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

file:./
               state = STATIC
          created by   root:
            supplies   file:final.txt
            supplies   file:plan.py
            supplies   file:second.txt
            supplies   step:./plan.py
            supplies   step:cp second.txt final.txt
            supplies   step:echo "test 2" > second.txt

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

step:./plan.py
               state = SUCCEEDED
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   step:cp second.txt final.txt
             creates   step:echo "test 2" > second.txt

file:final.txt
               state = BUILT
          created by   step:cp second.txt final.txt
            consumes   file:./
            consumes   step:cp second.txt final.txt

step:echo "test 2" > second.txt
               state = SUCCEEDED
          created by   step:./plan.py
            consumes   file:./
             creates   file:second.txt
            supplies   file:second.txt

file:second.txt
               state = BUILT
          created by   step:echo "test 2" > second.txt
            consumes   file:./
            consumes   step:echo "test 2" > second.txt
            supplies   step:cp second.txt final.txt

step:cp second.txt final.txt
               state = SUCCEEDED
          created by   step:./plan.py
            consumes   file:./
            consumes   file:second.txt
             creates   file:final.txt
            supplies   file:final.txt
