diff --git a/install/src/Env.hs b/install/src/Env.hs
index 397b9108f6..5dc77e1dfb 100644
--- a/install/src/Env.hs
+++ b/install/src/Env.hs
@@ -18,8 +18,8 @@ import           Data.Function                            ( (&)
 import           Data.List                                ( sort
                                                           , sortBy
                                                           , isInfixOf
-                                                          , nubBy
                                                           )
+import           Data.List.Extra                          ( nubOrdBy )
 import           Data.Ord                                 ( comparing )
 import           Control.Monad.Extra                      ( mapMaybeM )
 
diff --git a/install/src/Print.hs b/install/src/Print.hs
index b4937f4a32..b81a92a6c4 100644
--- a/install/src/Print.hs
+++ b/install/src/Print.hs
@@ -2,8 +2,8 @@ module Print where
 
 import           Development.Shake
 import           Control.Monad.IO.Class
-import           Data.List                                ( dropWhileEnd
-                                                          )
+import           Data.List                                ( dropWhileEnd )
+import           Data.List.Extra                          ( trimStart, trimEnd )
 import           Data.Char                                ( isSpace )
 
 -- | lift putStrLn to MonadIO