--pants-subprocessdir=<str>
  PANTS_SUBPROCESSDIR
  pants_subprocessdir
      default: /Users/stuhood/src/pants/.pids
      current value: /Users/stuhood/src/pants/.pids
      The directory to use for tracking subprocess metadata. This should live outside of the dir used
      by `pants_workdir` to allow for tracking subprocesses that outlive the workdir data.

(located via

./pants help

and then

./pants help-advanced global

)