root:
             creates   file:./
             creates   file:plan.py
             creates   step:runpy ./plan.py

file:./
               state = STATIC
          created by   root:
            supplies   file:line.txt
            supplies   file:log.txt
            supplies   file:plan.py
            supplies   step:runpy ./plan.py
            supplies   step:runsh cat line.txt >> log.txt; exit 1

file:plan.py
               state = STATIC
          created by   root:
            consumes   file:./
            supplies   step:runpy ./plan.py

step:runpy ./plan.py
               state = SUCCEEDED
             env_var = STEPUP_PATH_FILTER [amended]
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:line.txt
             creates   step:runsh cat line.txt >> log.txt; exit 1

file:line.txt
               state = STATIC
          created by   step:runpy ./plan.py
            consumes   file:./
            supplies   step:runsh cat line.txt >> log.txt; exit 1

step:runsh cat line.txt >> log.txt; exit 1
               state = FAILED
          created by   step:runpy ./plan.py
            consumes   file:./
            consumes   file:line.txt
             creates   file:log.txt
            supplies   file:log.txt

file:log.txt
               state = OUTDATED
          created by   step:runsh cat line.txt >> log.txt; exit 1
            consumes   file:./
            consumes   step:runsh cat line.txt >> log.txt; exit 1
