pprProblem :: Problem -> String
pprProblem (DuplicateFile fp) = "Duplicate file: " ++ show fp
pprProblem (ExtraFile fp) = "Extra file: " ++ show fp
pprProblem :: Problem -> String
pprProblem (DuplicateFile fp) = "Duplicate file: " ++ show fp
pprProblem (ExtraFile fp) = "Extra file: " ++ show fp