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

file:plan.py
               state = CONFIRMED
             creator   root:
                sink   step:./plan.py

step:./plan.py
               state = SUCCEEDED
                need = PLAN
           using_env = STEPUP_PATH_FILTER [dynamic]
             creator   root:
              source   file:plan.py
             product   file:helper.py
             product   file:settings.py
             product   file:work.py
             product   step:./work.py plan

file:helper.py
               state = CONFIRMED
             creator   step:./plan.py
                sink   step:./work.py plan
                sink   step:./work.py run +0.3
                sink   step:./work.py run -- -1.2

file:settings.py
               state = CONFIRMED
             creator   step:./plan.py
                sink   step:./work.py plan

file:work.py
               state = CONFIRMED
             creator   step:./plan.py
                sink   step:./work.py plan
                sink   step:./work.py run +0.3
                sink   step:./work.py run -- -1.2

step:./work.py plan
               state = SUCCEEDED
                need = PLAN
           using_env = STEPUP_PATH_FILTER [dynamic]
             creator   step:./plan.py
              source   file:helper.py [dynamic]
              source   file:settings.py [dynamic]
              source   file:work.py
             product   step:./work.py run +0.3
             product   step:./work.py run -- -1.2

step:./work.py run +0.3
               state = SUCCEEDED
                need = DEFAULT
           using_env = STEPUP_PATH_FILTER [dynamic]
             creator   step:./work.py plan
              source   file:helper.py [dynamic]
              source   file:work.py
             product   file:data+0.3.txt
                sink   file:data+0.3.txt

file:data+0.3.txt
               state = BUILT
             creator   step:./work.py run +0.3
              source   step:./work.py run +0.3

step:./work.py run -- -1.2
               state = SUCCEEDED
                need = DEFAULT
           using_env = STEPUP_PATH_FILTER [dynamic]
             creator   step:./work.py plan
              source   file:helper.py [dynamic]
              source   file:work.py
             product   file:data-1.2.txt
                sink   file:data-1.2.txt

file:data-1.2.txt
               state = BUILT
             creator   step:./work.py run -- -1.2
              source   step:./work.py run -- -1.2
