4 files changed, 19 insertions, 20 deletions

diff --git a/packages/base/hmatrix.cabal b/packages/base/hmatrix.cabal
index 5524d2b..aba6fa7 100644
--- a/packages/base/hmatrix.cabal
+++ b/packages/base/hmatrix.cabal
@@ -16,7 +16,7 @@ Description:        Linear systems, matrix decompositions, and other numerical c
                     Code examples: <http://dis.um.es/~alberto/hmatrix/hmatrix.html>
 
 Category:           Math
-tested-with:        GHC==7.10
+tested-with:        GHC==8.0
 
 cabal-version:      >=1.8
 
diff --git a/packages/base/src/Internal/Matrix.hs b/packages/base/src/Internal/Matrix.hs
index 3082e8d..6efbe5f 100644
--- a/packages/base/src/Internal/Matrix.hs
+++ b/packages/base/src/Internal/Matrix.hs
@@ -5,8 +5,7 @@
 {-# LANGUAGE TypeOperators            #-}
 {-# LANGUAGE TypeFamilies             #-}
 {-# LANGUAGE ViewPatterns             #-}
-
-
+{-# LANGUAGE ConstrainedClassMethods  #-}
 
 -- |
 -- Module      :  Internal.Matrix
diff --git a/packages/base/src/Internal/Modular.hs b/packages/base/src/Internal/Modular.hs
index 239c742..f3c59a8 100644
--- a/packages/base/src/Internal/Modular.hs
+++ b/packages/base/src/Internal/Modular.hs
@@ -72,7 +72,7 @@ instance (Ord t, KnownNat m) => Ord (Mod m t)
   where
     compare a b = compare (unMod a) (unMod b)
 
-instance (Real t, KnownNat m, Integral (Mod m t)) => Real (Mod m t)
+instance (Integral t, Real t, KnownNat m, Integral (Mod m t)) => Real (Mod m t)
   where
     toRational x = toInteger x % 1
 
@@ -114,7 +114,7 @@ instance Show t => Show (Mod n t)
   where
     show = show . unMod
 
-instance forall n t . (Integral t, KnownNat n) => Num (Mod n t)
+instance (Integral t, KnownNat n) => Num (Mod n t)
   where
     (+) = l2 (\m a b -> (a + b) `mod` (fromIntegral m))
     (*) = l2 (\m a b -> (a * b) `mod` (fromIntegral m))
@@ -159,11 +159,11 @@ instance KnownNat m => Element (Mod m Z)
         m' = fromIntegral . natVal $ (undefined :: Proxy m)
 
 
-instance forall m . KnownNat m => CTrans (Mod m I)
-instance forall m . KnownNat m => CTrans (Mod m Z)
+instance KnownNat m => CTrans (Mod m I)
+instance KnownNat m => CTrans (Mod m Z)
 
 
-instance forall m . KnownNat m => Container Vector (Mod m I)
+instance KnownNat m => Container Vector (Mod m I)
   where
     conj' = id
     size' = dim
@@ -203,7 +203,7 @@ instance forall m . KnownNat m => Container Vector (Mod m I)
     fromZ'   = vmod . fromZ'
     toZ'     = toZ' . f2i
 
-instance forall m . KnownNat m => Container Vector (Mod m Z)
+instance KnownNat m => Container Vector (Mod m Z)
   where
     conj' = id
     size' = dim
@@ -311,7 +311,7 @@ lift2 f a b = vmod (f (f2i a) (f2i b))
 
 lift2m f a b = liftMatrix vmod (f (f2iM a) (f2iM b))
 
-instance forall m . KnownNat m => Num (Vector (Mod m I))
+instance KnownNat m => Num (Vector (Mod m I))
   where
     (+) = lift2 (+)
     (*) = lift2 (*)
@@ -321,7 +321,7 @@ instance forall m . KnownNat m => Num (Vector (Mod m I))
     negate = lift1 negate
     fromInteger x = fromInt (fromInteger x)
 
