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

file:./
               state = STATIC
          created by   root:
            supplies   file:../
            supplies   file:plan.py
            supplies   file:www/
            supplies   step:mkdir ../public/
            supplies   step:mkdir ../public/www/
            supplies   step:runpy ./plan.py

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

step:runpy ./plan.py
               state = SUCCEEDED
             env_var = PUBLIC [amended]
                     = STEPUP_PATH_FILTER [amended]
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:www/
             creates   file:www/plan.py
             creates   step:mkdir ../public/
             creates   step:mkdir ../public/www/
             creates   step:runpy ./plan.py  # wd=www/

file:www/
               state = STATIC
          created by   step:runpy ./plan.py
            consumes   file:./
            supplies   file:www/index.md
            supplies   file:www/plan.py
            supplies   step:copy index.md ../../public/www/index.md  # wd=www/
            supplies   step:runpy ./plan.py  # wd=www/

file:www/plan.py
               state = STATIC
          created by   step:runpy ./plan.py
            consumes   file:www/
            supplies   step:runpy ./plan.py  # wd=www/

step:mkdir ../public/
               state = SUCCEEDED
          created by   step:runpy ./plan.py
            consumes   file:../
            consumes   file:./
             creates   file:../public/
            supplies   file:../public/

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

file:../public/
               state = BUILT
          created by   step:mkdir ../public/
            consumes   file:../
            consumes   step:mkdir ../public/
            supplies   file:../public/www/
            supplies   step:mkdir ../public/www/

step:mkdir ../public/www/
               state = SUCCEEDED
          created by   step:runpy ./plan.py
            consumes   file:../public/
            consumes   file:./
             creates   file:../public/www/
            supplies   file:../public/www/

file:../public/www/
               state = BUILT
          created by   step:mkdir ../public/www/
            consumes   file:../public/
            consumes   step:mkdir ../public/www/
            supplies   file:../public/www/index.md
            supplies   step:copy index.md ../../public/www/index.md  # wd=www/

step:runpy ./plan.py  # wd=www/
               state = SUCCEEDED
             env_var = HERE [amended]
                     = PUBLIC [amended]
                     = ROOT [amended]
                     = STEPUP_PATH_FILTER [amended]
          created by   step:runpy ./plan.py
            consumes   file:www/
            consumes   file:www/plan.py
             creates   file:www/index.md
             creates   step:copy index.md ../../public/www/index.md  # wd=www/

file:www/index.md
               state = STATIC
          created by   step:runpy ./plan.py  # wd=www/
            consumes   file:www/
            supplies   step:copy index.md ../../public/www/index.md  # wd=www/

step:copy index.md ../../public/www/index.md  # wd=www/
               state = SUCCEEDED
          created by   step:runpy ./plan.py  # wd=www/
            consumes   file:../public/www/
            consumes   file:www/
            consumes   file:www/index.md
             creates   file:../public/www/index.md
            supplies   file:../public/www/index.md

file:../public/www/index.md
               state = BUILT
          created by   step:copy index.md ../../public/www/index.md  # wd=www/
            consumes   file:../public/www/
            consumes   step:copy index.md ../../public/www/index.md  # wd=www/
