old_contents: import os
  import sys
  
  import pytest
  
  
  # This is a hack to fix path problems because "borg" (the package) is in the source root.
  # When importing the conftest an "import borg" can incorrectly import the borg from the
  # source root instead of the one installed in the environment.
  # The workaround is to remove entries pointing there from the path and check whether "borg"
  # is still importable. If it is not, then it has not been installed in the environment
  # and the entries are put back.
  #
  # TODO: After moving the package to src/: remove this.
  
  original_path = list(sys.path)
  for entry in original_path:
      if entry == '' or entry.endswith('/borg'):
          sys.path.remove(entry)
  
  try:
      import borg
  except ImportError:
      sys.path = original_path
  
  
  @pytest.fixture(autouse=True)
  def clean_env(tmpdir_factory, monkeypatch):
      # avoid that we access / modify the user's normal .config / .cache directory:
      monkeypatch.setenv('XDG_CONFIG_HOME', tmpdir_factory.mktemp('xdg-config-home'))
      monkeypatch.setenv('XDG_CACHE_HOME', tmpdir_factory.mktemp('xdg-cache-home'))
      # also avoid to use anything from the outside environment:
      keys = [key for key in os.environ if key.startswith('BORG_')]
      for key in keys:
          monkeypatch.delenv(key, raising=False)
  
new_contents: import os
  import os.path
  import sys
  
  import pytest
  
  
  # This is a hack to fix path problems because "borg" (the package) is in the source root.
  # When importing the conftest an "import borg" can incorrectly import the borg from the
  # source root instead of the one installed in the environment.
  # The workaround is to remove entries pointing there from the path and check whether "borg"
  # is still importable. If it is not, then it has not been installed in the environment
  # and the entries are put back.
  
  original_path = list(sys.path)
  for entry in original_path:
      if entry == '' or entry == os.path.dirname(__file__):
          sys.path.remove(entry)
  
  try:
      import borg
  except ImportError:
      sys.path = original_path
  
  
  @pytest.fixture(autouse=True)
  def clean_env(tmpdir_factory, monkeypatch):
      # avoid that we access / modify the user's normal .config / .cache directory:
      monkeypatch.setenv('XDG_CONFIG_HOME', tmpdir_factory.mktemp('xdg-config-home'))
      monkeypatch.setenv('XDG_CACHE_HOME', tmpdir_factory.mktemp('xdg-cache-home'))
      # also avoid to use anything from the outside environment:
      keys = [key for key in os.environ if key.startswith('BORG_')]
      for key in keys:
          monkeypatch.delenv(key, raising=False)
  
subject: fix tox build for environment-python != containing-python in yet-another instance