-instance forall m . KnownNat m => Num (Vector (Mod m Z))
+instance KnownNat m => Num (Vector (Mod m Z))
   where
     (+) = lift2 (+)
     (*) = lift2 (*)
diff --git a/packages/base/src/Internal/Static.hs b/packages/base/src/Internal/Static.hs
index 61be456..2c31097 100644
--- a/packages/base/src/Internal/Static.hs
+++ b/packages/base/src/Internal/Static.hs
@@ -191,7 +191,7 @@ singleV v = LA.size v == 1
 singleM m = rows m == 1 && cols m == 1
 
 
-instance forall n. KnownNat n => Sized ℂ (C n) Vector
+instance KnownNat n => Sized ℂ (C n) Vector
   where
     size _ = fromIntegral . natVal $ (undefined :: Proxy n)
     konst x = mkC (LA.scalar x)
@@ -207,7 +207,7 @@ instance forall n. KnownNat n => Sized ℂ (C n) Vector
         r = mkC v :: C n
 
 
-instance forall n. KnownNat n => Sized ℝ (R n) Vector
+instance KnownNat n => Sized ℝ (R n) Vector
   where
     size _ = fromIntegral . natVal $ (undefined :: Proxy n)
     konst x = mkR (LA.scalar x)
@@ -224,7 +224,7 @@ instance forall n. KnownNat n => Sized ℝ (R n) Vector
 
 
 
-instance forall m n . (KnownNat m, KnownNat n) => Sized ℝ (L m n) Matrix
+instance (KnownNat m, KnownNat n) => Sized ℝ (L m n) Matrix
   where
     size _ = ((fromIntegral . natVal) (undefined :: Proxy m)
              ,(fromIntegral . natVal) (undefined :: Proxy n))
@@ -242,7 +242,7 @@ instance forall m n . (KnownNat m, KnownNat n) => Sized ℝ (L m n) Matrix
         r = mkL x :: L m n
 
 
-instance forall m n . (KnownNat m, KnownNat n) => Sized ℂ (M m n) Matrix
+instance (KnownNat m, KnownNat n) => Sized ℂ (M m n) Matrix
   where
     size _ = ((fromIntegral . natVal) (undefined :: Proxy m)
              ,(fromIntegral . natVal) (undefined :: Proxy n))
@@ -300,7 +300,7 @@ isDiagg (Dim (Dim x))
 
 --------------------------------------------------------------------------------
 
-instance forall n . KnownNat n => Show (R n)
+instance KnownNat n => Show (R n)
   where
     show s@(R (Dim v))
       | singleV v = "("++show (v!0)++" :: R "++show d++")"
@@ -308,7 +308,7 @@ instance forall n . KnownNat n => Show (R n)
       where
         d = size s
 
-instance forall n . KnownNat n => Show (C n)
+instance KnownNat n => Show (C n)
   where
     show s@(C (Dim v))
       | singleV v = "("++show (v!0)++" :: C "++show d++")"
@@ -316,7 +316,7 @@ instance forall n . KnownNat n => Show (C n)
       where
         d = size s
 
-instance forall m n . (KnownNat m, KnownNat n) => Show (L m n)
+instance (KnownNat m, KnownNat n) => Show (L m n)
   where
     show (isDiag -> Just (z,y,(m',n'))) = printf "(diag %s %s :: L %d %d)" (show z) (drop 9 $ show y) m' n'
     show s@(L (Dim (Dim x)))
@@ -325,7 +325,7 @@ instance forall m n . (KnownNat m, KnownNat n) => Show (L m n)
       where
         (m',n') = size s
 
-instance forall m n . (KnownNat m, KnownNat n) => Show (M m n)
+instance (KnownNat m, KnownNat n) => Show (M m n)
   where
     show (isDiagC -> Just (z,y,(m',n'))) = printf "(diag %s %s :: M %d %d)" (show z) (drop 9 $ show y) m' n'
     show s@(M (Dim (Dim x)))
@@ -336,7 +336,7 @@ instance forall m n . (KnownNat m, KnownNat n) => Show (M m n)
 
 --------------------------------------------------------------------------------
 
-instance forall n t . (Num (Vector t), Numeric t )=> Num (Dim n (Vector t))
+instance (Num (Vector t), Numeric t )=> Num (Dim n (Vector t))
   where
     (+) = lift2F (+)
     (*) = lift2F (*)