Remove definition of shouldParse (it's in hspec-attoparsec), and dependency on hspec-expectations.

taggy.cabal

@@ -68,7 +68,7 @@ test-suite spec
       base    == 4.*
     , text
     , hspec
-    , hspec-expectations
+    , hspec-attoparsec
     , vector
     , attoparsec
     , unordered-containers

tests/Text/Taggy/ParserSpec.hs

@@ -2,10 +2,10 @@
 
 module Text.Taggy.ParserSpec where
 
-import Control.Monad
 import Data.Attoparsec.Text.Lazy
 import Data.Text.Lazy
 import Test.Hspec
+import Test.Hspec.Attoparsec (shouldParse)
 import Text.Taggy.Parser
 import Text.Taggy.Types
 
@@ -101,17 +101,3 @@ spec = do
 
 (~>) :: Text -> Parser a -> Either String a
 t ~> p = eitherResult $ parse p t
-
-shouldParse :: (Eq a, Show a) => Either String a -> a -> Expectation
-res `shouldParse` expectedVal =
-  either (expectationFailure . errmsg)
-         checkEquality
-         res
-
-  where errmsg err = "  expected: " ++ show expectedVal
-                  ++ "\n  but parse failed with error: " ++ err
-
-        checkEquality parsedVal =
-          when (parsedVal /= expectedVal) $
-            expectationFailure $ "  expected: " ++ show expectedVal
-                              ++ "\n  but got: " ++ show parsedVal