A Python script that monitors for keystrokes and automatically dis-/re-enables the touchpad as appropriate. Also controls the Legion RGB keyboard!
Credit for the l5p_kbl library Credit for the legion_laptop kernel module
First, make sure the touchpadDisable.py and l5p_kbl.py files are owned by root and read-only to other users. This is because the script reads directly from /dev/input which could otherwise enable keylogging and event spoofing.
Second, add the following near the bottom of your sudoers file:
ben ALL=(ben:input) NOPASSWD: /home/ben/bin/touchpadDisable.py
Third, configure your window manager to execute the following command on startup:
sudo -g input /home/ben/bin/touchpadDisable.py
Also requires installing the legion_laptop kernel module linked above.
Edit all values as appropriate. Enjoy!