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

file:./
               state = STATIC
          created by   root:
            supplies   file:inner.py
            supplies   file:out.txt
            supplies   file:outer.py
            supplies   file:plan.py
            supplies   step:./inner.py
            supplies   step:./outer.py bar
            supplies   step:./plan.py

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

step:./plan.py
               state = SUCCEEDED
           explained = yes
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:inner.py
             creates   file:outer.py
             creates   step:./outer.py bar

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

file:outer.py
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:./outer.py bar

step:./inner.py
               state = SUCCEEDED
           explained = yes
          created by   step:./outer.py bar
            consumes   file:./
            consumes   file:inner.py
             creates   file:out.txt
            supplies   file:out.txt

file:out.txt
               state = BUILT
          created by   step:./inner.py
            consumes   file:./
            consumes   step:./inner.py

step:./outer.py bar
               state = SUCCEEDED
           explained = yes
          created by   step:./plan.py
            consumes   file:./
            consumes   file:outer.py
             creates   step:./inner.py
