Here is my simple script to help me toggle touchpad enable & disable in NixOS running on Thinkpad R61.
~/bin/toggleTouchpadEnableDisable
# Try disabling the libinput device.
d=`xinput list | grep -i touchpad | awk '{for(i=1;i<=NF;i++){ tmp=match($i, /id=[0-9]/); if(tmp){print $i} } }' | awk --field-separator== '{ print $2 }'`
echo 'xinput list'
echo " SynPS/2 Synaptics TouchPad device ID: $d"
# Find the touchpad, in my case it's called "SynPS/2 Synaptics TouchPad", with ID 11.
echo "xinput list-props $d"
de=`xinput list-props $d | grep 'Device Enabled' | awk '{ print $3}' | awk --field-separator=\( '{print $2}' | awk --field-separator=\) '{print $1}'`
ds=`xinput list-props $d | grep 'Device Enabled' | awk '{ print $4}'`
echo " Device Enabled setting ID: $de, Device Enabled status: $ds"
newStatus=0
if [ $ds == 0 ]; then
#echo "Set new status to: $newStatus"
newStatus=1
elif [ $ds == 1 ]; then
#echo "Set new status to: $newStatus"
newStatus=0
fi
# There should be one called 'Device Enabled'; at least mine has.
echo "xinput set-prop $d $de $newStatus"
xinput set-prop $d $de $newStatus
ds2=`xinput list-props $d | grep 'Device Enabled' | awk '{ print $4}'`
echo " Device Enabled setting ID: $de, Device Enabled status: $ds2"
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