Build and test on GHC 8.2

Two doctests still fail

Author: christiaanb

clash-prelude.cabal

@@ -179,14 +179,14 @@ Library
                       deepseq                   >= 1.4.1.0 && < 1.5,
                       ghc-prim                  >= 0.3.1.0 && < 0.6,
                       ghc-typelits-extra        >= 0.2.1   && < 0.3,
-                      ghc-typelits-knownnat     >= 0.2.2   && < 0.3,
+                      ghc-typelits-knownnat     >= 0.2.2   && < 0.4,
                       ghc-typelits-natnormalise >= 0.4.2   && < 0.6,
                       half                      >= 0.2.2.3 && < 1.0,
                       lens                      >= 4.9     && < 4.16,
                       QuickCheck                >= 2.7     && < 2.10,
                       reflection                >= 2       && < 2.2,
                       singletons                >= 1.0     && < 3.0,
-                      template-haskell          >= 2.9.0.0 && < 2.12,
+                      template-haskell          >= 2.9.0.0 && < 2.13,
                       vector                    >= 0.11    && < 1.0
 
   if flag(doclinks)
@@ -222,7 +222,7 @@ benchmark benchmark-clash-prelude
       clash-prelude,
       criterion         >= 1.1.1.0 && < 1.2,
       deepseq           >= 1.4.0.1 && < 1.5,
-      template-haskell  >= 2.9.0.0 && < 2.12
+      template-haskell  >= 2.9.0.0 && < 2.13
 
   Other-Modules:    BenchBitVector
                     BenchFixed

src/CLaSH/Signal/Bundle.hs

@@ -84,7 +84,8 @@ class Bundle a where
   bundle :: Unbundled' clk a -> Signal' clk a
 
   {-# INLINE bundle #-}
-  default bundle :: Signal' clk a -> Signal' clk a
+  default bundle :: (Signal' clk a ~ Unbundled' clk a)
+                 => Unbundled' clk a -> Signal' clk a
   bundle s = s
   -- | Example:
   --
@@ -100,7 +101,8 @@ class Bundle a where
   unbundle :: Signal' clk a -> Unbundled' clk a
 
   {-# INLINE unbundle #-}
-  default unbundle :: Signal' clk a -> Signal' clk a
+  default unbundle :: (Unbundled' clk a ~ Signal' clk a)
+                   => Signal' clk a -> Unbundled' clk a
   unbundle s = s
 
 instance Bundle Bool

tests/doctests.hs

@@ -1,6 +1,11 @@
+{-# LANGUAGE CPP #-}
 module Main where
 
 import Test.DocTest (doctest)
 
 main :: IO ()
-main = doctest ["-i src","CLaSH.Prelude","CLaSH.Examples","CLaSH.Tutorial"]
+main = doctest $
+#if __GLASGOW_HASKELL__ >= 802
+  ("-fdiagnostics-color=never":)
+#endif
+  ["-i src","CLaSH.Prelude","CLaSH.Examples","CLaSH.Tutorial"]