diff --git a/pkgs/development/libraries/haskell/mmorph/default.nix b/pkgs/development/libraries/haskell/mmorph/default.nix
new file mode 100644
index 000000000000..c4379499fad9
--- /dev/null
+++ b/pkgs/development/libraries/haskell/mmorph/default.nix
@@ -0,0 +1,13 @@
+{ cabal, transformers }:
+
+cabal.mkDerivation (self: {
+  pname = "mmorph";
+  version = "1.0.0";
+  sha256 = "10r8frcn6ar56n1vxy8rkys8j52f8xkqan8qxqanka1150k6khqk";
+  buildDepends = [ transformers ];
+  meta = {
+    description = "Monad morphisms";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 45e0b723d5ca..336fd15a0d95 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1275,6 +1275,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   mongoDB = callPackage ../development/libraries/haskell/mongoDB {};
 
+  mmorph = callPackage ../development/libraries/haskell/mmorph {};
+
   mpppc = callPackage ../development/libraries/haskell/mpppc {};
 
   mtl_1_1_0_2 = callPackage ../development/libraries/haskell/mtl/1.1.0.2.nix {};