old_contents: from ._version import get_versions
  __version__ = get_versions()['version']
  del get_versions
  
new_contents: from ._version import get_versions
  __version__ = get_versions()['version']
  del get_versions
  
  # The following assumes versioneer was configured with the "pep440-pre" style
  # in setup.cfg
  __conda_version__, __conda_build__ = __version__.split('.dev')
  if __conda_build__ == "":
      __conda_build__ = '0'
  
subject: add __conda_{version,build}__ vars