$ ccwl compile hello-world.scm > hello-world.cwl
$ cwltool hello-world.cwl --message "Hello World!"
[workflow ] start
[workflow ] starting step echo
[step echo] start
[job echo] /tmp/zprgn3x0$ echo \
    'Hello World!'
Hello World!
[job echo] completed success
[step echo] completed success
[workflow ] completed success
{}
Final process status is success