:1:1: Not in scope: `nubBy' :1:1: Not in scope: `nub' :1:1: Not in scope: `nubBy' :1:1: Not in scope: `nub' :1:1: Not in scope: `nub' Perhaps you meant `L.nub' (imported from Data.List) :1:1: Failed to load interface for `L' Use -v to see a list of the files searched for. :1:1: Failed to load interface for `L' Use -v to see a list of the files searched for. :1:1: Not in scope: `nub'