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

file:./
               state = STATIC
          created by   root:
            supplies   file:first.txt
            supplies   file:helper.py
            supplies   file:plan.py
            supplies   file:second.txt
            supplies   file:work.py
            supplies   step:./plan.py
            supplies   step:./work.py plan
            supplies   step:./work.py run -- first
            supplies   step:./work.py run -- second

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   file:helper.py
             creates   file:work.py
             creates   step:./work.py plan

file:helper.py
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:./work.py run -- first
            supplies   step:./work.py run -- second

file:work.py
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:./work.py plan
            supplies   step:./work.py run -- first
            supplies   step:./work.py run -- second

step:./work.py plan
               state = SUCCEEDED
          created by   step:./plan.py
            consumes   file:./
            consumes   file:work.py
             creates   step:./work.py run -- first
             creates   step:./work.py run -- second

step:./work.py run -- first
               state = SUCCEEDED
          created by   step:./work.py plan
            consumes   file:./
            consumes   file:helper.py [amended]
            consumes   file:work.py
             creates   file:first.txt
            supplies   file:first.txt

file:first.txt
               state = BUILT
          created by   step:./work.py run -- first
            consumes   file:./
            consumes   step:./work.py run -- first

step:./work.py run -- second
               state = SUCCEEDED
          created by   step:./work.py plan
            consumes   file:./
            consumes   file:helper.py [amended]
            consumes   file:work.py
             creates   file:second.txt
            supplies   file:second.txt

file:second.txt
               state = BUILT
          created by   step:./work.py run -- second
            consumes   file:./
            consumes   step:./work.py run -- second
