Taskwarrior and Timewarrior are related, and work together using
on-modify hook script installed for Taskwarrior.
The hook script is installed with Timewarrior. Simply copy it to the Taskwarrior hooks directory, and make it executable:
$ cp ext/on-modify.timewarrior ~/.task/hooks/ $ chmod +x ~/.task/hooks/on-modify.timewarrior
Once the hook is installed, run the Taskwarrior command:
$ task diagnostics ...
This command will show whether the hook script is installed and recognized. You should see something like this:
start a task in Taskwarrior, the hook
script will start time tracking in Timewarrior.
When the task is
stopped, or completed, the hook
script will stop time tracking in Timewarrior.