root:
             version = v1
             creates   file:../
             creates   file:../../
             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:../
            supplies   file:plan.py
            supplies   step:./plan.py
            supplies   step:mkdir -p ../public/

step:./plan.py
             workdir = ./
             command = ./plan.py
               state = SUCCEEDED
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:../../common/
             creates   file:../../common/script.py
             creates   step:./script.py  # wd=../../common/
             creates   step:mkdir -p ../public/

file:../../common/
                path = ../../common/
               state = STATIC
          created by   step:./plan.py
            consumes   file:../../
            supplies   file:../../common/script.py
            supplies   step:./script.py  # wd=../../common/

file:../../
                path = ../../
               state = STATIC
          created by   root:
            consumes   file:../
            supplies   file:../../common/

file:../
                path = ../
               state = STATIC
          created by   root:
            consumes   file:./
            supplies   file:../../
            supplies   file:../public/
            supplies   step:mkdir -p ../public/

file:../../common/script.py
                path = ../../common/script.py
               state = STATIC
          created by   step:./plan.py
            consumes   file:../../common/

step:mkdir -p ../public/
             workdir = ./
             command = mkdir -p ../public/
               state = SUCCEEDED
          created by   step:./plan.py
            consumes   file:../
            consumes   file:./
             creates   file:../public/
            supplies   file:../public/

file:../public/
                path = ../public/
               state = BUILT
          created by   step:mkdir -p ../public/
            consumes   file:../
            consumes   step:mkdir -p ../public/
            supplies   file:../public/foo.txt
            supplies   step:./script.py  # wd=../../common/

step:./script.py  # wd=../../common/
             workdir = ../../common/
             command = ./script.py
               state = SUCCEEDED
  consumes (amended) = file:../public/
  supplies (amended) = file:../public/foo.txt
          created by   step:./plan.py
            consumes   file:../../common/
            consumes   file:../public/
             creates   file:../public/foo.txt
            supplies   file:../public/foo.txt

file:../public/foo.txt
                path = ../public/foo.txt
               state = BUILT
          created by   step:./script.py  # wd=../../common/
            consumes   file:../public/
            consumes   step:./script.py  # wd=../../common/
