root:
             version = v1
             creates   file:./
             creates   file:plan.py
             creates   step:./plan.py

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

file:./
                path = ./
               state = STATIC
          created by   root:
            supplies   file:plan.py
            supplies   (file:sub/)
            supplies   step:./plan.py
            supplies   step:echo hello > sub/dir/nested/hello.txt

step:./plan.py
             workdir = ./
             command = ./plan.py
               state = SUCCEEDED
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   step:echo hello > sub/dir/nested/hello.txt

step:echo hello > sub/dir/nested/hello.txt
             workdir = ./
             command = echo hello > sub/dir/nested/hello.txt
               state = PENDING
          created by   step:./plan.py
            consumes   file:./
            consumes   (file:sub/dir/nested/)
             creates   file:sub/dir/nested/hello.txt
            supplies   file:sub/dir/nested/hello.txt

(file:sub/dir/nested/)
                path = sub/dir/nested/
               state = PENDING
            consumes   (file:sub/dir/)
            supplies   file:sub/dir/nested/hello.txt
            supplies   step:echo hello > sub/dir/nested/hello.txt

(file:sub/dir/)
                path = sub/dir/
               state = PENDING
            consumes   (file:sub/)
            supplies   (file:sub/dir/nested/)

(file:sub/)
                path = sub/
               state = PENDING
            consumes   file:./
            supplies   (file:sub/dir/)

file:sub/dir/nested/hello.txt
                path = sub/dir/nested/hello.txt
               state = PENDING
          created by   step:echo hello > sub/dir/nested/hello.txt
            consumes   (file:sub/dir/nested/)
            consumes   step:echo hello > sub/dir/nested/hello.txt
