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:FOO-stderr.txt
            supplies   file:FOO-stdout.txt
            supplies   file:FOO.md
            supplies   file:plan.py
            supplies   step:./plan.py
            supplies   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt

step:./plan.py
             workdir = ./
             command = ./plan.py
               state = SUCCEEDED
   env_var (amended) = ENV_VAR_TEST_STEPUP_PREFIX
       extended hash = yes
          created by   root:
            consumes   file:./
            consumes   file:plan.py
             creates   file:FOO.md
             creates   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt

file:FOO.md
                path = FOO.md
               state = STATIC
          created by   step:./plan.py
            consumes   file:./
            supplies   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt

step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
             workdir = ./
             command = grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
               state = SUCCEEDED
             env_var = ENV_VAR_TEST_STEPUP_PREFIX
       extended hash = yes
          created by   step:./plan.py
            consumes   file:./
            consumes   file:FOO.md
             creates   file:FOO-stderr.txt
             creates   file:FOO-stdout.txt
            supplies   file:FOO-stderr.txt
            supplies   file:FOO-stdout.txt

file:FOO-stdout.txt
                path = FOO-stdout.txt
               state = BUILT
          created by   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
            consumes   file:./
            consumes   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt

file:FOO-stderr.txt
                path = FOO-stderr.txt
               state = VOLATILE
          created by   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
            consumes   file:./
            consumes   step:grep variable FOO.md ${ENV_VAR_TEST_STEPUP_PREFIX}.txt > FOO-stdout.txt 2> FOO-stderr.txt
