Options are assumed to be lists

[markfinal]

Opening the Conan Center openssl/1.x recipe causes this exception:

Traceback (most recent call last):
  File "/Users/mark/dev/cruiz/cruiz-dev/cruiz/mainwindow.py", line 435, in load_recipe
    recipe_widget.post_init()
  File "/Users/mark/dev/cruiz/cruiz-dev/cruiz/recipe/recipewidget.py", line 344, in post_init
    self._load_configuration_dock(attributes)
  File "/Users/mark/dev/cruiz/cruiz-dev/cruiz/recipe/recipewidget.py", line 672, in _load_configuration_dock
    recipe_options = self._get_options_from_recipe(recipe_attributes)
  File "/Users/mark/dev/cruiz/cruiz-dev/cruiz/recipe/recipewidget.py", line 397, in _get_options_from_recipe
    if default_value not in value:
TypeError: 'in <string>' requires string as left operand, not NoneType

because the option is defined as

    "openssldir": "ANY",

and the default option value as

default_options["openssldir"] = None