add missing dependencies

cryptoids.cabal

@@ -35,8 +35,12 @@ library
     , binary >=0.8.9 && <0.9
     , bytestring >=0.12 && <1
     , crypton >=1.0.4 && <2
+    , deepseq >=1.5.1 && <2
     , directory >=1.3.8.5 && <2
     , exceptions >=0.10.7 && <0.11
-    , filepath >=1.4.301 && <1.5
+    , filepath >=1.4.301 && <2
+    , hashable >=1.4.7 && <2
+    , http-api-data >=0.6.2 && <0.7
     , memory >=0.18 && <0.19
+    , path-pieces >=0.2.1 && <0.3
   default-language: Haskell2010

src/Data/CryptoID.hs

@@ -1,3 +1,5 @@
+-- TODO: avoid dependencies on aeson, http-api-data, path-pieces, and maybe deepseq
+
 module Data.CryptoID
   ( CryptoID(..)
   ) where