The new one uses the pam module and looks much nicer.
This is a simple but functional lockscreen that follows the system color scheme. The only authentication method it supports is a password.
You can run the lockscreen with quickshell -p shell.qml.
quickshell -p shell.qml
You can run the lockscreen in test mode (as a window) with quickshell -p test.qml.
quickshell -p test.qml