src/Cardinal.hs: make an import list explicit.

diff --git a/src/Cardinal.hs b/src/Cardinal.hs
index d4f94e3c55e530de9008e7fbc276c9a4062f332b..530ea1acbf5e94014bda8b59f04f9a2e382cf2fd 100644 (file)
--- a/src/Cardinal.hs
+++ b/src/Cardinal.hs
@@ -27,7 +27,7 @@ import Prelude hiding (LT)
 import Test.Tasty ( TestTree, testGroup )
 import Test.Tasty.HUnit ( Assertion, assertEqual, testCase )
 import Test.Tasty.QuickCheck (
-  Arbitrary(..),
+  Arbitrary( arbitrary ),
   Property, (==>),
   oneof,
   testProperty )