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

file:./
               state = STATIC
          created by   root:
            supplies   file:demovars.py
            supplies   file:output.txt
            supplies   file:plan.py
            supplies   step:./demovars.py > output.txt
            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:demovars.py
             creates   step:./demovars.py > output.txt

file:demovars.py
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:./demovars.py > output.txt

step:./demovars.py > output.txt
               state = SUCCEEDED
             env_var = ENV_VAR_TEST_STEPUP_SDASFD [amended]
           explained = yes
          created by   step:./plan.py
            consumes   file:./
            consumes   file:demovars.py
             creates   file:output.txt
            supplies   file:output.txt

file:output.txt
               state = BUILT
          created by   step:./demovars.py > output.txt
            consumes   file:./
            consumes   step:./demovars.py > output.txt
