diff --git a/app/Main.hs b/app/Main.hs
index 4f7cc8a..1787262 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -11,9 +11,9 @@ import Control.Monad.Trans.Resource (runResourceT)
 import Data.ByteString.Lazy as BS
 import Data.List as List
 import Data.Text as T
-import Data.Time.Clock.POSIX (posixSecondsToUTCTime, utcTimeToPOSIXSeconds)
 import Data.Time.Clock (nominalDiffTimeToSeconds)
-import Database.Persist.Postgresql (ConnectionPool, ConnectionString, SqlBackend, runMigration, runSqlPool, getPgInterval, withPostgresqlPool)
+import Data.Time.Clock.POSIX (posixSecondsToUTCTime, utcTimeToPOSIXSeconds)
+import Database.Persist.Postgresql (ConnectionPool, ConnectionString, SqlBackend, getPgInterval, runMigration, runSqlPool, withPostgresqlPool)
 import Debug.Trace (traceShow)
 import Session
 import Store
@@ -58,8 +58,8 @@ instance YesodPersist Souplesse where
 
 getCalendarR :: Handler Html
 getCalendarR = do
-  let fTime =  T.pack . show . floor . utcTimeToPOSIXSeconds
-      fDur = T.pack . show  . ceiling . nominalDiffTimeToSeconds . getPgInterval
+  let fTime = T.pack . show . floor . utcTimeToPOSIXSeconds
+      fDur = T.pack . show . ceiling . nominalDiffTimeToSeconds . getPgInterval
   (formWidget, _) <- generateFormPost uploadForm
   sessions' <- runDB Session.recents
   defaultLayout
diff --git a/lib/Point.hs b/lib/Point.hs
index e573b8f..39e6488 100644
--- a/lib/Point.hs
+++ b/lib/Point.hs
@@ -19,12 +19,12 @@ import Data.Maybe
 import Data.Text qualified
 import Data.Text.Lazy as T
 import Data.Time
+import Data.Time.Clock.POSIX (posixSecondsToUTCTime, utcTimeToPOSIXSeconds)
 import Data.Time.ISO8601 qualified
 import Debug.Trace (trace, traceShow)
 import Text.Read (readMaybe)
 import Text.XML
 import Text.XML.Cursor as Cursor
-import Data.Time.Clock.POSIX (posixSecondsToUTCTime, utcTimeToPOSIXSeconds)
 
 data Pos = Pos Double Double (Maybe Double) deriving (Show, Eq)
 
diff --git a/lib/Session.hs b/lib/Session.hs
index 1860307..2cfaa75 100644
--- a/lib/Session.hs
+++ b/lib/Session.hs
@@ -14,28 +14,26 @@
 {-# LANGUAGE UndecidableInstances #-}
 
 module Session
-  ( Session(..)
-  , recents
-  , updateSessions
-  , migrateSession
-  ) where
-
-import Data.Text
-import Text.RawString.QQ (r)
-import Data.Time.Clock (
-  UTCTime,
+  ( Session (..),
+    recents,
+    updateSessions,
+    migrateSession,
   )
+where
 
-import Database.Persist
--- import Database.Persist.Class
-import Database.Persist.TH
-import Database.Persist.Postgresql
-  ( SqlBackend,
-    PgInterval
-  )
 import Control.Monad.IO.Class (MonadIO)
 import Control.Monad.Trans.Reader (ReaderT)
-
+import Data.Text
+import Data.Time.Clock
+  ( UTCTime,
+  )
+import Database.Persist
+import Database.Persist.Postgresql
+  ( PgInterval,
+    SqlBackend,
+  )
+import Database.Persist.TH
+import Text.RawString.QQ (r)
 
 share
   [mkPersist sqlSettings, mkMigrate "migrateSession"]
@@ -48,7 +46,8 @@ Session
 |]
 
 updateSessions :: Text
-updateSessions = [r|
+updateSessions =
+  [r|
 -- delete existing drafts as new data may extend one of them
 delete from session where draft;
 -- find all potential start points in the new data
@@ -63,7 +62,7 @@ insert into session(start_time, duration, draft) (select time as start_time, mak
 where draft;
 |]
 
-recents :: (MonadIO m) =>  ReaderT SqlBackend m [Session]
+recents :: (MonadIO m) => ReaderT SqlBackend m [Session]
 recents = do
   s <- selectList [SessionDraft !=. True] [Desc SessionStartTime, LimitTo 10]
   return $ Prelude.map (\(Entity _ x) -> x) s
diff --git a/lib/Track.hs b/lib/Track.hs
index 8a60fd5..a0842fc 100644
--- a/lib/Track.hs
+++ b/lib/Track.hs
@@ -27,10 +27,10 @@ import Data.Text.Lazy as T
 import Data.Time
 import Data.Time.ISO8601 qualified
 import Debug.Trace (trace, traceShow)
+import Point
 import Text.Read (readMaybe)
 import Text.XML
 import Text.XML.Cursor as Cursor
-import Point
 
 -- TODO do we even need this type?
 type Track = [Point]