Longarms is a simple tool to recognize multitouch taps (3-finger taps, 4-finger taps, and 5-finger taps where supported) using evdev.
Longarms looks for config files in $HOME/.config/longarms. Refer to longarms.yaml.example for options. You can run sudo evtest to find the path to your touchpad.
Installation is possible using our .deb files on our releases page.
There's multiple options to install with other distros, you could simply run go install if you have a Go environment setup. Otherwise you can add the binary from our tar.gz packages on our releases page into a folder in your PATH.