old_contents: from farmfs.volume import mkfs as make_volume
  from farmfs.volume import FarmFSVolume
  from farmfs.fs import Path
  from farmfs.keydb import KeyDBWindow
  from farmfs.util import take, ingest
  try:
      from os import getcwdu
      getcwd_utf = lambda : ingest(getcwdu())
  except ImportError:
      from os import getcwdb
      getcwd_utf = lambda : ingest(getcwdb())
  try:
      from itertools import imap
  except ImportError:
      # On python3 map is lazy.
      imap = map
  try:
      from itertools import ifilter
  except ImportError:
      ifilter = filter
  
  cwd = Path(getcwd_utf())
  
  def _find_root_path(path):
    candidates = imap(lambda x: x.join(".farmfs"), path.parents())
    matches = ifilter(lambda x: x.isdir(), candidates)
    root = next(take(1)(matches), None)
    if root:
      nested_root = next(take(1)(matches), None)
      if nested_root:
        raise ValueError("Farmfs volumes cannot be nested")
      return root.parent()
    else:
     raise ValueError("Volume not found: %s" % path)
  
  def getvol(path):
    root = _find_root_path(path)
    vol = FarmFSVolume(root)
    return vol
  
  
new_contents: from farmfs.volume import FarmFSVolume
  from farmfs.fs import Path
  from farmfs.util import take, ingest
  try:
      from os import getcwdu
      getcwd_utf = lambda : ingest(getcwdu())
  except ImportError:
      from os import getcwdb
      getcwd_utf = lambda : ingest(getcwdb())
  try:
      from itertools import imap
  except ImportError:
      # On python3 map is lazy.
      imap = map
  try:
      from itertools import ifilter
  except ImportError:
      ifilter = filter
  
  cwd = Path(getcwd_utf())
  
  def _find_root_path(path):
    candidates = imap(lambda x: x.join(".farmfs"), path.parents())
    matches = ifilter(lambda x: x.isdir(), candidates)
    root = next(take(1)(matches), None)
    if root:
      nested_root = next(take(1)(matches), None)
      if nested_root:
        raise ValueError("Farmfs volumes cannot be nested")
      return root.parent()
    else:
     raise ValueError("Volume not found: %s" % path)
  
  def getvol(path):
    root = _find_root_path(path)
    vol = FarmFSVolume(root)
    return vol
  
  
subject: remove unused values in __init__