trying to start kitty, from xterm it fails with messege from libGL:

libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
[222 02:19:16.087431] [glfw error 65543]: GLX: Failed to create context: GLXBadFBConfig
[222 02:19:16.087450] Failed to create GLFW temp window!

the same problem with other openGL based programs (such as Xonotic). WM still works, I have not restarted it from last system upgrade.

It pacman.log I found two errors with libicuuc:

[2018-08-09 22:12] [ALPM-SCRIPTLET] g_module_open() failed for /usr/lib/gdk-pixbuf-2.0/2.10.0/loaders/libpixbufloader-svg.so: libicuuc.so.62: cannot open shared object file: No such file or directory
[2018-08-09 22:12] [ALPM-SCRIPTLET] /usr/bin/update-mime-database: error while loading shared libraries: libicuuc.so.62: cannot open shared object file: No such file or directory

Full todays pacman.log in attachment. Also I have

 IgnorePkg = icu