emptySpireR = SpireR { ctx = Empty
                     , env = []
                     , conf = error "You need to define 'conf' before using 'emptySpireR'."
                     }
emptySpireR = SpireR { ctx = Empty
                     , env = []
                     , conf = error "You need to define 'conf' before using 'emptySpireR'."
                     }
emptySpireR = SpireR { ctx = Empty
                     , env = []
                     , conf = error "You need to define 'conf' before using 'emptySpireR'."
                     }