Remove dependency on cryptonite and memory (#843)

hakyll.cabal

@@ -175,14 +175,13 @@ Library
     blaze-markup         >= 0.5.1    && < 0.9,
     bytestring           >= 0.9      && < 0.11,
     containers           >= 0.3      && < 0.7,
-    cryptonite           >= 0.25     && < 0.29,
     data-default         >= 0.4      && < 0.8,
     deepseq              >= 1.3      && < 1.5,
     directory            >= 1.2.7.0  && < 1.4,
     file-embed           >= 0.0.10.1 && < 0.0.14,
     filepath             >= 1.0      && < 1.5,
+    hashable             >= 1.0      && < 2,
     lrucache             >= 1.1.1    && < 1.3,
-    memory               >= 0.14.18  && < 0.16,
     mtl                  >= 1        && < 2.3,
     network-uri          >= 2.6      && < 2.7,
     optparse-applicative >= 0.12     && < 0.17,

lib/Hakyll/Core/Store.hs

@@ -16,20 +16,14 @@ module Hakyll.Core.Store
 
 
 --------------------------------------------------------------------------------
-import qualified Data.ByteArray       as BA
-import qualified Crypto.Hash          as CH
+import qualified Data.Hashable        as DH
 import           Data.Binary          (Binary, decode, encodeFile)
-import qualified Data.ByteString      as B
 import qualified Data.ByteString.Lazy as BL
 import qualified Data.Cache.LRU.IO    as Lru
 import           Data.List            (intercalate)
 import           Data.Maybe           (isJust)
-import qualified Data.Text            as T
-import qualified Data.Text.Encoding   as T
 import           Data.Typeable        (TypeRep, Typeable, cast, typeOf)
-import           Numeric              (showHex)
-import           System.Directory     (createDirectoryIfMissing)
-import           System.Directory     (doesFileExist, removeFile)
+import           System.Directory     (createDirectoryIfMissing, doesFileExist, removeFile)
 import           System.FilePath      ((</>))
 import           System.IO            (IOMode (..), hClose, openFile)
 import           System.IO.Error      (catchIOError, ioeSetFileName,
@@ -194,21 +188,4 @@ deleteFile = (`catchIOError` \_ -> return ()) . removeFile
 --------------------------------------------------------------------------------
 -- | Mostly meant for internal usage
 hash :: [String] -> String
-hash = toHex . B.unpack . hashMD5 . T.encodeUtf8 . T.pack . intercalate "/"
-  where
-    toHex [] = ""
-    toHex (x : xs) | x < 16 = '0' : showHex x (toHex xs)
-                   | otherwise = showHex x (toHex xs)
-
-
---------------------------------------------------------------------------------
--- | Hash by MD5
-hashMD5 :: B.ByteString -> B.ByteString
-hashMD5 x =
-  let
-    digest :: CH.Digest CH.MD5
-    digest = CH.hash x
-    bytes :: B.ByteString
-    bytes = BA.convert digest
-  in
-    bytes
+hash = show . DH.hash . intercalate "/"

test.hs

@@ -1,9 +1,9 @@
 {-# LANGUAGE BangPatterns #-}
 import           Control.Monad          (forM)
-import qualified Crypto.Hash.SHA256     as SHA256
 import qualified Data.ByteString.Base16 as Base16
 import qualified Data.ByteString.Char8  as BS8
 import qualified Data.ByteString.Lazy   as BSL
+import qualified Data.Hashable          as DH
 import           Data.Map               (Map)
 import qualified Data.Map               as Map
 import           Hakyll
@@ -20,9 +20,7 @@ mkFileHashes dir = do
         return (fromFilePath path1, h)
   where
     hash :: FilePath -> IO String
-    hash fp = do
-        !h <- SHA256.hashlazy <$> BSL.readFile fp
-        return $! BS8.unpack $! Base16.encode h
+    hash fp = (show . DH.hash) <$> BSL.readFile fp
 
 main :: IO ()
 main = hakyll $ do