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

file:./
               state = STATIC
          created by   root:
            supplies   file:bar.json
            supplies   file:foo.pickle
            supplies   file:plan.py
            supplies   file:special.py
            supplies   step:runpy ./plan.py
            supplies   step:runpy ./special.py --inp=foo.pickle --out=bar.json

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:foo.pickle
             creates   file:special.py
             creates   step:runpy ./special.py --inp=foo.pickle --out=bar.json
            supplies   file:foo.pickle [amended]

file:special.py
               state = STATIC
          created by   step:runpy ./plan.py
            consumes   file:./
            supplies   step:runpy ./special.py --inp=foo.pickle --out=bar.json

file:foo.pickle
               state = BUILT
          created by   step:runpy ./plan.py
            consumes   file:./
            consumes   step:runpy ./plan.py
            supplies   step:runpy ./special.py --inp=foo.pickle --out=bar.json

step:runpy ./special.py --inp=foo.pickle --out=bar.json
               state = SUCCEEDED
             env_var = STEPUP_PATH_FILTER [amended]
          created by   step:runpy ./plan.py
            consumes   file:./
            consumes   file:foo.pickle
            consumes   file:special.py
             creates   file:bar.json
            supplies   file:bar.json

file:bar.json
               state = BUILT
          created by   step:runpy ./special.py --inp=foo.pickle --out=bar.json
            consumes   file:./
            consumes   step:runpy ./special.py --inp=foo.pickle --out=bar.json
