The X.Org libinput driver
The X.Org libinput driver is a thin wrapper around libinput and allows for libinput to be used for input devices in X. This driver can be used as as drop-in replacement for evdev and synaptics. Simply build and install in your $PREFIX, then install the config file in /etc/X11/xorg.conf.d/. Restart X and the libinput driver will take over your devices.