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:static/
            supplies   step:./plan.py
            supplies   step:cat static/foo.txt

step:./plan.py
             workdir = ./
             command = ./plan.py
               state = SUCCEEDED
       extended hash = yes
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   dg:'static/**'
             creates   step:cat static/foo.txt

dg:'static/**'
          created by   step:./plan.py
             creates   file:static/
             creates   file:static/foo.txt

step:cat static/foo.txt
             workdir = ./
             command = cat static/foo.txt
               state = SUCCEEDED
       extended hash = yes
          created by   step:./plan.py
            consumes   file:./
            consumes   file:static/foo.txt

file:static/foo.txt
                path = static/foo.txt
               state = STATIC
          created by   dg:'static/**'
            consumes   file:static/
            supplies   step:cat static/foo.txt

file:static/
                path = static/
               state = STATIC
          created by   dg:'static/**'
            consumes   file:./
            supplies   file:static/foo.txt
