$ ccwl compile pass-stdin.scm > pass-stdin.cwl
$ cwltool pass-stdin.cwl --file foo
     [workflow ] start
     [workflow ] starting step count-bytes
     [step count-bytes] start
     [job count-bytes] /tmp/wxi6_9jz$ wc \
    -c < /tmp/siden6hu/stg51eaae41-52a5-4e69-a78e-caefd84f7af5/foo
37
     [job count-bytes] completed success
     [step count-bytes] completed success
     [workflow ] completed success
{}
     Final process status is success