diff --git a/pkgs/development/libraries/haskell/monadloc/default.nix b/pkgs/development/libraries/haskell/monadloc/default.nix
new file mode 100644
index 000000000000..9ff7383565e1
--- /dev/null
+++ b/pkgs/development/libraries/haskell/monadloc/default.nix
@@ -0,0 +1,14 @@
+{ cabal, transformers }:
+
+cabal.mkDerivation (self: {
+  pname = "monadloc";
+  version = "0.7.1";
+  sha256 = "1a773nysrsj61ka7bdacb0i7dxlgb1fjz3x5w9c1w1dv7rmhynmj";
+  buildDepends = [ transformers ];
+  meta = {
+    homepage = "http://github.com/pepeiborra/monadloc";
+    description = "A class for monads which can keep a monadic call trace";
+    license = self.stdenv.lib.licenses.publicDomain;
+    platforms = self.ghc.meta.platforms;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index fe449dad45c0..c62dfbec6a22 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1720,6 +1720,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   monadcryptorandom = callPackage ../development/libraries/haskell/monadcryptorandom {};
 
+  monadloc = callPackage ../development/libraries/haskell/monadloc {};
+
   monadLoops = callPackage ../development/libraries/haskell/monad-loops {};
 
   monadLogger = callPackage ../development/libraries/haskell/monad-logger {};