diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,7 @@
 # Changelog for gray-extended
 
+1.5.7 Simplified nix configuration.
+
 1.5.6 Corrected copyright info.
 
 1.5.5 Revamped to work with Nix + cabal-install
diff --git a/gray-extended.cabal b/gray-extended.cabal
--- a/gray-extended.cabal
+++ b/gray-extended.cabal
@@ -1,7 +1,5 @@
-cabal-version: 1.13
-
 name:           gray-extended
-version:        1.5.6
+version:        1.5.7
 synopsis:       Gray encoding schemes
 description:    Please see the README on GitHub at <https://github.com/mhwombat/gray-extended#readme>
 category:       Math
@@ -16,6 +14,7 @@
 extra-source-files:
     README.md
     ChangeLog.md
+cabal-version: 1.13
 
 source-repository head
   type: git
diff --git a/src/Codec/Gray.hs b/src/Codec/Gray.hs
--- a/src/Codec/Gray.hs
+++ b/src/Codec/Gray.hs
@@ -25,6 +25,7 @@
 import Data.List (foldl')
 import Data.Bits (Bits, shiftR, xor)
 
+{-# INLINABLE grayCodes #-}
 -- | @'grayCodes' k@ generates the list of Binary Reflected Gray Code
 --   (BRGC) numbers of length k. This code is cyclic.
 grayCodes :: Int -> [[Bool]]
@@ -32,12 +33,14 @@
 grayCodes k = 
   let xs = grayCodes (k-1) in map (False:) xs ++ map (True:) (reverse xs)
 
+{-# INLINABLE integralToGray #-}
 -- | @'integralToGray' n@ encodes @n@ using a BRGC, and returns the
 --   resulting bits as an integer. For example, encoding @17@ in BRGC
 --   results in @11001@, or 25. So @integralToGray 17@ returns @25@.
 integralToGray :: Bits a => a -> a
 integralToGray n = (n `shiftR` 1) `xor` n
 
+{-# INLINABLE grayToIntegral #-}
 -- | @'grayToIntegral' n@ decodes @n@ using a BRGC, and returns the
 --   resulting integer. For example, 25 is @11001@, which is the code
 --   for 17. So @grayToIntegral 25@ returns @17@.
@@ -46,6 +49,7 @@
   where f k m | m /= 0     = f (k `xor` m) (m `shiftR` 1)
               | otherwise = k
   
+{-# INLINABLE naryGrayCodes #-}
 -- | @'naryGrayCodes' xs k@ generates a non-Boolean (or n-ary) Gray code
 --   of length @k@ using the elements of @xs@ as \"digits\". This code
 --   is cyclic.