why

servant-quickcheck.cabal

@@ -39,7 +39,7 @@ library
                      , Servant.QuickCheck.Internal.Equality
                      , Servant.QuickCheck.Internal.ErrorTypes
   build-depends:       base >=4.8 && <4.13
-                     , base-compat-batteries >= 0.10.1 && <0.11
+                     , base-compat >= 0.9 && < 0.11
                      , aeson > 0.8 && < 2
                      , bytestring == 0.10.*
                      , case-insensitive == 1.2.*
@@ -96,7 +96,7 @@ test-suite spec
   other-modules:       Servant.QuickCheck.InternalSpec
   build-tool-depends:  hspec-discover:hspec-discover
   build-depends:       base
-                     , base-compat-batteries
+                     , base-compat
                      , aeson
                      , servant-quickcheck
                      , bytestring

src/Servant/QuickCheck/Internal/HasGenRequest.hs

@@ -15,6 +15,8 @@ import Servant.API.ContentTypes (AllMimeRender (..))
 import Servant.Client           (BaseUrl (..), Scheme (..))
 import Test.QuickCheck          (Arbitrary (..), Gen, elements, frequency)
 
+import Data.Monoid ((<>))
+
 import qualified Data.ByteString as BS
 import qualified Data.ByteString.Internal as BS (c2w)
 

src/Servant/QuickCheck/Internal/QuickCheck.hs

@@ -18,6 +18,7 @@ import           Test.QuickCheck          (Args (..),  Result (..), quickCheckWi
 import           Test.QuickCheck.Monadic  (assert, forAllM, monadicIO, monitor,
                                            run)
 import           Test.QuickCheck.Property (counterexample)
+import Data.Monoid ((<>))
 
 import Servant.QuickCheck.Internal.Equality
 import Servant.QuickCheck.Internal.ErrorTypes

stack.yaml

@@ -1,4 +1,4 @@
-resolver: nightly-2018-09-03
+resolver: lts-11.13
 packages:
 - '.'
 extra-deps: