diff --git a/Data/ZoomCache/Codec.hs b/Data/ZoomCache/Codec.hs
--- a/Data/ZoomCache/Codec.hs
+++ b/Data/ZoomCache/Codec.hs
@@ -22,7 +22,6 @@
 module Data.ZoomCache.Codec (
     -- * Required interfaces
       ZoomReadable(..)
-    , SummaryData()
     , ZoomWritable(..)
     , ZoomWrite(..)
 
diff --git a/Data/ZoomCache/Dump.hs b/Data/ZoomCache/Dump.hs
--- a/Data/ZoomCache/Dump.hs
+++ b/Data/ZoomCache/Dump.hs
@@ -24,7 +24,6 @@
 ) where
 
 import Control.Applicative ((<$>))
-import Data.Int
 import qualified Data.IntMap as IM
 import qualified Data.Iteratee as I
 import qualified Data.Iteratee.IO.OffsetFd as OffI
diff --git a/Data/ZoomCache/Multichannel/List.hs b/Data/ZoomCache/Multichannel/List.hs
--- a/Data/ZoomCache/Multichannel/List.hs
+++ b/Data/ZoomCache/Multichannel/List.hs
@@ -22,8 +22,8 @@
 ----------------------------------------------------------------------
 
 module Data.ZoomCache.Multichannel.List (
-      SummaryData(..)
-    , SummaryWork(..)
+      SummaryData()
+    , SummaryWork()
 
     , wholeTrackSummaryListDouble
     , enumListDouble
diff --git a/Data/ZoomCache/NList.hs b/Data/ZoomCache/NList.hs
--- a/Data/ZoomCache/NList.hs
+++ b/Data/ZoomCache/NList.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# OPTIONS_GHC -Wall #-}
@@ -34,7 +35,11 @@
     (NList _ a1) == (NList _ a2) = a1 == a2
 
 instance Typeable a => Typeable (NList n a) where
+#if __GLASGOW_HASKELL__ >= 702
     typeOf _ = mkTyConApp (mkTyCon3 "zoom-cache" "Data.ZoomCache.NList" "NList") [typeOf (undefined :: a)]
+#else
+    typeOf _ = mkTyConApp (mkTyCon "Data.ZoomCache.NList") [typeOf (undefined :: a)]
+#endif
 
 instance (Nat n, Arbitrary a) => Arbitrary (NList n a) where
     arbitrary = NList unify <$> sequence [ arbitrary | _ <- [1..(toInt unify)] ]
diff --git a/Data/ZoomCache/Numeric.hs b/Data/ZoomCache/Numeric.hs
--- a/Data/ZoomCache/Numeric.hs
+++ b/Data/ZoomCache/Numeric.hs
@@ -48,7 +48,6 @@
 import Data.Offset
 import Data.ZoomCache
 import Data.ZoomCache.Numeric.Types
-import Data.ZoomCache.Types
 
 ----------------------------------------------------------------------
 
diff --git a/Data/ZoomCache/Numeric/IEEE754.hs b/Data/ZoomCache/Numeric/IEEE754.hs
--- a/Data/ZoomCache/Numeric/IEEE754.hs
+++ b/Data/ZoomCache/Numeric/IEEE754.hs
@@ -83,9 +83,12 @@
     , SummaryWork(..)
 )where
 
+#if __GLASGOW_HASKELL__ >= 702
 import Blaze.ByteString.Builder
 import Data.ByteString (ByteString)
 import Data.Iteratee (Iteratee)
+#endif
+
 import Text.Printf
 
 import Data.ZoomCache.Codec
diff --git a/Data/ZoomCache/Numeric/Int.hs b/Data/ZoomCache/Numeric/Int.hs
--- a/Data/ZoomCache/Numeric/Int.hs
+++ b/Data/ZoomCache/Numeric/Int.hs
@@ -173,11 +173,14 @@
     , SummaryWork(..)
 )where
 
+#if __GLASGOW_HASKELL__ >= 702
+import Data.ByteString (ByteString)
+import Data.Iteratee (Iteratee)
+#endif
+
 import Blaze.ByteString.Builder
 import Control.Applicative ((<$>))
-import Data.ByteString (ByteString)
 import Data.Int
-import Data.Iteratee (Iteratee)
 import Data.Maybe (fromMaybe)
 import Text.Printf
 
diff --git a/Data/ZoomCache/Numeric/Word.hs b/Data/ZoomCache/Numeric/Word.hs
--- a/Data/ZoomCache/Numeric/Word.hs
+++ b/Data/ZoomCache/Numeric/Word.hs
@@ -144,10 +144,13 @@
     , SummaryWork(..)
 )where
 
-import Blaze.ByteString.Builder
-import Control.Applicative ((<$>))
+#if __GLASGOW_HASKELL__ >= 702
 import Data.ByteString (ByteString)
 import Data.Iteratee (Iteratee)
+#endif
+
+import Blaze.ByteString.Builder
+import Control.Applicative ((<$>))
 import Data.Word
 import Text.Printf
 
diff --git a/Data/ZoomCache/Types.hs b/Data/ZoomCache/Types.hs
--- a/Data/ZoomCache/Types.hs
+++ b/Data/ZoomCache/Types.hs
@@ -60,7 +60,6 @@
 
     , PacketSO(..)
     , SummarySO(..)
-    , SummaryData()
 
     , summarySODuration
 
@@ -74,7 +73,6 @@
 import Blaze.ByteString.Builder
 import Data.ByteString (ByteString)
 import Data.Dynamic
-import Data.Int
 import Data.IntMap (IntMap)
 import qualified Data.IntMap as IM
 import Data.Iteratee (Iteratee)
diff --git a/zoom-cache.cabal b/zoom-cache.cabal
--- a/zoom-cache.cabal
+++ b/zoom-cache.cabal
@@ -3,7 +3,7 @@
 -- The package version. See the Haskell package versioning policy
 -- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
 -- standards guiding when and how versions should be incremented.
-Version:             1.2.0.0
+Version:             1.2.1.0
 
 Synopsis:            A streamable, seekable, zoomable cache file format
 
@@ -15,9 +15,11 @@
     to move around and to zoom in and out.
     .
     This library provides a monadic writing and an iteratee reading interface
-    for zoom-cache files.
+    for zoom-cache files. To build GUI applications, see the scope package:
     .
-    What's neat about this format and library? Glad you asked!
+    <http://hackage.haskell.org/package/scope>
+    .
+    What's neat about the zoom-cache format and library? Glad you asked!
     .
         * Data can be stored at variable or constant rates. For variable rate
     data, a timestamp is explicitly written into the file for every value,