##? envsubst - fall-back wrapper in the event the envsubst command does not exist.

if (( ! $+commands[envsubst] )); then
  function envsubst {
    command envsubst "$@"
  }
else
  function envsubst {
    python -c 'import os,sys;[sys.stdout.write(os.path.expandvars(l)) for l in sys.stdin]'
  }
fi

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