+# slow down ploopy trackball, until we recompile firmware
+id=$(xinput list | grep -F 'Ploopy Corporation Trackball Mouse' | sed -rn 's/.*[[:space:]]id=([^[:space:]]*).*/\1/p' ||:)
+if [[ $id ]]; then
+ xinput --set-prop 'libinput Accel Speed' -0.9
+fi