diff --git a/pkgs/development/libraries/haskell/ex-pool/default.nix b/pkgs/development/libraries/haskell/ex-pool/default.nix
new file mode 100644
index 000000000000..9bf966e749af
--- /dev/null
+++ b/pkgs/development/libraries/haskell/ex-pool/default.nix
@@ -0,0 +1,17 @@
+{ cabal, exceptions, hashable, stm, time, transformers, vector }:
+
+cabal.mkDerivation (self: {
+  pname = "ex-pool";
+  version = "0.1.0.2";
+  sha256 = "11q63yfr59r6cfzi635xj75nhcc2yi83snc75k638wyamxgvxng4";
+  buildDepends = [
+    exceptions hashable stm time transformers vector
+  ];
+  meta = {
+    homepage = "https://github.com/kim/ex-pool";
+    description = "Another fork of resource-pool, with a MonadIO and MonadCatch constraint";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.ocharles ];
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 96ac5ba1ea89..c8aa68c00fae 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -975,6 +975,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   esqueleto = callPackage ../development/libraries/haskell/esqueleto {};
 
+  exPool = callPackage ../development/libraries/haskell/ex-pool { hashable = self.hashable_1_2_1_0; };
+
   exceptionMtl = callPackage ../development/libraries/haskell/exception-mtl {};
 
   exceptionTransformers = callPackage ../development/libraries/haskell/exception-transformers {};