use template haskell aeson, not generics

this has been bothering me for MONTHS, and it compiles faster now. also fixed some warnings

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/Dirgraph.hs b/lib/Dirgraph.hs
index 3fe1ce6..57852d0 100644
--- a/lib/Dirgraph.hs
+++ b/lib/Dirgraph.hs
@@ -8,7 +8,7 @@ module Dirgraph where
 import           Universum
 
 import           CheckMap        (MapResult (mapresultDepends))
-import           Data.Map.Strict (mapMaybeWithKey, mapWithKey, traverseWithKey)
+import           Data.Map.Strict (mapMaybeWithKey, mapWithKey)
 import qualified Data.Map.Strict as M
 import           Data.Set        ((\\))
 import qualified Data.Set        as S