old_contents: import warnings
  
  from signac import *
  
  msg = "compdb was renamed to signac. Please import signac in the future."
  warnings.warn(DeprecationWarning, msg)
  
new_contents: import warnings
  
  from signac import *
  __all__ = ['core', 'contrib', 'db']
  
  msg = "compdb was renamed to signac. Please import signac in the future."
  print('Warning!',msg)
  warnings.warn(msg, DeprecationWarning)
  
subject: Add surrogate compdb package, linking to signac.