small cleanup suggested by @begriffs

postgrest.cabal

@@ -61,8 +61,7 @@ library
   if flag(ci)
     ghc-options:       -Wall -W -Werror
   else
-    -- ghc-options:       -Wall -W -O2
+    ghc-options:       -Wall -W -O2
-    ghc-options:       -Wall -W
 
   default-language:    Haskell2010
   default-extensions:  OverloadedStrings, ScopedTypeVariables, QuasiQuotes

src/PostgREST/App.hs

@@ -1,4 +1,5 @@
 {-# LANGUAGE FlexibleContexts    #-}
+{-# LANGUAGE ScopedTypeVariables #-}
 module PostgREST.App (
   app
 , sqlError
@@ -10,33 +11,34 @@ module PostgREST.App (
 ) where
 
 
-import Control.Monad (join)
+import qualified Blaze.ByteString.Builder  as BB
-import Control.Arrow ((***), second)
 import           Control.Applicative
+import           Control.Arrow             (second, (***))
+import           Control.Monad             (join)
 import           Data.Bifunctor            (first)
-import Data.Text (Text, pack)
+import qualified Data.ByteString.Char8     as BS
-import Data.Maybe (fromMaybe, mapMaybe, isJust, isNothing)
+import qualified Data.ByteString.Lazy      as BL
-import Text.Regex.TDFA ((=~))
+import           Data.CaseInsensitive      (original)
+import qualified Data.Csv                  as CSV
+import           Data.Functor.Identity
+import qualified Data.HashMap.Strict       as M
+import           Data.List                 (find, sortBy)
+import           Data.Maybe                (fromMaybe, isJust, isNothing,
+                                            mapMaybe)
 import           Data.Ord                  (comparing)
 import           Data.Ranged.Ranges        (emptyRange)
-import qualified Data.HashMap.Strict as M
-import Data.String.Conversions (cs)
-import Data.CaseInsensitive (original)
-import Data.List (sortBy, find)
-import Data.Functor.Identity
 import qualified Data.Set                  as S
-import qualified Data.ByteString.Lazy as BL
+import           Data.String.Conversions   (cs)
-import qualified Data.ByteString.Char8 as BS
+import           Data.Text                 (Text, pack)
-import qualified Blaze.ByteString.Builder as BB
+import           Text.Regex.TDFA           ((=~))
-import qualified Data.Csv as CSV
 
-import Network.HTTP.Types.Status
-import Network.HTTP.Types.Header
-import Network.HTTP.Types.URI (parseSimpleQuery)
 import           Network.HTTP.Base         (urlEncodeVars)
+import           Network.HTTP.Types.Header
+import           Network.HTTP.Types.Status
+import           Network.HTTP.Types.URI    (parseSimpleQuery)
 import           Network.Wai
-import Network.Wai.Parse (parseHttpAccept)
 import           Network.Wai.Internal      (Response (..))
+import           Network.Wai.Parse         (parseHttpAccept)
 
 import           Data.Aeson
 import           Data.Monoid
@@ -45,14 +47,14 @@ import qualified Hasql as H
 import qualified Hasql.Backend             as B
 import qualified Hasql.Postgres            as P
 
-import PostgREST.Types
-import PostgREST.Config (AppConfig(..))
 import           PostgREST.Auth
-import PostgREST.PgQuery
+import           PostgREST.Config          (AppConfig (..))
-import PostgREST.RangeQuery
-import PostgREST.PgStructure
 import           PostgREST.Parsers
+import           PostgREST.PgQuery
+import           PostgREST.PgStructure
 import           PostgREST.QueryBuilder
+import           PostgREST.RangeQuery
+import           PostgREST.Types
 
 import           Prelude