minimalistic.hs:1:1: Warning: Unused LANGUAGE pragma
Found

{-# LANGUAGE EmptyDataDecls, DeriveGeneric, OverloadedStrings,
  ScopedTypeVariables #-}

Why not

{-# LANGUAGE DeriveGeneric, OverloadedStrings, ScopedTypeVariables
  #-}

minimalistic.hs:42:1: Suggestion: Use camelCase
Found

data Example_DB = Example_DB{exTourneyDB :: HaapTourneyDB ExPlayer}
                deriving (Generic)

Why not

data ExampleDB = ExampleDB{exTourneyDB :: HaapTourneyDB ExPlayer}
               deriving (Generic)

minimalistic.hs:42:1: Suggestion: Use newtype instead of data
Found

data Example_DB = Example_DB{exTourneyDB :: HaapTourneyDB ExPlayer}
                deriving (Generic)

Why not

newtype Example_DB = Example_DB{exTourneyDB ::
                                HaapTourneyDB ExPlayer}
                   deriving (Generic)

Note: decreases laziness

minimalistic.hs:99:29: Warning: Redundant bracket
Found

("*.png")

Why not

"*.png"

minimalistic.hs:102:29: Warning: Redundant bracket
Found

("*.jpg")

Why not

"*.jpg"

minimalistic.hs:105:29: Warning: Redundant bracket
Found

("templates/minimalistic.html")

Why not

"templates/minimalistic.html"

minimalistic.hs:150:75: Warning: Redundant bracket
Found

(exRankSpec)

Why not

exRankSpec

minimalistic.hs:152:1: Suggestion: Use newtype instead of data
Found

data ExPlayer = ExPlayer (String, Bool)
              deriving (Eq, Ord, Show, Generic)

Why not

newtype ExPlayer = ExPlayer (String, Bool)
                 deriving (Eq, Ord, Show, Generic)

Note: decreases laziness

minimalistic.hs:158:5: Warning: Eta reduce
Found

docPrec i x = doc x

Why not

docPrec i = doc

minimalistic.hs:168:87: Warning: Redundant bracket
Found

(return)

Why not

return