anchor.diff:  
   @rem otherwise we search for a suitable Python interpreter
   :find_python
  -
   @rem First check the existence of the "py" launcher (available in Python 3)
   @rem if we have it, check if we have a py -3 installed with the good version or a py 2.7
   @rem if not, check if we have an old py 2.7
  
positive.code: echo usage: configure [options] [path/to/config/directory]
  echo.
  echo The options and arguments are:
  echo  [path/to/config/directory] : this optionally sets the path to a
  echo    configuration directory to use. Defaults to etc/conf/dev if not set
  echo.
  echo  --clean : this is exclusive of anything else and cleans the environment
  echo    from built and installed files
  echo.
  
negative.code: 
  :activate
  @rem Activate the virtualenv
  if exist "%CFG_ROOT_DIR%tmp\Scripts\activate" (
      "%CFG_ROOT_DIR%tmp\Scripts\activate"
  )
  